Bongofish

Screen Tablet malarky => Build Logs => : Aerendraca January 15, 2014, 11:15:00 PM



: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca January 15, 2014, 11:15:00 PM
Well it's been a very long time since I started my last build which, as some of you might know, never did get finished for one reason or another. So here I am again with the Serenitiq 2 as promised.

This build will be using:
- Wacom Intuos 4 Large (purchased for the ridiculously low price of £100)
- The NJYTouch NJY2662 LVDS controller (includes HDMI, DVI, VGA, Audio In & out)
- The LG LP156WF4-SLB5, Low Profile (under 3.5mm including the frame!!), IPS, 15.6", 1920x1080, High Colour Gamut

Currently I have purchased the tablet and the LVDS controller and intend to order the screen next month. Hopefully the NJY2662 has been programmed correctly for the screen but if not I'll suck up the cost of a programmer and do it myself. I'm sure it'll be fine though I had a very long email conversation with Sophia at NJYTouch to make sure that it was done correctly and she assured me it'll be grand, we'll see.

So, Ill break this build log in gently with some details on what I've been up to, starting in perhaps what might seem like a strange place, how to enclose the LVDS controller.

It's easiest to do this in pictures (and more interesting too) so first off:

A prospective case for the LVDS controller - An old and no longer used digital tv box.
[attachment=1]


: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: Aerendraca January 15, 2014, 11:17:11 PM
Taking the box apart:

[attachment=1]


: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: Aerendraca January 15, 2014, 11:17:43 PM
Debranding the box:

[attachment=1]


: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: Aerendraca January 15, 2014, 11:18:17 PM
Removing the original cutouts:

[attachment=1]


: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: Aerendraca January 15, 2014, 11:22:22 PM
New backplate manufactured from a 2mmx25mm bar of aluminium:

[attachment=1]


So as you can see, amazingly the digital television box had a circuit in that was exactly the same size as the LVDS controller which meant that it would fit in the case with minimal effort. A bit of cutting here, filing there, and a great deal of graft it looks great, just needs painting now!
 


: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: Aerendraca January 17, 2014, 12:06:08 AM
Here's a little mock up of how I imagine the Serenitiq2 to look:

[attachment=1]


The contoured tft chassis will be made from birch ply possibly topped with leather. The button area is a work in progress but I would like to see some grey walnut veneer here somewhere.

I did toy with the idea of hacking the active area surface out of the I4 but it's so beautiful I can't bare to do invasive surgery hence the contoured overlay.

Once again, progress on this build will be slow and hopefully steady as I started a new job a couple of weeks ago (still settling in) and I'm hoping for a professional finish so patience is key!


: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: thatcomicsguy January 17, 2014, 12:29:00 AM
Gorgeous!

I'll be watching your build closely.  Even with my desktop model only part-way done, I'm already thumbing through ideas for a back-packable version.



: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: Aerendraca January 17, 2014, 08:15:52 AM
There's still some issues with a contoured design that I'm working out so progress on this one is likely to be slow. I just hope it will look and work as planned as I'm already getting excited about using it.


: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: Galador January 19, 2014, 01:08:01 AM
Hey there!

I will follow your progress closely as it relates to my particular predicament as well :). I would like to ask you some questions if you don't mind:

Where did you buy it and how much was the The LG LP156WF4-SLB5 ?
I'm really curious about the casing you're building. So if I were to purchase the same laptop cooler pad, I would need what? a curved sheet (does it have to be curved?) of material, and then you fix it with bolts? IT looks really uncomplicated, probably less expensive than the TabletMod files+laser cutting service, and looks good! Not a big fan of the bulky wood builds out there (no offense), due to size and mobility restrictions. Keep up the good work!


: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: Aerendraca January 19, 2014, 02:17:50 PM
I haven't actually got the LG LP156WF4-SLB5 screen yet as I'm waiting 'til I get paid, but will probably hunt for a reputable seller on ebay. Having had a bit of a look around it would seem you can get them for about £60 new. I may actually end up going with the same model with a different suffix such as the SLB7 or the SLC1, as I have read that all of the LP156WF4 models are compatible and have more or less the same specifications - with the exception of the SLB2 which was reported to be 'a bit too orange', an issue that was corrected in later suffix models.

So if I were to purchase the same laptop cooler pad, I would need what? a curved sheet (does it have to be curved?) of material, and then you fix it with bolts? IT looks really uncomplicated, probably less expensive than the TabletMod files+laser cutting service, and looks good!

Thank you for your kind words on my design, however I'm still working out exactly how to make this so I am not really in a position to offer advice on how it all fits together at this stage. I can say that the idea is to use 6 or 7 sheets of 0.8mm plywood, laser cut with a hole for the screen and some ventilation, and I will be molding them to the profile of the Intuos 4 by gluing the sheets together to form a rigid contour. Things I don't know yet are how much this is likely to cost, where I'm going to get the parts made, how I'm going to glue them together, how I intend to finish the wood, how the screen will be held in position, where the wires will go, where to place ventilation, if the screen will cause me jitter problems, erm.... there's probably more things not including those problems I'm sure I will face along the way.

I will as always present what I have done and describe issues that I embark upon, but as I have said before this project is likely to be a slow burner hopefully to be finished in the summer (if I'm lucky).

Stay tuned though, I'm sure it'll be an interesting journey.


: Re: Serenitiq 2 - Wacom Intuos 4 Large + NJY2662 LVDS + LP156WF4-SLB5
: Aerendraca January 31, 2014, 03:03:47 PM
Well I've done it, I've ordered a new screen!!! Yay!!!

Thing is I've taken a little bit of a gamble by going against my previous advice and purchasing the LP156WF4-SLB2  :o - You know the one I said had problems with the colour orange. Well I did some hunting around and I suspect that this issue was related to a specific laptop model and haven't seen this problem come up with any other laptops sporting the same panel suffix, therefore I imagine it will be ok. Additionally the SLB2 is £20 cheaper, so even if it does have a colour problem it's still cheap enough for me to test the screen for jitter issues.

Should be here on Tuesday, I'll keep you posted.


: Re: Serenitiq 2 - Wacom Intuos 4 L + NJY2662 LVDS + LP156WF4-SLB2 {Previously SLB5
: Aerendraca February 04, 2014, 01:26:23 PM
The screen is here!!!

Doh, they sent the wrong one......  >:( :( >:(  :'( :'(

They've sent the AUO B156XTN03.2 which is a nice looking and very thin TN panel with a lower resolution of 1366x768 and a gamut of 45% (sigh). Right back to the seller it goes. Dissapointing.

Notice how the LP156WF4 is absent from the compatibility list:

[attachment=1]

3.2mm thin though!!!! See here compared against a sterling 50p coin:

[attachment=2]


: Re: Serenitiq 2 - Wacom Intuos 4 L + NJY2662 LVDS + LP156WF4-SLB... {suffix TBA}
: Aerendraca February 06, 2014, 12:17:37 PM
Well it would seem that the seller of the wrongly sent screen does not have the LP156WF4-SLB2 in stock, so I have returned the screen for a full refund. I have contacted another seller to find out if they actually have the LP156WF4-SLB7 in stock before I place a new order, so until then the thread tittle shall remain "{suffix TBA}" - even though I'm fairly sure this will be SLB7.

It's looking like next week before I receive a new screen though and I just want to get on with it, argghhh, frustrating.


: Re: Serenitiq 2 - Wacom Intuos 4 L + NJY2662 LVDS + LP156WF4-SLB2 {Previously SLB5
: Aerendraca February 07, 2014, 07:37:22 PM
This is so frustrating, I've contacted a bunch of sellers on ebay asking them if the panels advertised are actually the panels that one might hope to receive. It turns out NO!! Surely there's some trading standards thing there, advertising one product but supplying 'something similar'. I mean, check out this ebay heading:

New LG Philips LP156WF4(SL)(C1) Laptop Screen 15.6" LED BACKLIT FHD Compatible

Now you might be mistaken - as I was - to assume that this is a full HD compatible LP156WF4-SLC1 for sale, but nope, turns out there should be a comma in there. By the way, the seller advised that the advert clearly said that this auction was for a screen that is compatible with the LP156WF4-SLC1 and that they don't stock the screen advertised - a point which I might add is not mentioned elsewhere in the aution advert.

I originally though this was a sneaky one-off, but WARNING TO EVERYONE, there's a whole bunch of sellers out there who are deceiving buyers discreetly. Now you might imagine that the average buyer might not care so long as their panel works in their laptop, but they should care! As most of you probably know by now, some screens are better than others and costs vastly waiver because of this, chances are these sellers are supplying cheaper inferior panels.

Another quick point before I end this rant, READ THE WHOLE AUCTION! I found one seller who didn't hint to the panel being anything but that advertised, however right at the bottom of the add in a smaller font were the words "Auction is for an LG compatible panel".

Anyway, I'm still waiting to hear from a couple more sellers, so hopefully one of them can provide what they advertise.


: Re: Serenitiq 2 - Wacom Intuos 4 L + NJY2662 LVDS + LP156WF4-SLB {tba
: Aerendraca February 10, 2014, 02:56:23 PM
I had a reply from one seller who advised that the 'Compatible' screen is the Chi Mei N156HGE-LB1.

The specs on this panel are pretty similar to the LP156WF4-SLB... Main differences are:

ChiMei is TN - LG is IPS
ChiMei has contrast ratio of 600:1 - LG is 400:1
ChiMei has response time of 3ms - LG is 35ms
ChiMei has viewing angle of 90' - LG is 160'
ChiMei (panel only) uses 6.29Watts - LG 7.00Watts
ChiMei (WLED only) uses 5.00Watts - LG 5.60Watts
ChiMei panel depth is 3.2mm - LG is 3.4mm

Both have a NTSC standard Gamut of 60%

A part of me is tempted to go for this panel based on the stats above, however, my one gripe with this panel is it's poor viewing angle of 90' (left to right through the surface normal). For me this is a deal breaker and the sort of thing that I can imagine bugging me. This viewing angle is the resultant function of the panel being TN based and very thin. My heart's not into this panel at all, but something tells me I might not have any other options as it seems impossible to get hold of the LG LP156WF4 (any suffix) anywhere.

My last resort search is via some Chinese companies on Alibaba, of which I am waiting to hear back from a couple of them. Being 8 hours ahead and with the obvious language barrier, the email conversations seem to take days to complete so patience is a virtue here.

I did have a quick search on the forum to see if anyone had tried the ChiMei screen, but zero returns suggests nobody has, shame.


: Re: Serenitiq 2 - Wacom Intuos 4 L + NJY2662 LVDS + LP156WF4-SLB {tba
: Aerendraca February 20, 2014, 11:33:05 PM
It's been a couple of weeks since I last posted on my thread, so time for a progress report.

Still not decided on a screen for this project yet but it looks like the LP156WF4-SLB* is off the cards as they're non existent - even in China apparently - so I'm currently rethinking this and possibly looking at going for an LP154WF* 15.4" panel now but this means I'm going to need a programmer from NJY so that I can use it, not sure about this yet and definitely need to give it more thought.

However, I have received the Cooler Master U3 stand and some other bits and pieces for later in the build, but for now here's some photos of the stand with the tablet and boxed LVDS controller (semi attached with double sided tape mock-up style):

[attachment=1]

[attachment=2]

I'm pleased to say that so far my CAD skills are representing actual world realities - looking good I think. Also, I really recommend the U3 laptop stand for a slight incline on the tablet (about 8degrees), makes for a better feel when drawing; my opinion of course but I really do prefer it!


: Re: Serenitiq 2 - Wacom Intuos 4 L + NJY2662 LVDS + LP156WF4-SLB {tba
: thatcomicsguy February 21, 2014, 07:11:39 PM
This is looking really elegant.

Nice work!



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca February 27, 2014, 02:43:54 PM
Well I've been busy on this project in the background working on a shortcut key controller so I don't have to use the Wacom buttons on the I4 or my keyboard. Mostly this has been just tinkering with ideas and purchasing small components so I don't have anything really to report here at the moment.

I can say that the plan is to have a single large aluminium knob as the main control with a tactile switch built into the z-axis of the knob (push down), and 4 additional tactile switches inbuilt at the north,east, south, and west positions (in x and y axis). Surrounding the knob will be an array of NeoPixel LEDS to show relative position information and configuration status based on LED colour - Just waiting on the NeoPixel ring to show up. In addition to the knob I also intend to have keyboard style keys (Cherry Black switches) in easy reach of the little, ring, and middle fingers of my left hand, and all crafted lovingly from some nice wood (perhaps Oak, not sure yet).

With regards to my screen search I have been inspired by Bumhee34's beautiful build based around the Ipad3 Retina screen and decided to drop my plans for using the LP156WF4 (which I just can't find) and push the boat out and use the Macbook Pro Retina A1398 15.4" panel; Given the price of these things I'm going to need to save up for a bit first though. As I'm sure a lot of you probably already know Apple tend to make there products very difficult to take apart - with the Retina panel being no exception -  beyond this though Apple decided not to give this panel a chassis of its own at all and instead build the screen into the chassis of the Macbook lid. Essentially what this means is that you have two options with this screen: 1.Buy the complete Macbook lid/screen combo for megabucks, or 2.Buy just the TFT (ie no backlight, diffusers, light guide, no reflectors) - still quite expensive. I have opted for the second option meaning that I will need to make my own backlight setup for this panel further complicating things.

On a plus note though, at my new job there is a compound where old electronics go to die, and in said compound I discovered that someone had chucked out an Samsung LTN154AT10-T01 with a smashed beyond smashed screen on it. I picked up the screen, removed the tft and inside was an immaculate set of diffuser/reflector films and a mint light guide - Fate? I think so. It was obvious on inspection that this panel was a ccfl panel and infact (somewhat surprisingly given the state of the panel chassis) the ccfl was in one piece! The great thing about this amazing find was that the CCFL was mounted on the top edge of the panel (where the TCON circuitry resides) which by happy coincidence is exactly where the WLEDs of the Pro Retina screen also reside, Awesome!!!

The next problem was to find somewhere to get hold of the WLEDs for the Retina panel. Eventually I stumbled across a guy on ebay based in Taiwan selling Macbook Pro parts who, I discovered to my delight, was selling the A1398 WLEDs, so I bought a set from him for a very reasonable £15; Should be here in a couple of weeks I think, Nice! So I now have the backlight assembly and the WLEDs for the actual retina screen.

But, how does one control such a panel? Well there's this genius guy called Daniel (and his team of people?) over at http://dp2mbpr.rozsnyo.com/ that have worked on, and successfully produced, a controller that can drive the screen via a display port connection (ie Display Port 2 Mac Book Pro Retina - DP2MBPR get it!). Anyway, they have a batch of these things in production, of which I have registered my interest in purchasing one. They cost a pretty hefty $149 (£90ish) but given the effort that must have gone into this and the general passion for the project (check out the website) I think it's probably just about worth it.

As an alternative, if you fancied sending of the gerber files and having the boards manufactured yourself, there is another guy called Mike over at Mike Mods (http://mikesmods.com/mm-wp/?page_id=11) who had done the same thing open sourcing the technical details of the controller board with all required files provided; He's another freaking genius. P.s His blogs make for a great read.

All being well with this project, the intention is therefore to have a screamingly hot 2880x1800 resolution 15.4" IPS panel at the heart of my Intuos 4 with a (hopefully) well configured bespoke shortcut key controller. I just love building things! Wish me luck!!  ;)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca March 04, 2014, 11:37:45 AM
Macbook Pro Retina WLED Strip arrived this morning and matched up perfectly with the light guide and diffuser sheets from the salvaged LTN154AT10-T01 (Pictured below):

[attachment=1]

*Note* Actually that WLED strip isn't technically from the LAN154YL01 panel since this panel has not backlight strip (this was kind of the whole point of doing it this way), perhaps I should have written that it belonged to the Apple Macbook Pro Retina Chassis?

Since I don't have the controller or the screen yet I can't test the backlight but I'm sure it's fine; Perhaps I could have a probe with it later since Mike of MikesMods and Daniel from Rozsnyo have provided enough info to give this a go.

Right, off to order the controller.  :)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca March 04, 2014, 02:27:28 PM
One controller ordered. Exciting. ;D


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca March 07, 2014, 01:45:05 PM
One controller received!  ;D

[attachment=1]
[attachment=2]
[attachment=3]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thatcomicsguy March 07, 2014, 10:58:19 PM
Wow!  A retina 15" project?

If you get this working, it will be a giant leap forward for DIY kind everywhere.

Fingers crossed, man!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca March 08, 2014, 12:21:08 AM
Fingers crossed for sure, but I have confidence (perhaps foolishly). I've broken enough panels now to tread very carefully with this build, last thing i want is to break a retina panel. It's likely going to be a couple of months before i get the lcd as the coming weeks are going to be expensive what with a friends wedding and holiday coming up, however when i do get it i will do one test - which i will post the results of here - then the screen and controller will be measured for CAD purposes and put safely away until the enclosure is complete.

like I've said before, this project will be a slow burner; patience is key but temptation lurks to trip us up. I need to stay on the right side of patience.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 March 08, 2014, 05:26:57 AM
I was looking for the backlight unit(BLU) for retina panel, and you found that BLU from LTN154AT10-T01 is well matched.
But, before test with real panel, we do not know whether it is really matched well.
I hope that the diffuser should be long enough in y-axis, or it will show you curtain-shape light to your panel.
Usually, the diffuser of CCFL BLU is shorter than LED BLU, leading to curtain-shape light when we mod CCFL BLU into WLED BLU.
If there is such a phenomena, then you should change the BLU.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca March 08, 2014, 11:17:31 AM
Its a good point actually, although the LED strip itself had the diodes spaced closer than i have ever seen on any screen, there's 96 LEDs over the 330mm width!

If i do find this to be a problem I shall contact the guy that sold me the LEDs and see if he still has the BLU for the MBPR, but i don't expect it to be a problem given the Led density.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca June 12, 2014, 10:42:49 PM
Well I thought it was time to write a bit about what I've been up to with this build seeing as I scan the forums on more or less a daily basis without having done so for a while.

First up, I still haven't got the retina screen yet, these past weeks have been hitting my wallet pretty hard so this is on the back foot for the foreseeable future. Unfortunately this has meant that designing the casing has also had to take a back seat as I don't have the dimensions for the panel and I want to get a feel for it prior to committing to a concept. Hopefully I should have one by the end of July.

Ok, so what have I been up to?

Some time ago I think I mentioned that I was wanting to make a bespoke shortcut-key keypad for use in photoshop, however I was considering this ambitiously with little to no knowledge of how I might go about creating such a device. After many hours of trawling webpages to see if something existed that I could hack to do what I wanted, I finally gave up on hacking/modding to achieve my goals and took a leap into designing something from scratch.

During my intensive obsessive web browsing I was subtly seduced by a device called the ErgoDox ergonomic keyboard, a two part keyboard that has a dedicated keypad for each hand with keys that are positioned to make typing (and playing games) easier and quicker. A first glance and I was enamored. I began thinking about how I could incorporate the keypads into my build in a way that would give me simple quick access to shortcut-keys more efficiently. One small thing that I overlooked with the ErgoDox was the price and availability; turns out these things are expensive and can only be obtained through group-buy website Massdrop; a site that makes products available for sale based on their forums demand and offers a reduced price once a target number of people have committed to buy. This essentially means that the ErgoDox may not even be available to purchase for months until enough interest has been registered, and that once the initial interest has been registered, items are held in an open status while committed purchasers make their pledges meaning that this whole thing can take months from conception to delivery. This would be an expensive faff for something that probably wouldn't work for me anyway.

With the ErgoDox off the table I started looking into the hardware it uses and the firmware that supports it; turns out all this stuff is freely available as what appears to be a semi-opensource project - here: http://ergodox.org/Downloads.aspx

So I had a bit of a think about it and decided that I could try to manufacture a bespoke keypad taking some of the influences of this product while using the information for reference. After careful consideration of how I draw and where my free hand sits during drawing I came up with the following concept:

[attachment=1]

Orange keys are key set modifiers. The intention here is that they can be used to toggle the grey and black keys through 4 banks giving a total of 160 shortcut keys.

The Grey keys are to be used for incremented brush favorites, for example they may be used to increment the brush size, flow amount, or brush opacity from 1 through 100 in steps; maybe something like 1, 2, 3, 5, 10, 15, 20, 40, 80, 100.

The Black keys will be standard single key shortcut keys.

The Black central larger key is the 'Spacebar'.

The Green, Blue, and Red keys are modifier keys - Green='Shift', Blue='Alt', Red='Ctrl'. There are a set of modifiers on each side to make pressing combination keys more comfortable while not limiting where combinations can be positioned on the keypad.





: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca June 12, 2014, 11:30:37 PM
So the plan has been set and a target laid out, next up is the creation of such a device. A quick note here - This is still a work in progress but initial tests are showing some promise.

My keypad will be based around the Arduino Leonardo, a microcontroller that has USB capability out of the box with a decent set of USB communication examples readily included in the Arduino IDE.

There are 51 keys on my design and far less pins than that free on the Arduino, meaning that some kind of electronics trickery must be used to connect the keys to the Arduino. This takes place via I2C through an MCP23016 16bit parallel to serial chip, with the keys connected to it in an 8x8 array for a total of 64 possible keys (though only 51 will actually be used).

I initially had a small 2x2 grid setup on a breadboard connected to the MCP23016 to test the concept, but this quickly became messy and evident that an 8x8 grid would be unreasonable to work with. I was therefore forced to create a more permanent protoboard solution which is where I came up with this little beauty:

[attachment=1]

Those with keen eyes might notice that there are only eight keys on this board; an 8x1 array whats up with that? Well, the eight keys on the board represent one column of an 8x8 array, and to the right of the keys is an eight DIP switch module; the DIP switches allow me to select which row I wish to simulate giving me access to the whole 64keys! This is great because it keeps things simple and small and easy to test without being cluttering and confusing.

So far I have this proto-keypad working in a basic capacity where I can use it as a very simple computer keyboard allowing 8 simultaneous key presses at once; handy since this means I can flip all the DIP switches and check each row is working correctly - All works well.

The only thing I'm struggling with at the moment is the speed at which the keys can be pressed in rapid succession. Whilst not unusable this may become annoying later on so I consider this a problem that needs sorting before I expand on what I have so far. Once I have worked out where the problem lays I will begin looking into how to assign modifier keys and key set modifiers, but this may take some time since I'm no programmer and I'm pretty much teaching myself this stuff as I go along.

I have not gone into any detail on how I've got this working yet, this is deliberate since it would just be garbled nonsense while I find my feet, however I fully intend on providing resources and code once I have this keypad up and running fully. For now though, that's it, this is where I'm at with my build.   


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 June 13, 2014, 12:19:26 AM
might be a cheaper option to just modify a belkin nostromo for a macroable keypad like one of my previous projects. Then you already have good software to go along with it. http://geekhack.org/index.php?topic=20578.30 (http://geekhack.org/index.php?topic=20578.30). I use mine for 3ds max shortcuts and macros and used to use it for world of warcraft.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca June 13, 2014, 11:26:29 AM
I'm not sure about the Nostromo route being cheaper, they're £50 off the bat, and they don't have enough keys for me really. Besides, I'm more of a creator than an artist and I love taking on projects and pushing my abilities. I also have a huge box of salvaged equipment to rip into keeping my costs down.

I read through your blog on the geekhack forums and it would seem you are one ambitious person. I love your ideas and your CAD designs (solidworks?), but implementing these into a final product is going to be a heck of a task not to mention costly - especially the design with the android screens, but hats off to you and best of luck.

As for this project, I was lucky enough to source two vintage keyboards for nothing, one with Alps switches, and the other with Cherry blacks. Incidentally I'm also a geekhack forum member (mostly just lurking), and following this controller project I will be embarking on a full size mechanical keyboard based around the Teensy to match.

I see you've decided to use the Teensy in your controller project, what was the reason for the switch? Are you a savvy programmer? Perhaps I could pick your brains over some code at some point.



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 June 13, 2014, 05:47:58 PM
That one kinda got put on the backburner but i decided to switch to the teensy because i already have a few of them laying around. as for programming i usually modify existing code or pick pieces from different ones but i am getting better. im alot better on the hardware side of things.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 June 15, 2014, 07:59:09 PM
Just setup this as a programmable keypad last night.
Might be a good option as the mainboard and you can wire mechanical switches to each pad which is what ill be doing soon. (http://makezineblog.files.wordpress.com/2009/11/launchpadteardown_cc.jpg?w=600&h=600)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca June 15, 2014, 08:54:22 PM
That's a pretty tidy solution actually and had I seen this a couple of months ago I probably would have gone this route for sure, but I'm invested in creating a controller from scratch now - it's sadistically more fun!

I'm making a few steps in the right direction and have modifiers semi-working, just wish I could be fluent in c++ so I can just see the matrix without all the effort.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 June 15, 2014, 10:22:09 PM
too bad youre not Neo. haha. ya that was my problems with getting a keyboard going was understanding the matrix coding fully


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 01, 2014, 08:10:05 PM
I did it! I bit the bullet and placed an order for the Macbook pro retina screen.

Now I wait for delivery................................................ :


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 09, 2014, 12:24:20 PM
It arrives!!!

The A1398 Macbook Pro Retina Panel has arrived this morning in all it's super thin glory, now I just have to wait five and a half hours til I finish work to have a play. Oh how the day drags when you're clock watching.

Here's the cellophaned LCD as a taster of things to come:
[attachment=1]

Can't wait to power this thing up!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 09, 2014, 05:30:01 PM
Doh! I forgot to buy a Displayport cable and power supply for the screen, what a complete dunce. Well I guess it's gonna be a few more days before I can test it out properly.  :(


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 09, 2014, 10:07:42 PM
No, wait, I dunce again!

Turns out I do have a power supply, in fact I have two!! A 12V 1A linear supply (on the left side of the picture), and a 12V 2A Switch mode power supply (on the right). I'm not going to tackle this tonight, but I've been bouncing ideas around with DaBotz regarding jitters, and I think that the cleaner output of a linear supply might help to reduce the jitters; now I can compare them!

[attachment=1]

Well almost 'now' as I still don't have a DP cable yet.


Oh, and I forgot to mention that my latest idea is to power the Wacom from the same supply as the screen by hacking a USB cable and using a regulator. Based on something like this audiophile guy has done: http://2channelaudio.blogspot.co.uk/2013/01/audiophile-usb-yes-your-cable-makes.html


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 July 10, 2014, 02:16:23 AM
Oh, and I forgot to mention that my latest idea is to power the Wacom from the same supply as the screen by hacking a USB cable and using a regulator. Based on something like this audiophile guy has done: http://2channelaudio.blogspot.co.uk/2013/01/audiophile-usb-yes-your-cable-makes.html

That would be cool. No power supply for the LCD.. but it must be challenging to make it fancy :)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 10, 2014, 06:13:48 AM
Sorry, I meant that the screen would be powered the normal way with a power brick, but that part of that power would be tapped to power the tablet as opposed to the computer powering it via USB. This way I can keep the grounds common (the same) and remove floating voltages. The Cintiq13hd I think does this via it's 3in1 cable.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 11, 2014, 12:44:55 PM
DP cable arrived this morning so now I think I have everything I need to test the panel for the first time. I will check this out when I get home and post some pics of the test when I get a chance.

On other news, I've been working on the USB power injector to drive the Wacom tablet since I'm convinced this will have a major impact on reducing jitter.

First things first I've ordered a pre-made injector cable from a company called MSDist (https://www.msdist.co.uk/product_MikroTik-5V-USB-Power-Injector.php) that looks like this:
[attachment=1]

This USB injector is not really designed for the purpose in which I intend to use it, it is really meant to be used to power something like an external hard drive when connecting it to a device that cannot provide the power to run it, and this means that for my case a slight modification needs to be made to the cable on the computer side of things. Most computers require that a load is present on the USB cable in order to begin sending and receiving data, a feature that I imagine this cable lacks due to it's intended function, so what I will be doing to rectify this is to chop off the Male connector and replace it with a modified connector (see images below):

[attachment=2]

The two pins in the middle are the data pins, the only ones that are required to transmit/receive data to and from the computer.

[attachment=3]

As you can see the dummy load I have used here is a 3mm dim red LED which works really well. For anyone interested it's rated at about 1.8V so I have also placed a 160Ohm resistor in series with it to limit the current (so the LED doesn't blow) and to drop the voltage from 5V to around 1.8V.

The actual injector cable hasn't arrived yet so I'm as far as I can get with this for now, fingers crossed it's worth it!


------------------------------------------------------------------------------------------------------------------
edit:

I realised that with all my enthusiasm and eagerness to crack on with something, without fully thinking it through I created a cable (in the next post) which bypassed the need to mess with the purchased injector cable. A happy accident!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 11, 2014, 02:52:33 PM
So I managed to dig out an old shielded USB cable from a junk box, lopped off the ends and attached the USB DIY connectors to make a new cable. By the way I got the connectors here: http://www.hobbytronics.co.uk/cables-connectors/usb-connectors - a quick note on this though, I had to drill out the wire outlet holes to 4mm to fit the cable I was using, a cable which I didn't think was thicker than standard.

[attachment=1]

[attachment=2]

[attachment=3]

The modification to the wacom power lead is still not quite complete as there's a matter of reducing the length of the USB cable at the Wacom end of things, and somehow splitting the power from the adapter; It occurs to me I forgot to think about splitting the power, ah well no big deal I'll just look through my box of junk again. 


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 14, 2014, 09:25:57 AM
I had a pretty busy one this weekend which meant that I didn't get half as much done with my build as I would have liked, but I do have some things to talk about so I'll begin.

First, the USB injector cable I purchased doesn't appear to be wired as expected; I plugged a 5v supply in, hooked up my custom cable and plugged in the Wacom, but no power was received by the tablet and Windows didn't see anything (which I suppose is to be expected with no power at the Wacom). I didn't have time to investigate this further but I'll do a bit of digging later this evening to see if I can work out what's happening.

Next up is the first power test of the Macbook pro retina panel. This did not go at all as I had hoped and two pretty big spanners forced there way into the metaphorical works. Firstly, I can't seem to get the panel to work at all with a switched mode power supply of 12V 2A, the backlight would flash on and then the screen switches off with a blue flashing status light, using a linear supply of 12V 1A gets the panel working great initially but then shuts off after about 30seconds and a flashing status light comes on again to report a problem; I can't remember if the status light was blue or red in this case but either way it's not what I was hoping for. I've contacted Daniel at Rosznyo (makers of the controller board) and he has provided me with a list of debug LED codes so that I can figure out where the problem resides, he also appears to be keen to get this problem resolved and has offered a repair or replacement, but this might not be necessary.

One suggestion that Daniel made was to turn the brightness of the backlight down to see if the screen will stay on for longer, he says that the blue flashing light relates to a problem with the backlight circuitry. So I tried this this morning and found that the screen would stay on for a longer period than before although I had to leave for work so I wasn't able to do a proper test of this. I also found that if I used the linear power supply to reduce the brightness of the backlight, then powered the controller down and switched power supplies to the switched mode one, the screen would illuminate and the desktop of my computer could be seen in all it's WXGA glory. Trouble is that a change to the brightness of the backlight caused the controller and screen to shutdown, and that pesky blue flashing LED reminds me that there's still an issue.
Anyway, I've reported all of this back to Daniel and I await a response, hopefully he will have some solution (firmware update maybe?) that might be able to resolve this.

The second spanner relates to jitter, it's horrific!! Now I imagine that this is to do with a complete lack of shielding, components just resting on top of the tablet and a complete lack of common grounding, but it's still way worse than I had hoped it would be. This could be just be related to the floating ground USB thing that I've been harping on about, but until I get my bespoke cable working correctly I can't really test this.

And a last final note which relates to the use of Liner vs Switched mode power supplies to reduce jitter, I see no significant improvement using the Liner supply over the Switched mode supply; Both supplies produce lots of jitter the way things are currently. If things change as I implement shielding and proper grounding then I'll update, but for now it doesn't appear to make a difference.

All in all a slightly disappointing start to a project that I had high hopes for, but I guess it's not over yet.

I almost forgot, here's a pic of the screen while it was working (sorry for the quality my phone camera didn't like the dim lighting):
[attachment=1]

The picture quality and colours are superb, If I can get this working it will be amazing! Just need to hold on to that thought as I force a path through the build issues I'm facing.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 20, 2014, 10:32:43 PM
Had another busy weekend this week so once again very little time to do anything, but I decided just now to spend a few minutes to doing a quick bit of soldering to test if injecting power into a USB line will play happily with a graphics tablet; since I did not want to kill my I4 on a test I decided that a suitable physical replacement would be my little Wacom Bamboo.

I decided against using the injector cable I purchased (damn waste of money) and hardwired the power supply, set to 5V, directly into the USB Female connector. Some pictures below:

[attachment=1]

[attachment=2]

I'm pleased to report that the Bamboo works flawlessly when the power from the computer USB socket is bypassed and an external power source is used. The next test is to see if I can power both the screen and the tablet from the same power supply; powering both devices is straight forward, I just need to build a small regulation circuit to drop the screen voltage of 12V down to 5V, a simple 7805 regulator should do the trick here.

I'm not going to be able to tackle this tomorrow as I'm always busy at the moment, but hopefully Tuesday will fair better so hopefully an update then.

On other news I have purchased a sheet of 0.5mm thick aluminium which will be used as a shield layer to surround the TFT panel. The idea here is that it will entirely cover the Intuos 4 surface (including the buttons, I don't use them), and have a window cut exactly to the active area of the tablet. This is tightly linked to the case design so progress here will come at the same time as the case chassis is built.
I hope this week to purchase some flexible (kerfed) MDF so that I can build the former template that laminate sheets of plywood can be squashed in to perfectly contour the sleek curve of the Wacom. Most of the time spent here will actually be on the template since I want the final chassis to have a very snug fit with the I4 making it easy to lift on and off. Top tip from a woodworking forum was to use Titebond Extend wood glue for the laminations since it's cure time is deliberately longer to allow for working time, so this is on my 'To Order' list as well.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 22, 2014, 09:53:43 PM
Just a quick and slightly disappointing update here. I made the cable and powered the Wacom and the LCD from the same supply to see if the jitter could be reduced this way, it wasn't. There was no noticeable difference in the amount of jitter when the Wacom was powered via USB vs when powered using the LCD supply. At least this has been tested now though I guess.

On other news, I've designed the bending form for bending the plywood laminates and I hope to get the drawings off to a CNC machining company within the next couple of days. I have also picked up an awesome deal on some Eucalyptus veneer sheets that I eventually hope to finish the case in - If the pictures online are anything to go by this veneer is beautiful; I'll post some pics once I've received them.

 


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 July 23, 2014, 08:23:39 AM
Have you tryed sheilding the control board and leds yet. Does lowering brightness do anything to combat jitter?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 23, 2014, 09:57:22 AM
No I haven't seriously started trying to minimise jitter yet, it was more a little test to see if providing power from the same source would make a difference. Perhaps it's too soon to judge as it may well help once I have build the case and applied some kind of shielding.

I can say that turning the LEDs down/off makes no difference to the jitter either, so it's definitely emanating from the panel itself. I'm not too worried about this at the moment, I think I will be able to minimize most of this once I get building properly.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 30, 2014, 08:43:01 PM
So way back at the beginning of the Serenitiq2 build I said about how I wanted to create a contoured chassis, I showed a few pics of how I wanted it to look and then it all took a back burner while I awaited getting the screen.

Well I've been working on turning the contoured chassis into a reality and most of the build from now on will be focused on this. The design has been drawn up, the dimensions have all been calculated, materials have been chosen and in some cases purchased, and the concept is beginning to take shape.

As always, here's some pics of progress so far:

[attachment=1]
This is the form that I am building in order to create the curve required to contour to the Wacom I4 surface. This structure is a simple 9rib base that has been calculated to have the same curve as the Wacom I4. The edges extend down further to allow cutting back and cleaning up the cuts. The base is made from MDF, and bendy MDF also known as kerfed MDF - MDF that has slots cut across the width of one side to allow flexing.

Originally I had decided to send the drawings off to a company to get the form cnc machined but the quotes I received were really expensive, so I decided that I can undertake this task with as good a level of accuracy. I found a company on ebay that will cut MDF pieces to size and for a very cheap price (a little more than the cost of the MDF); they will be cutting cutting the basic shapes for me to the correct sizes, and then I will add the curve to the ribs.

[attachment=2]
In order to make sure that the curve is the same on each rib I created a drawing of the outline of a rib in Sketchup and then transferred it to Inkscape via DWG file format. The idea here is that with this piece cut from 3mm MDF I can use it as a template to run my wood router bearing follower bit along, keeping all ribs exactly the same shape.

[attachment=3]
I sent the file off to Razorlab and for around £10 (including P&P), with a turn around of 2 days(!!!), they sent me a physical rib template. Here you can see the MDF rib alongside the full scale paper print rib.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 30, 2014, 08:47:32 PM
Here's just a few pictures that show that I got my maths right when working out the radius of curvature. FYI the radius of curvature for this I4 is (67.8+/-0.1)mm  in the event that anyone was wondering; I specify that this is the R.O.C for my I4 since manufacturing processing may vary this, but I would expect it to be the same if not similar on other I4 tablets.

[attachment=1]

[attachment=2]

As you can see the curve is perfect.

Next progress update is likely to be once I have built the form.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: profaldo July 31, 2014, 06:11:56 PM
This looks beautiful man, just beautiful.

What are the ribs for?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 31, 2014, 10:27:36 PM
Cheers. The ribs are part of a template (or form) which will be used to bend and glue 5 thin layers of ply to make one thick curved piece - the contour.

I hope the final product works and looks how I have in my mind, at least the smoked eucalyptus veneer should give it a beautiful finish.

Just waiting for a few bits to be delivered before I can progress further.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: profaldo August 03, 2014, 11:35:02 AM
This is very very interesting. I was planning to laser cut aluminum panels for my build, but now I have decided to wait and see how your build comes out :D

By the way, there is a wireless touch pad / keyboard combo by some company called Lofree that I am planning on incorporating into by build (have to figure out how). Following is a video on YouTube, thought you might find some use for it in your build too:
https://www.youtube.com/watch?v=zSjBJgVohmw#t=228 (https://www.youtube.com/watch?v=zSjBJgVohmw#t=228)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 05, 2014, 09:29:05 PM
That Lofree MT-200 looks pretty sweet actually and it's really cheap! Makes me question the quality, but I might get one anyway at some point. I've put the controller idea on the back burner for the mean time while I build the case for the Serenitiq2, but I still have plans to revisit this in the future.

On that note, the cut MDF pieces have been received and I have been busy cutting the curves on the ribs of the form this afternoon, so all that remains now is to screw the parts together and attach the bendy MDF sheet.

Here's some pictures:

[attachment=1]
The cut MDF pieces arrive!!!


[attachment=2]
All laid out.


[attachment=3]
The laser cut template fixed to one of the ribs ready for routing.


[attachment=4]
The first routed rib; this rib will become the new template for the cutting of all the remaining ribs. The MDF piece that is clamped to the bench is just some scrap that I used to hold the rib while cutting.





: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 05, 2014, 09:47:41 PM
[attachment=1]
The other 8 ribs rough cut ready for routing.


[attachment=2]
All ribs routed and laid out ready for screwing together.


The keen eyed among you might notice that the ribs are considerably taller than I had modeled in sketchup, this was because the company that cut the pieces for me decided to make them 90mm tall instead of 30mm as per my specifications, however I didn't kick up to much of a fuss since the height makes no difference to the function of the form and I was excited to get building.

Oh, and since I'm on a roll with posting photos here's a couple of the plywood sheets:

[attachment=3]

[attachment=4]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 August 05, 2014, 11:32:11 PM
IF you need help with controller i can probably help you out. I just posted one i built for mine in about 2 days and learned alot.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 06, 2014, 01:15:04 PM
Ahh yes, I think I might take you up on that offer. So you have a whole bunch of keys controlled with a Teensy, which serial to parallel chip did you use to build the switch array? Is it easy to change the function of the keys? have you implemented modifier keys too (shift/ctrl/alt etc)?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 August 07, 2014, 01:08:48 AM
it doesnt use any chips other than the teensy. its a grid of rows and columns. all wired to different digital pins with diodes on the row connections from each switch. im using a firmware called tmk firmware. its fairly easy to configure. dont have a picture with me of it finished wiring but its pretty much just a wire from a pin on teensy board to one of the wire strands
 (http://i.imgur.com/2TH5YxW.jpg)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 07, 2014, 08:20:11 AM
Ah yes of course because you can have 64keys with 16 I/O pins in an 8x8 array, any more and you'd need to start using a parallel to serial converter. I'll check out the tmk firmware, I think this is quite a viable option for me, cheers.

Also, is that an Arduino Leonardo Pro Micro and not a Teensy? Interesting. How did you load the Teensy firmware onto the Arduino? Don't they have different boot loaders?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 August 07, 2014, 09:00:36 PM
well theres a teensy in one half of my keypad and a pro micro in the other. i flashed the pro micro with a dfu bootloader that works with teensy and atmel flip software. i have it on all 4 of my pro micros.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 07, 2014, 10:01:44 PM
Nice, I didn't know you could do that. I have a pro micro somewhere I'll have to give it a go. Thanks for letting me know about this, it's definitely a possibility.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 August 07, 2014, 10:05:50 PM
i used this guide for setting up the firmware. http://deskthority.net/workshop-f7/how-to-build-your-very-own-keyboard-firmware-t7177.html (http://deskthority.net/workshop-f7/how-to-build-your-very-own-keyboard-firmware-t7177.html)
Switches are cherry mx brown switches and for the wire i used 30 gauge single strand teflon coated and used solder to melt away coating at the connection points so its one singe wire for each row or colum and you dont have to worry about shorting.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 18, 2014, 08:46:03 AM
I've been looking into the firmware you posted but bricked my ProMicro trying to flash the dfu bootloader. Luckily I had a arduino uno to hand which let me reflash the arduino bootloader and get it back again. How exactly do you go about successfully flashing the dfu bootloader?

On other news, progress on the case has been slow and frustrating, partly due to other commitments and partly due to a flaw in my design of the bending form. It turns out that 6mm kerfed (bendy) MDF is actually very stiff and also fragile when exposed to excessive force, and consequently - after breaking the MDF a couple of times - it is clear that this is not the way to go. I have since ordered some standard 2mm thick MDF to use instead as I believe that this should still provide the structural integrity that I require of the form whilst still being bendable. We'll see.



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 August 18, 2014, 06:49:42 PM
i used a usbasp programmer and this command after you navigate to the folder in cmd prompt. i use that for flashing anyfile to my pro micros

avrdude -v -patmega32u4 -c usbasp -U flash:w:BootloaderDFU.hex \
   -U efuse:w:0xcb:m -U hfuse:w:0xd8:m -U lfuse:w:0xff:m

you can grab the hex from here at bottom of page http://www.stanleylio.com/home/usblufa (http://www.stanleylio.com/home/usblufa)
and wiring for programmer is here https://code.google.com/p/mmjoy/wiki/UpdateFirmware_eng (https://code.google.com/p/mmjoy/wiki/UpdateFirmware_eng)

if you are using jumper wires to connect programmer sometimes they dont get a good enough connection to program correctly. i had an issue with cheap jumper cable connections at first



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 19, 2014, 08:18:33 AM
Thanks for that, I've now ordered myself a USBasp programmer to give this a go; I figure this will be a useful addition to my growing electronics set. Until I receive it though I'm going to see if I can find a way to flash the hex using another arduino as the programmer - because I like to frustrate myself.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 20, 2014, 12:58:38 PM
Ok, so I used a similar method to yours thp777. Once I had the USBASP programmer and drivers installed I used the BootloaderDFU.Hex (from the link provided by thp777) and flashed it to the arduino pro micro using a neat little app called Arduino Builder (I used version 0.8.9) with the selection of 'Leonardo' since 'Pro Micro' wasn't an option and they're more or less the same. Success!! What had taken me far too long to fail at took about 30seconds with the right tools. Thank thp777 for pointing me in the right direction.

Now, to try the tmk_firmware. Wish me luck!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 21, 2014, 03:18:43 PM
I'm starting to understand the tmk firmware and wow how well has this been written! I'm slightly confused about something though, is there a way to have one key transmit a series of keystrokes? For example having a single key press perform [CTRL]+[R], or [SHIFT]+[ALT]+[DEL].

From what I've read I think this might require an 'Action Macro' but I'm uncertain how to modify the code to achieve this. Any ideas?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 August 22, 2014, 04:38:50 AM
this should help
copied from here https://github.com/tmk/tmk_keyboard/blob/master/doc/keymap.md (https://github.com/tmk/tmk_keyboard/blob/master/doc/keymap.md)
2.3 Macro action

TBD

Macro action indicates complex key strokes.

MACRO( D(LSHIFT), D(D), END )
MACRO( U(D), U(LSHIFT), END )
MACRO( I(255), T(H), T(E), T(L), T(L), W(255), T(O), END )

2.3.1 Macro Commands

    I() change interval of stroke.
    D() press key
    U() release key
    T() type key(press and release)
    W() wait
    END end mark

2.3.2 Examples

TODO: sample implementation See keyboard/hhkb/keymap_hasu.c for sample.

FN8 goes on keymap for keys

enum macro_id {
        ALT_TAB,

const uint16_t fn_actions[] PROGMEM = {
#endif
               [8] = ACTION_MACRO(ALT_TAB),                      // Application switching works as FN8 in keymap
}

const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
{
    switch (id) {
    
        case ALT_TAB:
            return (record->event.pressed ?
                    MACRO( D(LALT), D(TAB), END ) :
                    MACRO( U(TAB), END ));
    }
    return MACRO_NONE;
}


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 22, 2014, 10:44:13 AM
Excellent!!!  :D Thanks so much, I'll give this a go this morning and see how I get on; I'm just keeping things simple and testing on a simple 2x2 matrix so that I can debug easily. I hope you don't mind me bugging you about this.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 22, 2014, 01:16:48 PM
Works like a charm!! This is fantastic and means I can now have a think about exactly what keys I want where and not worry about how to implement macros. Once again, thanks so much thp777.

Although, before I get too excited perhaps I should try a macro on photoshop since this is what I hope to use it on.





: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thp777 August 23, 2014, 08:15:43 PM
Glad to help. Lately Ive been programming my keypads, a wireless gaming mouse, micro quadcopter and a bluetooth 4.0 board so ive been learning alot and im also a google search expert haha


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 04, 2014, 10:07:31 PM
Back to my build (Keypad aside once again).

The progress on this build is slow since I am tackling challenges that I have no experience with and they are taking a whole bunch of time to get right. As you will know if you have read this thread to this point, I am hoping to make a case contoured to my I4, this has meant that I have needed to build a template (or form) which I can use to bend some thin pieces of plywood over. A part of this that I have missed out is how I intend to keep the plywood bent while the glue dries, for this I will be using a vacuum.

To create a vacuum I decided to build a large PVC bag and hook it up to a vacuum pump (borrowed from my work) - this technique is known as vacuum laminating. The idea is that you pump all the air out of the bag and atmospheric pressure presses down on the laminate to be formed and time does the rest, simple! So I purchased some supple PVC sheet (like you find on baby buggies), and glued the edges to form the basic shape.

Here's a few pictures to help explain a bit better:

4 sheets of ply resting on the form.
[attachment=1]

Applied some pressure to bend the ply over the form - pardon my hairy hands!
[attachment=2]

The first side of the vacuum bag is sealed off. Didn't have enough G-Clamps to do both sides and the table was too wide.
[attachment=3]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 04, 2014, 10:14:25 PM
The finished bag!
[attachment=1]

All folded neatly for temporary storage.
[attachment=2]

The form inside the bag so you can get some idea of the size of the thing.
[attachment=3]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 04, 2014, 10:25:15 PM
And finally the first test of the vacuum bag. The blue material is resin infusion mesh and is smooth on one side and rough on the other. It allows for all of the air around the mesh to have a clear path to the point where the air is being drawn. Also, the piece of wood you can see on top of the mesh (and under the PVC) is just a platform to hold the bolt from the vacuum nozzle away from the surface to be formed, this prevents the bolt from causing any damage to the laminates or the form. The wood was an offcut of the kerfed MDF that proved unsuitable for the form but, in this capacity it works well to allows air to pass to the nozzle due to its pre-cut grooves.

[attachment=1]

The form has been left in the bag and under vacuum overnight tonight to see if it can hold the vacuum until the morning, a crucial test before I embark on the actual forming of the laminate ply pieces. Fingers crossed, I just want to get it together now!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 05, 2014, 01:36:12 PM
Well the seal failed and the vacuum was lost overnight  :(, however, a close inspection during pumping lead me to faintly hear a leak around the valve  :). So with hope that this is the only leak I seek to remedy this, but I'm going to need to buy some thin silicone washers since there's not much room due to a short screw thread. I'll order these online so a progress report will continue again next week.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 17, 2014, 01:19:38 PM
Back again. I did manage to isolate the leak in the vacuum bag (it was the valve) and this has since been corrected and tested a few times, all good.

This morning I took the plunge, glued all the ply pieces together and stuck them in the bag. To my surprise the bag is holding a vacuum better than it ever has and it all seems to be working fantastically well. Here's a picture of the actual lamination in progress (currently it's been in vacuum for nearly 4hours).

[attachment=1]

You can see that the curve isn't flush to the form but this doesn't really matter anyhow as most of that is excess material that will be trimmed back to match the dimensions of the Intuos 4.

Hopefully the next pictures I post will be of a successfully formed plywood piece ready for the countersinking for the screen and backlight.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 18, 2014, 10:03:03 AM
Feeling very smug this morning as the lamination totally worked!!  ;D

Here's the latest pics:

[attachment=1]

[attachment=2]

[attachment=3]

[attachment=4]

You can see that there is quite a bit of overhang, this is to allow for trim back and cleaning of the edges - no doubt the next pictures I post. I am super delighted with how this has turned out so far and the feeling that I have bitten off more than I can chew is slowly subsiding.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: profaldo September 18, 2014, 10:36:21 AM
Man that looks like a piece of art in itself!

Really excited with this build.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 18, 2014, 10:47:29 AM
Thanks. It is a beautiful shape, although I think I really should give that credit to Wacom.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 26, 2014, 11:55:35 AM
Here's some pics of progress so far. The edges of the plywood have been routed back to size and squared off nicely.

[attachment=1]
I love the grain on the edges of the ply, unfortunately I chose to use a handheld circular saw to trim the sides back which subsequently resulted in an awful angled cut that lead to having to trim the sides back further than I had originally wanted, this meant that the lovely ply edging that I had hoped for at the sides had to be rejected in favor of a different approach. I chose to use some more laminated pieces which will be glued to the edges to make up for the lost material and provide a lovely grain in a different direction; I've come to prefer this idea now I've gotten over my frustration of making a silly mistake.

[attachment=2]
This angle shows how short I had to cut the sides; it's about 8mm each side.

[attachment=3]
This shows the basic idea laid out above with the smoked eucalyptus veneer placed on top. How nice is this venner, such a beautiful grain and colour, and really pops the contrast of the plywood. Just waiting on some veneer glue before I proceed with veneering. Hopefully I'll get a chance next week.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: kajuzas September 26, 2014, 12:45:36 PM
Looks amazing, cant wait to see it finished. Keep it up


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: woodguy32 September 26, 2014, 04:32:06 PM
Beautiful Woodwork  Aerendraca,    The laminated curved contours is not an easy thing to produce.. The finished build will have a Awesome look and feel....

 Congrats.. I really dig these builds..



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 01, 2014, 01:12:35 PM
Thanks for the kind words and encouragement.

A really minor update today. I was toying with methods of how to attach the overlay screen assembly to the wacom to stop it from slipping around during use. I came up with Velcro, harness straps (like something you might find on a backpack), I also considered mechanical clamps and fixed clamps, but in the end I decided to use some strong neodymium magnets and anti-slip mat!

As always here's some more pics:

[attachment=1]
The magnets.

[attachment=2]
The magnets have been placed on the lower edge (as seen in this picture) and close to the digitizer circuit.

[attachment=3]
So that the magnets would fit inside the case a slight modification had to be made to make some space. This image shows the underside of the top of the Intuos 4 (the bit you draw on); a small amount of structural plastic was removed.

[attachment=4]
The Intuos 4 is reassembled and two more magnets are placed on the case to show the location of the internal magnets.

[attachment=5]
The overlay case is placed ontop of the tablet and the magnets are once again placed so you can see where the internal magnets reside within the tablet. Ignore the filler paste, I needed to fill the holes I made before I can apply the veneer.

Though I haven't yet tested to see if this impacts on the performance of the tablet, I very much doubt it will as the magnets are not close to the active area and are far from sensitive electronics. I will test this tonight to confirm if I get the chance. The other thing I will say is that I have only placed the magnets on the top edge of the tablet, there are two reasons for this, the first is that the magnets are strong and just on that edge provide a pull of 22kg (that should be plenty), the second is so that the overlay is easier to remove by lifting the lower edge.

The next stage is to embed opposing poled magnets in the plywood case - hopefully this will prove to me that 22kg pull is sufficient otherwise the wacom case if off again and two more magnets are going in!

Oh, and the anti-slip mat is to stop the overlay from moving side to side.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 01, 2014, 08:50:24 PM
The magnets have been countersunk! I should have taken a photo of the dodgy jig I built of scraps attached to a pillar drill using a router bit - dodgy it was but it did the job (albeit a bit rough around the edges).

[attachment=1]

I decided to double up the magnets in the plywood as the strength of a single layer was a little bit weak, a double layer is fantastically strong, and combined with the anti-slip matting the overlay will not budge - even at angles approaching 90degrees!!

The tablet is at my work so I am unable to test to see if the magnets affect anything until tomorrow when I take my pen in. I'm sure it will be fine.



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 02, 2014, 05:42:04 AM
Gorgeous, I love your vacuum laminating(?) technique.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 02, 2014, 01:07:24 PM
Thanks. How are you getting on with your mbpro retina build? You realize I regularly scope your thread for ideas.  :)

Super-quick update this time: Overlay tested and I can confirm that the magnets do not affect the tablet at all and the thickness of the overlay doesn't impinge on the usability of the pen either which is great.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 06, 2014, 08:20:45 AM
After having thought about the locating magnets I've used and their strength, I decided that it is probably wise to try and contain the magnetic field as much as possible to prevent accidently wiping a debit card or phone etc, so I spent some time looking into metals that are good at redirecting magnetic fields and did a few tests with some pieces I have laying around. I was lucky enough to source a small piece of scrap mumetal (ferrous metal with high nickel content) and found it to be very good at redirecting the field lines given it's thickness was only 0.5mm, however the piece is scrap and not really usable, so I found a seller on eBay from Canada who can supply small sheets (10" x 8") of 1mm thick mumetal for a reasonable price and ordered a sheet.

Until I receive this the build will have to remain on hold as the next step is veneering and I can't do this until the magnet holes are filled.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thatcomicsguy October 08, 2014, 12:51:28 AM
Holy smokes!  I'd not checked in on this project recently, and it's looking gorgeous!

That formed plywood brings my heart to my throat.

And that smoked eucalyptus..!  And that elegant magnet solution...

I'm totally jazzed about this build.  You're pushing boundaries I didn't even know were pushable!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 08, 2014, 02:03:14 AM
Thanks. How are you getting on with your mbpro retina build? You realize I regularly scope your thread for ideas.  :)

Super-quick update this time: Overlay tested and I can confirm that the magnets do not affect the tablet at all and the thickness of the overlay doesn't impinge on the usability of the pen either which is great.
been busy these days for my research.
I think I should make new case for the tablet. I've looked into Intuos 5, and found that space is too tight..
It looks like eDP cable extension tool cannot be placed inside Intuos 5. Still thinking..


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 08, 2014, 06:35:16 AM
@ thatcomicsguy, that's really nice of you to say, thanks so much. Because this build is a really slow burner, all the encouragement I can get helps to keep chipping away.

@ bumhee34, what solution have you come up with for extending the edp cable?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 08, 2014, 07:50:36 AM
@ bumhee34, what solution have you come up with for extending the edp cable?
It might be better to explain with pics. Proper connectors are soldered on some boards( do not know how to call them), then I will connect them together.
[attachment=1]
Following pic is one of example that my friend working. So two of them will be connected with wires with simple soldering.
[attachment=2]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 08, 2014, 08:56:24 AM
Very nice!!  :)

In the unlikely event that you should end up with too many of these, I would very much like to perhaps buy a couple from you. Might this be a possibility?

The eDP wire is just too short to get all that creative with.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 08, 2014, 09:15:10 AM
Oops, extras are for my friend. He also has same plan to make 15" retina tablet.
And, shipping fee may be huge, cause i'm living in Korea  ;)
But you can easily find the connectors in aliexpress or ebay(in my memory), and the board (forgot the keyword, but i saw them) in cheap price.
And you must have nice hands for soldering  ;D


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 08, 2014, 09:37:56 AM
That's OK, I didn't expect you to have spares - why would you? Actually I think I could do some kind of simple reflow to solder the connector. If you happen to remember where you got the board from or know an alternative place please let me know - I can't find anywhere to get this type of breakout at the moment.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 08, 2014, 09:44:15 AM
That's OK, I didn't expect you to have spares - why would you? Actually I think I could do some kind of simple reflow to solder the connector. If you happen to remember where you got the board from or know an alternative place please let me know - I can't find anywhere to get this type of breakout at the moment.
Here is an alternative : http://www.ebay.com/itm/0-4mm-1-0mm-pitch-FPC-connector-to-DIP-Max-46pin-PCB-test-board-/170907313874?pt=LH_DefaultDomain_0&hash=item27cadea6d2


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 08, 2014, 10:23:38 AM
Thanks alot!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 09, 2014, 12:06:10 PM
@bumhee34 - I noticed on your drawing that you have put the connector as 204n4-030e-11, but it's actually 20474-030e-11. Took me a little while to work out why I couldn't find it anywhere. Also, the results are much cheaper if you search for the part rather than for "A1398 LVDS connector", try it yourself, it's like £8 cheaper!!

I've subsequently ordered 4 of these connectors, 2x 0.4mm to DIP adapters, come Sn63/Pb37 Solder paste & 40g flux, and a 1.5m premium flat scart cable.

Why the scart cable? I'm glad you asked. I spent a long time trying to find a shielded cable that has 30 cores (one for each of the 30 pins on the eDP connector), but the only ones I could find were super expensive so, because I'm cheap, I thought about technology that existed that was coming to it's end of life and is therefore no longer desired (hence cheaper), and I thought of TV scart cables. A decent scart cable typically has 20 wires and a common ground ( doubles as shielding), a premium scart cable has individual shields per wire and a further shield surrounding all of them, perfect! Since 20 wires are not enough, I will use two pieces to distribute the eDP signal..........Perhaps I could use the extra wires for USB? hmmm.

Anyway, the scart cable I have chosen is moulded into a lovely flat pvc casing - not sure if it's the blue one or the black one but either should look sleek as heck coming out of the back of the overlay. The wire is made by Ixos and is model XHT611-150.

Manufacturer site: http://www.ixoscables.com/cgi-bin/ixos-cables/XHT611-150.html

Detailed image of wire confiuration in Ixos XHT611 http://www.futureshop.co.uk/images/XHT611xs_upgrade.jpg


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 10, 2014, 02:33:54 AM
Oh, sorry for my bad writing T^T

If u search in taobao.com with the keyword 20474-030e-11, you can buy it less than 1$ o_O. Anyway it is cheap.

And I want to let you know that my plan is slightly changed. The extension may not be done in the way I've explained.

To save the space, the connectors will be soldered into 0.4mm pitch FPC cable. Luckly, I found this kind of FPC cable, http://item.taobao.com/item.htm?spm=a1z09.2.9.24.6iSQ6R&id=37779275237&_u=a1uufgjff0a1.

Total pin number is 60 (30 and 30), so i can use 30 of them. And my friend told me that he can solder connectors directly on this FPC cable. Also, he warned me that it could be easily fell off.

Anyway, I can insert this extension tool easily in intuos5 w/o any problems in this way (I hope).

So, I've ordred and waiting for the delivery. It is coming from China, so maybe I will get it next week. If I succeed, then you can see the results in three weeks.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 10, 2014, 02:37:21 AM
And, actually, I do not know whether we should use shielded cables. For many builds I tried, the cables have not affected to the jitter issue in my case.

Anyway, it must be better, but do not know how much will be better. Hope I could see your result soon! :)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 10, 2014, 06:38:04 AM
Soldering to fpc is really tricky, I've done it before but only on about 10 contacts. It's not just the scale you have to worry about, it's the heat transfer to the kapton material. Also, you friend must have nerves of steel, a steady hand, and plenty of patience, that's an awful lot of tiny soldering to undertake.

if you are looking just to extend the wire, could you not just find a long i-pex 20472-030T to 20472-030T cable? I'm sure I've seen sites that sell these. In my case i need rigidity which is why i went with scart cable.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 10, 2014, 07:53:04 AM
Maybe this cable: http://www.cables-oem.com/html_products/I-PEX-20472-030T-11-LVDS-CABLES-25.html


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 10, 2014, 08:01:20 AM
Maybe this cable: http://www.cables-oem.com/html_products/I-PEX-20472-030T-11-LVDS-CABLES-25.html
Oh jejus, with that cable, we do not need a1398 eDP cable anymore!!! Why I coudn't think of this before! That is gorgeous. Need to find seller in Korea or China right now!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 10, 2014, 08:05:52 AM
Maybe that cable is for 20474-030e-12 and 20474-030e-11? Need to search it. Thx man!

-Add-
Ooops... Nobody sells for small number of cables..


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 10, 2014, 08:37:24 AM
Actually the suffix of "-12" refers to whether the socket has a Boss.

- 11 (No Boss)
- 12 (Boss)

I think the boss is just something on the socket that helps the plug stay fastened. All image searches I have done don't show any difference at all, plus a lot of the pages I have been to say that the 20472-030t will mate with the 20474-030e-11 or similar which suggests to me it will work fine.

For info on the suffix see this image - http://www.tonylabs.com/wp-content/uploads/i-pex-20474-0x0E-1-specs-1024x542.jpg

Also, see page 12 of the Cabline series datasheet showing the plug and connector together, here: http://www.daiichi-seiko.co.jp/cms_pdf/series/CABLINE_series_packege_E.pdf

Someone must sell these things on a small scale. I'll keep hunting out of interest.

-------------------------------------------------
Edit:

The dictionary definition of 'Boss' (non business person) is "a raised ornamentation" or "stub". This makes me think that the boss is actually a means to secure the connector to the PCB and nothing to do with the mating of the 20472-030t plug at all.

Also, if you look closely at the datasheet (page12) as linked above, you can see two little extrusions at the bottom of the connector which I'm willing to be are the Bosses.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 10, 2014, 09:09:05 AM
Thx very much!

Now I am contacting to the seller in alibaba.com. The seller can provide a small number of cables, but would be expensive.

I am asking them to make a 20cm cable.

I will let you know the price after the seller tells me.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 10, 2014, 10:21:45 AM
Wow... if I buy five, then it will cost more than 150 $ o_O...


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 10, 2014, 11:05:41 AM
Ouch!!  :o That's very expensive. I'm sure that there must be another device which uses these connectors that has a longer cable. What about one of the other apple products?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 10, 2014, 11:09:53 AM
Need to search further. If there is longer matching cable, let me know :)

But I found big problems, we do not know the pinmap. I do not know whether the cable is one-to-one mapping between two male connectors or reverse mapping..

I need to uncover the eDP cable first.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 10, 2014, 11:20:12 AM
Or use a multimeter to check for consistency. I've been meaning to do this actually. I'm at work at the moment but I might try this evening if I get a chance.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 10, 2014, 11:32:22 AM
We can ask dp2mbpr team. I will send them email with my poor English.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 10, 2014, 03:05:24 PM
That's a good idea. Your English is pretty damn outstanding by the way.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 11, 2014, 02:31:34 AM
No reply yet. The homepage is under construction. Maybe they are busy with MIPI display board for small FHD panels.

The chinese seller, he says that they can duplicate the eDP cable after they get the original cable.
Of course with longer length (around 20cm)..
Still negotiating price with the seller. If many guys are making this kind of retina builds, i can sell after i buy a bunch of them.
But as you know, nobody is doing retina build in the world. As far as i know, only you and me are working on this project (of course as a hobby? haha).


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 11, 2014, 04:57:26 AM
Finally, I've bought two extension cables from here : http://www.alibaba.com/product-detail/IPEX-20472-030T-HIROSE-DF19-30S_60046304780.html
The total cost is 144$, but I hope I should be worthy.
That is ok if i "inception" on myself that i bought the intuos 5 in very cheap price (300$) :)

By the way, the officer is really kind, and did her best job in negotiating with her boss.
Still expensive, but that is the only safe way to extend the cable.
It will take around two weeks.
If you need one spare, i will sell it to you :)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 11, 2014, 08:01:52 AM
I'm excited for you, it is a whole bunch easier than making adapters etc. Thank you for offering to sell me one, I might take you up on that depending on how successful my attempt at cable extending goes.

By the way I got the scart cable, I've cut it up to check inside, and I can report that there are 13 individual cables inside, 12 of which carry 2 wires per cable, and number 13 is single core - 25 wires over one cable. Actually, 25 might be enough if the pinout at mikesmods (http://mikesmods.com/mm-wp/?p=384) is to be believed, as 7 of the pins are used for ground.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 13, 2014, 01:29:25 PM
The scart cable cut open:

[attachment=1]

[attachment=2]

According to the documentation that came with the cable and the Ixos website, the cores are supposed to be made up of a solid copper core with a PVC casing wrapped in a aluminium/mylar shield surrounded by braided wire and a final layer of PVC. In reality there is no mylar shield and the outer wire doesn't appear to be braided - more running parallel with the core. I don't think it will make too much of a difference for my application but it's a bit of a shame that the company decided to cut corners; Presumably the company thought that they could use cheaper wires and not worry about being found out as the cables are so expensive and so completely enclosed that nobody would ever see inside, well Ixos, I'm on to you!! :)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 22, 2014, 02:56:37 PM
Well I think I got a bit excited about extending the edp cable to the MBPR screen, what with buying scart cable and pitch adapters (both arrived now by the way), and in my haste I sort of assumed I could just do it based on my trust in my own abilities. I think I might have gotten a bit cocky with things though and today I destroyed the edp cable while trying to remove the hinge that comes attached to it - I'll post some pics later on.

It's not a major thing really, I can get another, but they are expensive for what they are and I did have a perfectly good one until about 10 minutes ago. Ah well, I suppose it's good to be brought back to reality every now and again.

On the flip side, it has given me a chance to strip off all the tape to see all the wires and where they connect; I can confirm that the MBPR eDP cable is wired one to one! So there's that.

@Bumhee34 - Did you get your extended eDP cable yet?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 October 23, 2014, 01:53:49 AM
Not yet, the supplier told me that they finish their work at the end of this week (but not sure).

Sorry to hear that you broke down the eDP cable.

I thought that it looked difficult to remove the hinge. Actually, that's why I haven't remove hinge yet. The original plan was that it would be removed by dremel.

If you have chinese friends or frineds in china, you can buy eDP cable in very cheap price.

I guarantee that all ebay sellers buy the cables from china, and sell them at more than double price.

Check this link. It is less than 5 $. http://item.taobao.com/item.htm?spm=a1z09.2.9.77.QiGxgj&id=36591240246&_u=n1uufgjf0c28


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 11, 2014, 01:31:02 PM
As promised (albeit a bit late) the photos of the damage I did to my eDP cable, Doh!!

Successful removal of part of the metal hinge  ;D !!
[attachment=1]

Holding the remainder of the hinge in a vice and gently filing down the metal - All going well so far!!
[attachment=2]

Doh!!!! To much pressure at the wrong moment and the file went straight through the tiny wires breaking about 6 of them and damaging a few others.
[attachment=3]

For anyone considering doing this, I believe it could work well if you use a small file and take your time, but I would warn that you will need a load of patience if you are going to be successful.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 11, 2014, 02:17:12 PM
On the flip side of the above disaster it pressed me to really look into making a cable to replace this broken OEM eDP cable, and after much searching I discovered that the I-Pex 'PLUG' connector actually used by Apple in the MBPR is actually part of the I-Pex CablineCA series and is the 20524-130t (although you may often see these incorrectly sold as 20524-030t); Where 20524 is the model, the 1 (of the 130t) tells us that the plug has less than 50pins (if it was zero it would have 50), the 30t (of 130t) tells us that the plug has 30pins and that the part will be supplied in a tray.

The correct 'SOCKET' connector is therefore the I-Pex CablineCA series 20525-030E-02; where 20525 is the model, the 030E tells us that the socket has 30pins and is supplied as a part in emboss tape (whatever emboss tape should be), and the 02 tells us that the socket does not have a boss - two little dimples on the bottom side that sit in recesses of the PCB.

Searching for these parts as "Socket 20524 30pin", and "Plug 20525-030E" should bring up many more hits for parts than the previously thought parts 20474-030e-11(socket) and 20472-030T(plug). Though these parts are not members of the CablineCA series they are pretty much compatible. It should be noted that the 20524-130t plug is a very tiny bit tight inside the 20474-030e-11 socket, and I should also note that I haven't tried the 20472-030T plug in the 20525-030E-02 socket but I can't see much reason why this shouldn't work too.

So, anyway, after finding all this out I found a seller on aliexpress that can supply a long cable with the 20524-030t plug to a 30pin IDC connector of which I have purchased 2. Here's the link: http://www.aliexpress.com/store/product/Laptop-LCD-screen-modificat-to-LED-dedicated-an-LVDS-panel-line-20524-30pin-0-4mm-to/420320_1895438988.html

I hope to either join the IDC cables with header pins or cut the wires back and solder each wire one-to-one to create a new longer eDP cable. I ordered these wire 2 weeks ago so hopefully these should be in any day now. As always I'll let you know my progress.



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 November 12, 2014, 03:29:25 AM
If the new idea is ok to have long eDP cable, that will be great achievement.

I want to see your result soon!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 12, 2014, 10:34:18 AM
I hope it will work as I haven't left much scope for an alternative solution without spending shed loads of money. How are you enjoying you Retina build so far? Is there anything that you might have done differently if you started again?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 12, 2014, 12:56:11 PM
So here's a little bit more progress to report on how things are going with the contoured case. The magnets are securely embedded into the plywood and the holes have been filled! Further progress on the case is on hold until I know if it my method of extending the eDP cable works since this will alter where I can put the DP to eDP board; I don't want to start cutting holes and veneering until I know exactly where everything will sit.

Some pictures:

The magnetic shield pieces made from layers of Steel and Mumetal.
[attachment=1]

You can see here the magnet in the recess of the plywood, to the right of that is a plastic spacer (came with the magnets), and far right is the shield piece.
[attachment=2]

The plastic spacer rests on top of the magnet.
[attachment=3]

Then the shield piece sits on that.
[attachment=4]

Slap loads of glue-sawdust mix in the hole pressing it in to all of the small gaps and making sure that there is minimal space with no glue.
[attachment=5]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 12, 2014, 01:01:02 PM
Sand it all down level with the wood surrounding the former hole.
[attachment=1]

Spread some filler paste over to fill in the gaps left by the dried glue-sawdust mix.
[attachment=2]

Sand that down and re-apply filler to plug up tiny holes missed.
[attachment=3]

Sand that down for a final time.
[attachment=4]

Both holes plugged!!
[attachment=5]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 November 13, 2014, 04:39:41 AM
Is there anything that you might have done differently if you started again?

Not at all. Up to now, it is too perfect to me!

I love your case, it looks cool!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 30, 2014, 11:05:53 AM
Finally some progress to report on this build. I've received the eDP cables and have assembled them to make one long cable approximately 500mm long however, in testing the cable last night I confirmed my own fears that the length of the cable does infact matter and that 50cm is too long for reliable signal transmission to the screen. The other issue with the long cable is that the EDID data is getting messed up somewhere along the line and not advising the computer what the screen is capable of being driven to and so subsequently the computer tries to safely run it at 800x600 pixels. Here's some pics:

[attachment=1]

[attachment=2]

As you can see in the last picture the image on the screen is broken, partly due to poor resolution scaling and partly due to the absence of data at the screen end; Moving the wires around makes the picture fuzzy and can lose the picture altogether. At some stage (hopefully this week) I shall try to reduce the length of the cable perhaps down to 200mm like the cable Bumhee34 had made, at least this length has been confirmed to work.

Also as a side note, the screen is actually face down which is why you can see the LEDs on the top.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 December 01, 2014, 03:19:44 AM
EDP cable is like a baby. Too difficult to deal with it.

Hope you could get better results soon!!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca December 05, 2014, 11:03:37 AM
Ok so I've spent a great deal of patience fairly precisely cutting the cables back to 125mm each (to give me 250mm total cable length), and the wires have been stripped and tinned ready to be soldered together. Here's some pics of the process:

Chopped:
[attachment=1]

Spread to make it easier to strip the wires:
[attachment=2]

Wires tinned:
[attachment=3]

Both wires ready to be joined:
[attachment=4]

I'm just waiting on some 0.6mm 2:1 heatshrink to arrive before I proceed with the joining of these wires, but this is my progress so far.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca December 12, 2014, 09:40:42 AM
The wires have been joined (see below) but there is still an issue with the picture based around the fact that my computer will not change the resolution above 800x600! Originally I thought that this was because I had a poor quality displayport cable (there's tonns of info about non-standard cables out there), however last night I discovered that I made a mistake and had mixed up the wiring of two of the 30 wires that dealt with backlighting, and that at least two of the wires are poorly soldered. I think I will need to make a tester to check the continuity of the wiring before I proceed.

As things stand this is not as successful - so far - as I had hoped.

[attachment=1]

[attachment=2]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 December 13, 2014, 08:44:42 AM
Waiting for good news!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca December 24, 2014, 11:22:38 AM
Well with the limited free time I've had I've been working on this flippin' cable trying to get some kind of workable life from the screen. I've chopped out the heat shrunk section pictured previously as it became clear that too many poor connections were present, and reduced the length by a further 50mm to bring the total length to 200mm (same as Bumhee34). Each of the wires was twisted together with it's partner prior to being soldered and once again heat shrunk - I went for green heatshrink this time just because.

Last night I tested the cable hoping for a perfect picture, but was once again greeted by a broken image at 800x600. This problem was driving me crazy, I knew that all of the connections were good on the cable - I tested them all for continuity without flaw, I also knew that the cable is definitely one-to-one in it's wiring and that I had wired them all correctly - triple checked! I got so frustrated with it that I spent an hour or so manually re-soldering all of the contacts on the DP2MBPR controller board to make sure that there were no breaks or dodgy solder points, and used a PCB macro camera to view every inch to make sure - All was good.

After ruling out everything that I could think of the last thing I had left was to check the continuity of the ground between the Ipex connector on the TCON of the screen and that of the DP2MBPR board; I truly believed that this was a fruitless task since at least one of the wires in the cable should be grounded. Lo and behold, joining a wire from the chassis of one connector to the other (and rebooting the controller board) was enough for Windows to recognize the full resolution of the panel!! I could see - for the first time - the screen in ' some of ' it's high resolution glory. Now I say ' some of ' since the picture was flickering and there was a whole bunch of noise in the signal, but that's OK as non of the wires are shielded against any kind of noise yet so it's to be expected, the important part was that the screen was at the right resolution and working. I have now begun painstakingly lining up all the wires and wrapping them in shielding tape (I've completed half so far), once this is done I believe that I should expect to see a perfect picture showing of the retina panel in full glory!

Oh, and you may remember that I had experienced some problems with the controller board not working correctly - flashing blue light and backlight flashed on and then off - well it turns out that a single LED package on the backlight strip had slightly pulled away from the FPC strip causing intermittent contact, holding the LED down to the FPC got the strip working perfectly. I believe that the Rozsnyo controller has some circuit protection that is triggered by under current and shuts off, which is why the backlight would flash briefly. I've re-soldered this LED package this morning and I will test it when I get home to check it's working alright.

Whilst I'm on the topic of the controller I have had one weird thing happen, the RGB LED would be solid Green when the screen and backlight were turned on before however, now it's solid White. I find this slightly baffling as all other function colours remain the same as before; ultimately It works fine and is probably due to a glitch in the atmel code. I might see if Rozsnyo might be good enough to pass this code on to me as I'd quite like to tweak it slightly, that's for another day though.

All in all persistence appears to be paying off. Fingers crossed that the shielding of the cable will solve all my problems!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 December 26, 2014, 02:15:01 AM
Great news!
Looks we could see the results very soon. Cheer up!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca January 07, 2015, 04:48:31 PM
Success!! Finally!!  :D

I have finished shielding the cable and after a few tests I can confirm that the shielding worked! There are no artifacts in the image whatsoever - even when playing fast action movies - and I can obtain the full resolution and refresh rate no problems. As always, more pictures:

Almost done covering this thing in tape:
[attachment=1]

Just another piece of tape to put over the length to complete it - sadly I didn't take a photo of the completed wire. It took me some serious time to line up all the wires and shield the LED power from the data lines (not entirely sure if this was necessary but I didn't want to take any risks!):
[attachment=2]

The precarious testing setup:
[attachment=3]

The reason for the lamp in this setup is partly due to my LED backlight strip being faulty. I was unable to fix it and damaged the tiny LEDs whilst trying, a new strip is on order. This image shows one series of LEDs not working  :( :
[attachment=4]

And finally the working image:
[attachment=5]

The picture looks terrible because I am using a perspex light guide from a 24" panel that has a Hexagon pattern on, no diffuser or reflector sheets, and a 40cm ruler to stop the dodgy setup from collapsing - If you look not too hard you should be able to see the ruler through Big Buck Bunny!

Despite the poor arrangement, I can clearly see the crispness of the image and can't wait to get this thing put together - Hopefully some quicker progress than in recent months would be nice! 
 


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca January 07, 2015, 10:01:36 PM
Well this is typical isn't it. Today after posting about my success, I sat down and began looking at repairing my sisters Ipad 2 that she killed by dropping it in the bath. I removed the smashed digitizer from the front, took out the LCD and began removing the battery when, I noticed to my supprise, a cable that looked very familiar:

[attachment=1]

I took the cable out of the Ipad and inspected it more closely. It's about 130mm long and has the desired Ipex connector at each end, a bit of continuity testing later and it appeared to be wired on-to-one as I hoped:

[attachment=2]

A leap of faith later and I decided to plug it in between the Rosznyo controller and the A1398 LCD panel. Lo and behold it only works perfectly!!

[attachment=3]

This little cable actually has nothing to do with the display within the Ipad2, it connects the chassis switches and the camera to the motherboard. A quick browse on ebay and it would appear you can pick these little cables up for a tiny £5 including postage from within the UK!!! (search - "iPad 2 Motherboard Cable"). I will be buying one of these to give myself a bit of flexability when I come to fitting the bits together later down the road, I just wish I stumbled on this about 2months ago. Nevermind.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca January 07, 2015, 10:22:50 PM
And just because I thought it would make for a nice bit of reference, heres all the wires next to each other for comparison:

[attachment=1]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 January 08, 2015, 03:03:12 AM
Oh......Wow..
You found a new eDP cable, and it's so cheaaaaaap!!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca January 08, 2015, 07:50:33 AM
I know right; Sometimes you can research something for days without any real success, and when you least expect it a solution can just drop in you're lap - A cheap solution at that. It's great to have found it but a little frustrating after having spent many hours trying to manufacture my own.

The next step then for me is the one I'm dreading most, cutting the recesses for the backlight, LCD, and cover glass. This might take a little time as I want to make sure I get it right.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca February 03, 2015, 11:59:07 PM
Well actually I didn't cut the case yet - I think I'm putting it off for fear of failure - however I have been working on quite a few other bits which I will briefly share here. I'll cover the latest update with images and blurb so that I don't write too much and waffle. Here it goes:

[attachment=1]

1. Shows the DP2MBPR controller board highlighting where I wanted to cut the corners so that the controller would fit tightly to the edge of my chosen Hammond 1590BB case.

2. The corners cut back.

3. Mounting of the board in the Hammond case. Also showing an hard to find female panel mount to panel mount short DP cable.

4. Trimmed off the 'ears' of one end of the panel mount to panel mount cable since they were not needed.

[attachment=2]

5. I sourced a male to male DP adapter so that I could connect the DP2MBPR board to the panel-to-panel cable. Trouble was that this adapter would not fit in the Hammond 1590BB case, so the case had to be ditched in favor of a bigger one.

6. The new case. The Hammond 1590DD ............ case (I forget, I'll fill this in later).

7. Adhered printout of the areas that needed to be cut out for the DP socket, The DC power socket, and the power and brightness switches/buttons.

8. The holes are cut for the power and brightness switches and the switches have been inserted.

[attachment=3]

9. Back view of the switches as per 8.

10. The holes are drilled for the buttons into the side of the case and the switch panel is screwed into place.

11. Using the template shown previously, all holes are cut out.

12. The DP2MBPR board is mounted, the male to male adapter is plugged in and connected to the panel mount cable which is screwed in place. This shows how things inside the case will be arranged.

[attachment=4]

13. I need to take a bit of a step backwards here. I have been suffering some problems with the DP2MBPR board whereby the backlighting would shutdown the board at maximum brightness. Part of the issue was related to a fault with the inductor (a.), and a replacement slightly higher current inductor (b.) was soldered in it's place. This worked for a short while until the board just would not respond at all.

14. A macro PCB camera that I have at work revealed that two pins on the LED backlight chip were not soldered to the PCB as they should be - Circled in Yellow. These two pins are on the chip highlighted in green in image 13 (c.). They are very tiny, I couldn't see that they were not correctly soldered with my bare eyes.

15. Successfully resoldered the two pins! The board is fully working without any issues - the first time since I got it.

16. The wiring of the panel buttons to the DP2MBPR board.  


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca February 05, 2015, 02:44:22 PM
After wiring the switches to the board It was clear that the switches I had chosen had some 'bounce' to them, registering at the board as quick and multiple button presses - Bounce = imperfect contact with the switch terminals which causes spikes in the switch signal as if the button was 'bouncing' quickly. To resolve this I used a simple circuit on each switch that smooths out the 'bounce' and causes the switch to behave as expected.

[attachment=1]
Here you can see the simple circuit on each switch. 1uF electrolytic capacitor in parallel with switch terminals - the board uses a common ground so negative side to ground - and a 20K resistor in parallel with a diode connected between the positive pin of the switch and the positive source from the DP2MBPR board.

[attachment=2]
Heat shrink wrapped around them to keep things neat.

[attachment=3]
Switches mounted.

[attachment=4]
Next up cutting a hole for a power switch which I'm off to do just about now.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca February 05, 2015, 04:05:15 PM
Doh! I made a silly mistake with my debounce circuit that keeps the capacitor charged and spikes a signal when power is applied to the DP2MBPR board. I'm addressing this currently and I'll explain more once I've got my head around it.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca February 10, 2015, 03:02:56 PM
Ok, I've sorted the issue. Here's a diagram of the two mistakes I made before finally getting it right, doh!

[attachment=1]

Diagram A.
-capacitor charges through the diode ok, but is shorted by the switch. the resistor is redundant.

Diagram B.
-capacitor is charged directly.
-as the switch is closed the capacitor discharges in combination with the source 3.3V causing a spike of voltage greater than 3.3V to ground.
-the diode is redundant.

Diagram C.
-capacitor is charged through the diode to allow quick charge.
-as the switch is closed the capacitor is discharged slowly (relatively) through the resistor so that the 3.3V source is kept high during the event of a bounce, causing the source 3.3V pin to only detect a single switch to ground.
-The additional 20ohm resistor at the source is to protect the diode from thermal runaway - a probably over cautious addition given the application.

The capacitor values changed from A. partly due to a change of mind about how long to delay the discharge and partly due to a lack of 1uF capacitors. The typical bounce is about 0.03s, circuit C. gives a 'total' discharge time of about 0.2s - perhaps a bit long but it works fine.

time constant t=RC, t=4700 x 0.00001 = 0.047s
the total discharge time is about 5 x t = 0.235s

Maybe somebody can clarify this, but I believe that the digital IO pins on atmel chips have a low-pull threshold of below 2.5V. This would mean that the actual debounce delay (t), based on keeping the voltage on the pin above 2.5V would be:

t = -ln((V-Vf)/V) x RC     where V is the source voltage and Vf is the final voltage (the voltage you are looking for).
t = -ln((3.3-2.5)/3.3) x 4700 x 0.00001
t = 0.066s

If it is the case that the threshold is 2.5V, this is perfectly long enough to eliminate the noisy contact of the switch. Either way I'm happy with the way it works now so that's that.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca February 12, 2015, 01:32:26 PM
More pictures! Switch attached and controller box finished. I've also included a picture of the 'debounce' components attached to the switches so you can see how I have them arranged. A quick note about the power switch, I didn't consider the location properly before I cut the whole and fitted it, so you may notice that it is not ideally positioned for easy access. I am considering moving the switch to the side of the enclosure but for now it can stay where it is.

[attachment=2]

[attachment=1]

As you can see I'm still planning on using the Cooler Master laptop stand.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca February 19, 2015, 11:17:49 AM
Reminded by a post I left on shugs1981 build log I realised that I had not posted about a recent purchase, let me back track a little though. So I think somewhere I mentioned that I had managed to get my hands on a broken macbook pro 15" (non-retina) screen for free - if I didn't, well, I got one - however, I recently took this screen apart to get to the backlight diffuser and reflective sheets and found that there had been some water damage through the reflective films which had ruined them, and on-top of this I realised that the dimensions of the diffuser were not going to work out for this retina build, so that was it the screen was binned (and partially salvaged for my scrap box).


The broken macbook pro 15" (non-retina) screen before dismantling:
[attachment=1]

Thinking about bumhee34s build I considered that it might be worthwhile getting myself the backlight components meant for the 15" macbook pro retina panel, since after-all I've come this far and spent a bunch of time I might as well get it to be the best I can. So, by some chance I scanned ebay and stumbled upon a smashed full assembly a1398 panel which I scooped up for a modest £40 (inc P&P), see below:

The broken MBPR A1398 full assembly screen:
[attachment=2]

As you can see the screen is most definitely broken. Next step the removal of the TFT glass!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca March 03, 2015, 01:15:13 PM
Ok, so removal of the oem tft glass from the Apple MBPR A1398 chassis is impossible without destruction of the panel, and wow did I destroy it! The adhesive that holds the glass down is particularly strong, and even with a heat gun and gentle pressure it just didn't want to know. I have therefore abandoned using the broken tft as a template for the cutting of the hole and will resort to tracing around the working tft with a pencil on some cardboard - Oldskool!! The backlight diffusers and light guide are all undamaged though - Phew!

I moved house recently so hopefully I should be able to get this project properly going again soon!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 March 04, 2015, 02:25:10 AM
Yeah, it is almost impossible to disassemble the top cover of a1398. But luckly, you got the undamaged diffuser!
Hope I could see the final result soon!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca May 13, 2015, 08:37:41 PM
Right, well it's been a really long time since I posted about this build, or indeed did anything towards completing it, but I recently found some time to crack on with a bit more so here's what's been happening:

I hadn't done any woodwork on this project for a while, so I let the mood take me and decided to glue the end pieces on to the contoured shape so that I could start taking serious measurements prior to the final counter-boring for the screen parts.

An end being held in place and glued - The ends were veneered many many months back with the smoked eucalyptus, I'm pretty sure I documented that........?
[attachment=1]

Cut the excess of by hand prior to routing - lovely wobbly edge.
[attachment=2]

The router jig - cobbled together with an old shelf some scraps of pine and a couple of g-clamps.
[attachment=3]
A keen eye will spot that the veneered end being held by the jig is decidedly un-wobbly. I realised prior to powering up the router that there was too much excess, so I removed the piece from the jig to cut it by hand but not before taking a photo.


The routed piece - a lovely close-up of one end showing off the beautiful wood veneer.
[attachment=4]

Another veneer shot showing how well the shaped wood hugs the Wacom.
[attachment=5]

With all the careful clamping, gluing, drying, cutting, and routing it's taken about a week just to do this much - also I've had to do as much as I can in my lunch breaks as I no longer have a work space at home :(

After writing this I shall be taking loads more measurements in preparation for making the first holes for the backlight, screen, and top glass, and I hope to crack on with actually cutting in the next couple of weeks (access to workshop permitting).


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Drewid June 02, 2015, 09:41:32 AM
Nice fit. :)  I'm not surprised it took a while to do.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 22, 2015, 05:26:59 PM
@ Drewid: Thanks (apologies for the delay in response!)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 22, 2015, 05:48:01 PM
As with so much in life I seem to have got waylaid with various bits and pieces and partially shelved this project tinkering only on aspects that did not require much space or time, and not updating my build log - Bad Aerendraca.

One such aspect was development of an idea I had a very long time ago (pre-microcontroller knowledge) to try to incorporate some kind of hotkeys. Inspired by the OLED screens on the Intuos 4 I decided I'd like me a bit of that for the Serenitiq2 and have been working on how I might hope to achieve this.


Here's a quick whirlwind recap of progress so far:

First up then was to find an OLED screen that was either big enough that it could be used for several buttons (much like the 2 OLED screens in the Intuos4) or small enough that each screen would be it's own button. Without getting super geeky and boring you with various trials and fails I'll skip to the chase; The screen I settled on in the end is a small 128x64pixel 0.96" White OLED module (OLED panel number is UG02864HSWEG01 for anyone interested).

Next was to get it to display something to check it worked ok: all tested and worked well but simple shapes and images were boring and meaningless, what to do?

Get obsessed with making your own stylized icons to match those in photoshop!! This was an absolute labour of love, painstakingly upscaling 32x32pixel greyscale images to 64x64pixel monochrome and tweaking them to make them look nice.
I'm about 40% done converting the images to usable icons and when I have some more time to kill I'll do some more, but for now I have enough for testing.

10x more OLED screens arrive from China!!

The idea is to have 9x OLED screens (acting as buttons) running down the left side of the tablet overlay, which will be embedded in the plywood and set behind the topglass. Each of the buttons will be modified to incorporate projected capacitive touch so that the buttons will work through the glass. I'll go into the technicality of this in a later post.

For now I can share my success at running 9x OLED screens with 9x stylized photoshop icons from an Arduino nano (clone) using 12x I/O pins - here's a couple of images. I hope you like my Photoshop icon reimaginings:

[attachment=1]

[attachment=2]

I'll try to update a bit more regularly in the future as the forum seems to be a little slow these days, I think people need some inspiration!!


--------------------------------------------------------------------------------------------------------------------------------------
Arghhh!! I just noticed that the brush icons I've used were the old ones with the long handles. The new versions are more or less the same as the 3rd brush of the top row with the shorter handle. This sort of thing really bothers me.........annoying.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: XDjackieXD July 22, 2015, 06:28:32 PM
This looks REALLY nice!
My first idea would have been one of these displays:
(http://www.adafruit.com/images/1200x900/931-10.jpg)
I think they could cover 2 buttons.

Do your displays not support greyscale?
I have some a bit bigger (I think about double the size of the ones you have) OLED screens at home and they support 4-Bit greyscale.

-Jakob


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 22, 2015, 10:26:52 PM
Thanks. No the displays that I've tried and the current one I'm using are monochromatic only, but I don't mind too much as it turns out you can get quite creative when you're limited to pixel on/pixel off, plus I'm delighted with the icons so far.

For information the other screens I tested were:

128x32pixel ~0.8" SSD1306 - Really tiny screen but the vertical pixels were too few; this screen got me started though.
128x64pixel 2.42" SSD1309 (panel was UG-2864ASWPG01) - this screen was a great size but not for a resolution this low, images were blocky and I'd originally thought of using this for four buttons too!
128x64pixel 1.3" SSD1106 (not sure of panel) - Nice looking screen made by HelTec with a good resolution and brightness for it's size: a little too big for buttons.
128x64pixel 0.96" SSD1306 (panel is UG-2864HSWEG01) - Another HelTec screen. This one is a great size for buttons and the resolution for it's size is awesome. This is the screen I went for in the end for about $2.50 per OLED module if I recall correctly.

I did look into trying some 4" and 5" oled panels that supported greyscale x16, but decided that the screens were too large for the resolution (256x64pixels) and their physical thickness would have cause problems with the case design so they were abandoned, besides, I think the simple white on black will look stunning against the smoked eucalyptus and glass anyway so I'm happy with my choice.

By the way I suspect there was supposed to be an image attached to you post but it appears to be awol.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: thatcomicsguy July 23, 2015, 01:40:46 AM
Those display buttons are really neat!

Having the ability to swap graphics and functions between applications..?  Gosh!  When this project is done, it's one of those in which there is an inbuilt frustration; "Everybody needs to know this exists!"  But how do you shout a graphics tablet from the rooftops?

Looking forward to the final product!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 23, 2015, 06:33:00 AM
Thanks thatcomicsguy.

It could be possible to implement icons and functions between applications for sure, although an Arduino controlling it might be a bit ambitious: Perhaps aRaspberry Pi?

One thing at a time though; I need to focus on a few things before I get more carried away with very cool ideas!

I'm probably going to get a chance to play about with some of the touch stuff today, so if I do I'll post what I find (hopefully success).


@XDjackieXD: That 128x32 adafruit screen was the first screen I tried! Like I said before, the height just isn't quite enough for decent sized icons; they should have made it 64x64 instead, that would have been fantastic.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 July 23, 2015, 08:01:12 AM
Very cool


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 23, 2015, 10:30:33 PM
I finally got up enough courage to go for the first cut today!!! It's a bit rough as it's the preliminary removal of excess material prior to clean cutting the edges. This will be the recess for the TFT backlight - see images below:

[attachment=1]
The very first cut to break my nerve and test depth of cut.

[attachment=2]
Happy with the depth I removed more of the plywood taking it close to the boundary ready for a finish cut.

Some of you may have spotted that I have gone over the line with a semicircular cut on the bottom edge, this was a mistake, ahem...... I mean, it's a feature, yeah sure it adds a certain uniqueness. :)

I may get some time tomorrow to tidy it up and recess for the TFT too so I can test it in place, here's hoping!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 27, 2015, 05:19:37 PM
I got a bit of a chance to do a little bit more today. The cutout has been sunk a further two millimeters and is now a total depth of 6mm (previous pictures showed 4mm), and all barr the top edge have been cleaned up to make them lovely and straight(ish). I really need to have the actual tft glass in position before I go ahead and trim the top edge to make sure that I don't trim away too much, so if I remember I will bring in the tft glass tomorrow and have a bit of a play with the dimensions. Once the dimensions have been decided I will trim the top edge back and begin sinking the border of the active area to sit the tft glass.

The drop for the tft glass should be about 3mm - maybe a little more for adhesive tape.

Here's the most current progress:

[attachment=1]

Image shows the backlight acrylic slab sitting in the hole with the LEDs on the top edge and the TCON board of a broken A1398 tft to give some idea of positioning.

[attachment=2]

Same thing, different angle.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 July 28, 2015, 07:10:59 AM
This will be definitely the master piece of a DIY tablet.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 28, 2015, 05:39:24 PM
Thanks bumhee34, I certainly hope it all comes together and is both beautiful to look at and functionally sound.

I don't know what the matter is with me at the moment, I finally seem to be getting quite a bit of time to tackle this project. Here's the latest progress report and it's a good one!

The recesses are mostly done and a testing to check everything fits in place also done; just the cutouts for the OLEDs and TCON board to go (more on that later). As always pictures, pictures, pictures:

[attachment=1]
Recesses complete (mostly).

[attachment=2]
Screen and backlight placed into recesses to check everything fits nicely. It does!!
 
[attachment=3]
First power on showing some google image search.

[attachment=4]
View of Corel Draw X6 with some pretty coloured image; I don't use Corel Draw but it was the only art software available on the computer I was using at the time.

[attachment=5]
A side view showing the same picture as in the previous image albeit slightly larger.

The backlight has not been properly positioned and some of the filter sheets were missing which is why the image may look a bit bright/dim in places; the bubbles on the surface are due to a protective film. Overall I'm delighted that it all lines up so far. Next test is to check that I've put the screen in the right place for the active area of the Intuos4. Here's hoping!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 29, 2015, 10:33:57 PM
A few decisions made today and some more routing done. I have decided to go for a 7Left and 2Right OLED setup for my shortcut keys to keep the space on the lower right side free to rest my hand (I noticed I tend to rest it alot). I also have plans to add another control underneath the two right side OLEDs but this will be dependent upon the physical size of the control - I'll talk about this more once I have received the part for testing.

More pictures:

[attachment=1]
This is a quick and dirty render of what I expect the finished thing to look like (more or less).

[attachment=2]
The above image was based on this picture of my physically laying out the OLED screens to see how they would fit.

[attachment=3]
Pencil outlines were made ready for routing.

[attachment=4]
OLED recesses routed!

[attachment=5]
OLEDs plonked in the holes to make sure they fit OK.

Things are moving on quite swiftly at the moment and I'm pleased with progress so far.

The weight of the plywood contour has reduced significantly with all the routing; it's probably about half the weight it was. This weight reduction will be countered later on when I've got the protective glass and all components are fitted though; I reckon for the size of glass I'll need (248mm x 478mm x 2.5mm) that the glass alone should add about 740grams, so the completed overlay will be no feather light device that's for sure.

As a little side note, I decided on 2.5mm cover glass since this will form a point of rigidity for the entire overlay so it needs to be able to take some small amounts of stress.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: XDjackieXD July 31, 2015, 03:55:20 PM
You are very good at constructing cases  :o

The displays I have at home use the SSD1329 controller (I got about 5-6 of them out of a batch of thrown-away prototypes of a GPS tracking solution).
They support 4Bit monochrome.

What did your build cost about so far?

-Jakob


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 31, 2015, 05:55:54 PM
Thanks, although it's not done yet.

Oooh, they have a resolution of 128x96! Nice. I might have to see if I can find some of these somewhere for a portable Geiger counter I want to make at some point; one of these would look awesome.

Hmm.........How much has it cost me to make so far..........Hmmmmmmmmmmm.......... Quite a bit of money and a load of time! As a very loose guess I would say somewhere around £500 for this build (not including the LVDS controller I bought for the screen I was going to use originally).

I don't consider the cost to be too much though, since as this is a hobby that's been running since January 2014, I work that out to be costing me about £26 per month for something I love doing. This is also not to mention the skills that I've picked up along the road: I had never used a router before, I had never laminated plywood, I had never made a laminating form, I had never made or used a vacuum bag, I'm new to most of the electronics I've been using and plan to use, and I've learnt a whole bunch of various bits of software so that I could come up with the design in the first place. There's also subtle skills that you pick up along the way such as creative thinking and reasoning, problem solving, optimising measurements and thinking about margins of error, learning about and using different materials, and knowing when you need to step away for a while to recompose yourself.

I guess what I'm saying is that a DIY Cintiq could cost you as much as you are prepared to chuck at it and perhaps even end up costing the same as an actual Cintiq, but would you have as much pride and sense of accomplishment from saving for a couple of years and buying one of the shelf? I wouldn't!! I'd love using it but not the waiting part.

Well that all turned into a bit of a motivational speech - sorry about that - however, on the flip side if my lovely girlfriend should ever read this: See, it's quite a cheap hobby really and I still have enough money at the end of the month to put some aside for buying a house someday! xxx ;)




: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 31, 2015, 06:07:51 PM
A little bit more update on progress to date. The routing for the TCON board of the TFT panel is complete, see images below:

[attachment=1]
The TCON board is tucked nicely  away from the top of the case.

[attachment=2]
View of the TCON recess from the bottom - loads of room for wires and shielding.

[attachment=3]
All the screens together.

I have also ordered a piece of 2.5mm TruView conservation glass (248mm x 478mm) which will be the protective glass layer; I don't really need the UV protection that the conservation glass offers, but I was unable to find regular picture framing glass of 2.5mm thick and I'd calculated that this should be the optimal thickness for this build so I was not happy to go for 2mm.

I've never been so excited to be expecting a delivery of glass over the coming week! Things might go a bit slow again until I receive the glass as all the next bits require it.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: XDjackieXD July 31, 2015, 07:10:30 PM
Maybe I will start a similar project in the future if I can get my hands on a cheap Intuos... (I have all the tools required. Basically everything you need for wood & metal work and an electronics lab including a cnc mill, a lathe, soldering stuff, ... :P )
The problem is I want something big (about 24") as I already have a 13" Cintiq but I only have some 13" penabled digitizers and an Intuos 3 A5 at home and cheap, bigger Intuos' are rare  ;)

If you need help with software just ask  :D

Thank you for all the information!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 31, 2015, 11:02:37 PM
You're welcome and thank you for the offer, I may need to take you up on it at some point.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Jksukino August 02, 2015, 11:42:33 AM
i had a lot of trouble trying to fit everything inside the original tablet but using wood is just amazing. It looks really great and sturdy :0. Nice going.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 02, 2015, 10:30:01 PM
Thanks Jksukino. It's surprisingly sturdy given how much wood I've routed away. Once the glass is on I hope that this will add an additional layer of rigidity, hence 2.5mm thick glass.

With any luck the glass should arrive this week. It's all coming together now and getting quite exciting. I should probably note here that there is still a ton of stuff I have to do so it's not like the finish line is just around the corner.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 August 03, 2015, 05:48:05 AM
You should start a business :) Kickstaters will definitely love this hehe


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 03, 2015, 06:47:37 AM
That's very kind of you to suggest, but I think I would have to speed up the manufacture process somewhat to turn this into a workable business.  :D


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 03, 2015, 03:31:41 PM
Well the glass has arrived in super quick time! (*they quoted 5-7days on their website, I only ordered on Thursday - *they being www.bramptonframing.com) - credit where it's due!

No cutting or anything done today but here's some shots of the new glass; I think you can see it coming together now:

[attachment=1]
The 0.07mm is from the plastic the company wrapped the glass in, so 2.5mm it is.

[attachment=2]
Side profile so you can see how it compares to the edge of the case; the edge of the case is 8mm as shown but this will soon be trimmed down by 2mm for the glass to be sunken in.

[attachment=3]

It fits perfectly and the thickness is bang on!! Kudos to the company that cut it, excellent job, all edges smoothed too.



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 31, 2015, 09:33:40 PM
Once again I've not had much time free to really get my teeth into this so this is only a small progress report, hopefully I'll get a bit more time in a week or two and make some serious headway then, but for now:

Some additional routing was done to level off some of the less than level cuts I'd made, and to make some adjustments for the parts to fit in with more ease; The shelf at the top of the screen recess where the tft ribbon cables ducked to the underside was removed as it was causing tension on the ribbon cables once the parts were in place, removing it also gave additional space for a heatsink plate to be added (more on this later).

the parts of the chassis that will hold the tft and small oleds was then painted black so that the inner parts cannot be seen through the glass once the case is finished.

[attachment=1]
painted bits as per above.

[attachment=2]
the recess was cut for the cover glass and the glass fitted to make sure it's a good fit. This image also shows a mock up test of how the veneer and white plastic strips will sit. I think it should all look good once it done.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 09, 2015, 01:10:18 PM
This is more a post to show that there is still some life left in the forum, and that I'm am still working on this but the bits I'm going at the moment are slow, boring and dull - lots of filling, waiting to dry, and sanding. I would post pictures but to be honest visually there's not much to see, it's just a bit of leveling off and tidying up; once I've completed this bit I'll maybe post some images. Rest assured that it is still coming along nicely.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: woodguy32 September 09, 2015, 03:18:45 PM
Yea.. i totally understand.. Every Woodie Hot Rod build I had so many hours in sanding and blocking.. wow is that ever boring..but it must be done..

 Looking awesome..its a shame that not much going on in the building of these cool drawing devices..once you use one you never go back to a mousy around..

thanks wood



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 09, 2015, 04:18:56 PM
Woodguy32, Can I pick your brains?

I'm thinking of finishing this build with a top coat of polyurethane gloss, since you appear to be a bit of an expert at getting a beautiful finish on your wayback devices I was wondering if you thought this was a good choice? perhaps there's something you know of that is better/more hard wearing?

An instant advantage of polyurethane that I can think of is that I already have an unopened pot! :)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: woodguy32 September 09, 2015, 06:23:43 PM
I am a big fan of spray lacquers and automotive clear coats… well they are fool proof and easy to apply and dry really fast..plus if ya goof up, just wet sand and reapply..

Dust will be your worst problem with slow drying finishes..

 but i use spray can clear lacquer all the time on wood.... super fast, cheap and easy..

 but since you have the poly..use it.. secret is let it FLOW..

 wood



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 10, 2015, 04:20:49 PM
Thanks for the tip! I'm not there yet anyway so I have some time to mull it over.

Most of the filling and sanding is done now so here's a few pics of how it looks so far. There's still lots of cleaning up and painting etc to go though so it still looks a bit rough:

[attachment=1]
A quick check that the plastic strips sit in their recess low enough to be almost flush with the veneer. All good.

[attachment=2]
The strips glued in place with the glass in situe, all fits together well.

[attachment=3]
A sneak peek of the OLEDs under the glass.

I hope to veneer the top edges tomorrow if I get the chance; more pictures if this happens.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 11, 2015, 09:57:12 AM
The veneer is in the vacuum, I'll give it a few hours and see how it's gone - pictures later.

[attachment=1]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: XDjackieXD September 11, 2015, 03:25:36 PM
Looks really great so far!
I probably wouldn't have the patience to build something complicated like this :3
I guess your hotkeys will be capacitive ones (because glass is on top)?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 11, 2015, 04:13:50 PM
Yeah, at least that was the idea although I'm having some problems with that at the moment - nothing I can't work out though.

here's the pics of the veneer complete (but still needing cleaning up):

[attachment=1]
[attachment=2]
[attachment=3]
[attachment=4]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: XDjackieXD September 11, 2015, 04:48:17 PM
W. O. W. O_O
This looks absolutely amazing!

If you need help with touch and AVRs/Arduinos feel free to ask.
I wasted days with this stuff :P


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 September 12, 2015, 06:28:37 AM
This is totally crazy! Gorgeous...!!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 12, 2015, 12:09:24 PM
Cheers guys. I'm very happy with how it's turning out so far.

With the veneer on I've changed my mind about top coating it with polyurethane, the grain is too nice so I think I'm going to use a good wax instead. I can't wait to get this thing finished now, I wasn't sure I'd ever make it this far, the encoragement really help, thanks again.

XDjackieXD: I might well need some help with coding the arduino, thanks for the offer.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: XDjackieXD September 12, 2015, 12:48:41 PM
XDjackieXD: I might well need some help with coding the arduino, thanks for the offer.

No problem! I'm glad if I can help :3


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: woodguy32 September 12, 2015, 03:06:25 PM
Lookin Awesome..

 I go with a danish oil or tung oil for the finish on the wood veneer then wax..   foolproof  and easy.plus a nice sheen look… not a big fan of supper gloss plastic looking wood... you can let it dry and 0000 steel wool it  and coat again..  Danish oil maybe better.its thinner..


wood..


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca September 12, 2015, 04:08:50 PM
Excellent detailed tip, thanks so much!


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 26, 2015, 08:24:45 AM
I wish I was posting some more interesting news, but hey it is what it is. Since I posted last I have been waiting on a 0.4mm pitch to dip adapter board from China so that I might use an IDE cable to join the screen and electronics to the controller boards. Well this turned up after a months wait but it was the wrong board, the company sent a 0.5mm board. So I'm playing the waiting game at the moment until the correct board is received.

It's a pain because the adapter board needs to be in place before I can work on the cooling for the LEDs. So much waiting.

---------------------------------------------------------------------------------------------------------------------

I decided to hunt down another seller of the same board and have ordered a few from them as the other company seems to be taking ages to respond to messages; I'm sure I'll find a use for the additional boards if they ever do arrive.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 26, 2015, 03:21:32 PM
By way of an excuse to post something more relevant, here's an overview of how things will be connected in diagram form:

[attachment=1]

The IDE cable will be the main connection between the tablet overlay and the connection to power and the computer. Both the screen and the USB power & data will be fed through the same IDE cable; The IDE cable should be sufficient to send the data required for the TFT panel without loss although it may need to have some shielding tape wrapped around it.

The Arduino will be almost maxed out controlling the 9x OLEDs, 2x Capacitive breakouts (each capable of 12 touch buttons), a haptic motor driver and vibration motor, and a haptic clicker (it's really a small speaker but I'll have it clicking when a button is touched). The Arduino will also be sending HID data to the computer for the capacitive touch buttons to act as hotkeys; I may add more buttons in the future (there's certainly plenty of scope and spare resources). Coding is yet to be done, but I've got each part working independently so I should think this will be a straight forward task.

So I remain waiting for this adapter board, in the meantime perhaps I will work some more on the electronics....... 


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: DaBotz October 26, 2015, 07:45:03 PM
I read a scant review on an Huion tablet with capacitive buttons - essentially, it appears that they "click" simply when the index enters a button area, before an actual touch.

Have you had any issue with this?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca October 26, 2015, 11:01:23 PM
This shouldn't be a problem with this setup because the key activation occurs before the click, so it should only sound if the button had been fully touched and not otherwise. Interestingly when there is not vibration or 'click' noise, the touch of a capacitive button feels disassociated and odd; The 'click' on it's own is nice, the 'click' and vibration together feels right.

We'll have to see how it all goes when it's all put together though, perhaps I will have issues then?


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: DaBotz November 09, 2015, 07:39:25 PM
Interestingly when there is not vibration or 'click' noise, the touch of a capacitive button feels disassociated and odd; The 'click' on it's own is nice, the 'click' and vibration together feels right.

We'll have to see how it all goes when it's all put together though, perhaps I will have issues then?

I didn't think about it, but it stands to reason... without feedback, you don't really feel as you actually pushed the button.
One of the things I do not really like in my Android tablet is the "virtual keyboard"... if it wasn't wauy bigger than it, I'd use always the K400 logitech as its keyboard-touchpad. A lot of things are much better, with that.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 09, 2015, 10:53:37 PM
It really is a strange thing, pressing a button without feedback makes it feel like the result was coincidence rather than an inevitably controlled action. Having interaction with a device in this way makes you lose faith in its ability to perform precisely 100% of the time because, you're never quite sure if it was your action that caused something to happen.

I recommend anyone to try it out, you'll prefer the feedback options for sure!

Still waiting for that adapter board; China post is super slow at the moment, I guess due to the Christmas period coming. I did however get acknowledgement from the company today that they did send the wrong part and will send me the correct one - which I imagine I won't see until the beginning of 2016 - still, I did source another supplier so hopefully their parts will arrive soon. Other than this there's no further progress for now.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 23, 2015, 06:24:25 PM
Ok slight change of plan. It seems that the new 0.4mm pitch PCBs I ordered are massive and simply wont fit in the case so I've had a change of plan which I think may have worked out for the better (so long as it actually works).

The new idea:
[attachment=1]

Here you can see I plan to abandon the adapter PCBs and go straight to the IDC connector. This is better as it means that the space required to adapt the MBPR connector to IDC is about as small as it can be, leaving more room to try and sort some LED cooling later.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 23, 2015, 06:40:56 PM
I started working on this adapter idea today and have successfully completed one side (the TFT side). Here's a pictorial representation of 3 hours of my life earlier today:

1.) Remember this cable? I wouldn't worry it was a long time ago that I made this thing:
[attachment=1]

2.) Time to undo all those hours of work; I strip back the EMF tape to reveal the green wires that I grew to hate way back when:
[attachment=2]

3.) Snipping the wires back I carefully lined up each one and anchored them in the V-pins of the IDC connector. Sadly the green wires are too fine to have had their insulation pierced by the V-pins:
[attachment=3]

4.) Solder didn't work to break the insualtion either which meant that each wire had to be stripped and wrapped around each pin prior to soldering:
[attachment=4]

5.) With the soldering done it was time to reapply the EMF tape:
[attachment=5]

6.) Job done!! 3-hours later and every pin is checked for continuity and all tested working!!
[attachment=6]


Tomorrow I hope to tackle the other side of the wire. It's getting there, soooooo slowly. ;)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca November 24, 2015, 03:00:14 PM
2nd Adapter made up however, there was a problem. After drawing up a diagram of how the orientation of the connectors should be in order to reproduce a 1 to 1 cable, I seem to have taken my eye off the ball and wired the connector back to front - You can only imagine the level of cursing that I created upon dicovering this. This was especially frustrating as I made exactly the same mistake when I made the cable last year, which is why I was trying to be careful that I didn't do it again, ah well the best laid plans and all that.

1.) The mistake. Both connectors should be the same way up; with the connectors in this orientation pin 1 = pin 30, and pin 30 = pin 1, doh!
[attachment=1]

2.) I decided the easiest way to rectify the problem was to pull all the pins out of the IDC connector, flip them 180deg, and reinsert them. The pins pulled:
[attachment=2]

3.) Turned out pulling the pins and reinserting them was super easy. Here's the correctly oriented pair of adapters:
[attachment=3]

4.) Continuity testing of the adapters attached by the IDE cable thew up an issue on one of the pins, pin 28 was not showing any continuity. I forgot about this. Pin 28 is the cable select 'Slave' pin on the grey IDC connector of the IDE cable, and as a result is not present. The image below shows the IDE cable with the pins of the grey connector exposed. Pin 28 is seen to be missing:
[attachment=4]

I switched the grey connector for the black one (which has all pins present) and thought that was the end of it. It turns out that pin 34 of the blue connector is used by the cable select (CS) too and is absent from this connector. Since pin 34 was not used for the TFT control signals I went ahead and tested the newly made wire.

Test failed. There was apparently a short in the wire somewhere causing the controller board to go into hybernation to protect itself. This left me somewhat confused until I remembered that the IDE80 cable I was using is setup to have every other wire (of the 80 available wires) pulled to ground. It occured to me that those wires must be attached to one of the pins of the IDC connectors and this must be causing a short circuit.

It turns out that the above is true, however it's not just one pin; the IDC connector has the ground wires attached to pins 1, 19, 22, 24, 26, 30, and 40 - no wonder something was shorting in the DP2MBPR controller. See all of the above IDC issues in the below image (taken from http://www.allpinouts.org/index.php/Ultra_ATA_66/100_IDE):

[attachment=5]


I have now abandoned using an IDE cable and have instead purchased a 15cm IDC to IDC 40 wire ribbon, this should iron out all of the above issues. As always I'll update when I've tested the new wire.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca December 02, 2015, 10:54:40 PM
The IDC cable turned up today, yay! But one of the connectors was the wrong way around. Not too big a deal, I simply (and carefully) prised the IDC connector off one end, flipped it, cut the perforated part of the cable (from whence the connector came) and reattached the connector with the help of a vice - 5mins tops!

I lashed the cable up in EMI tape and plugged it in for a test:
[attachment=1]

Powered it all up and with a full blown sigh of relief (and a little fist pump) the screen came to lilfe!!
[attachment=2]


For completeness here's a couple more images of the cable:
[attachment=3] [attachment=4]


I'm so pleased that this worked! This part of the build has been a gamble from the off and has taken numerous painstaking hours of fiddly work to reach this point, finally I have a working plan of how this thing will be powered!!!

Next up then is to integrate the IDC connector into the case, sort out the cooling for the LEDs and then put it all together for a test run. Maybe I'll get some time tomorrow to do a little more?? hmm.

Actually I suppose I really ought to look into whether powering the Arduino and peripherals via the spare pins of the IDC connector causes any problems to the display signal. Right, I've made a note of that; perhaps I can tackle this tomorrow.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: metapharsical December 04, 2015, 03:32:32 AM
Very tight workmanship!
That's some cable porn if I've ever seen it!

And I'm gushing over those haptic-feedback OLED buttons already! You've home-brewed your own state-of-the-art interface (100% agree, buttons need to have all the sensory feedback the can have, and you implemented EVERYTHING (short of smell-o-button haha)). They'll look incredibly sharp in your wood veneer cabinet!

Just a fantastic build and well thought-out, and thank you for sharing your mistakes, they were very informative. That's some ace engineering - you found simple solutions to connector pins missing, and pins internally shorted together, and all that splicing/soldering.. I know your persistence will pay off, keep at it.

You're one great high-tech renaissance man!  ;D


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca December 04, 2015, 07:54:08 PM
Thanks so much.

Well I haven't quite built the interface yet, there's bits of it working but I'm running into some memory problems at the moment. I will sort it eventually. Once it's all working it'll be great.

In my opinion it's all about the mistakes! I've been on the forums for a while now and I've taken on a big project, it seems to me that I should highlight that even the Admins make mistakes! Speaking of which.......

So I began tackling the task of integrating the IDC connector into the case, this didn't go quite as hoped. First mistake was that I miscalculated the curve of the wooden overlay when taking into consideration locating the IDC connector. I had hoped that being 8mm in height it would slip nicely into a recess cut into the plywood (which is itself 8mm thick), however the curve to the wood means that it will not embed descretely without poking out of the back quite a bit.

Aestically it's not the best to have the IDC connector sticking out but I have limited options so once again it is what it is. The main problem here is going to be creating a structure to support the IDC connector so that it can take the force of the cable being pulled out and inserted, and hiding the handywork so that it doesn't ruin the look of the veneer. This problem I am tackling and I'll post more once I've settled on how to do this.

The second mistake is much more embarressing. I rather stupidly mis-measured where the magnet was in the plywood and had a bit of an accident with the router which caused a spark show and bit of a mess to clear up; nothing major to sort out really, was just a bit annoying that I couldn't have shifted the outline along to the left by 1cm prior to routing, doh! Images follow:


The marked out position of where the routing was to take place:
[attachment=1]


The damage done by my mistake:
[attachment=2]


This error is not massively critical, it's annoying for sure but I can sort it out (I think). These things happen we just have to deal with them when they arrise.








: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca December 08, 2015, 10:58:00 PM
OK so here's the plan for the IDC connector housing:

I veneered some extra pieces of plywood I had and cut them to size to fit around the IDC connector. The pieces are glued to the IDC connector with super glue and they are not going anywhere any time soon! The hole in the contour was widened slightly to accomodate the extra width of the connector and the housing was glued in place:
[attachment=1]


After the glue dried I carefully sanded away the excess and filled in any gaps with wood filler. The hole where I accidently cut into the magnet was blocked up with some extra veneered plywood I had laying about, and the backside (not shown in these pictures) was partially filled in :
[attachment=2]


I'm pretty happy with how this has turned out so far, especially in view of recent mistakes; I think with some finishing applied to the wood this will still look pretty sweet. One last image to show how the cable will look once plugged in:
[attachment=3]


The next couple of days will be tidying up some more and making adjustments to get things sitting correctly. More news when I have some.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca December 09, 2015, 03:03:58 PM
Bit more tidying up and an overview of how it looks from the top.

Here you can see the hole filled in nicely and the IDC extension trimmed down to the curve of the contour:
[attachment=1]


View from above:
[attachment=2]


It's all coming together now. This afternoon I plan to tidy up the back ready for a covering with black self adhesive baize material (found on snooker tables - relatively thin). If I have time I will work some more on the cooling for the LEDs - still not sure how I'm going to do this.....


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: bumhee34 December 11, 2015, 02:00:00 AM
Gorgeous.
It seems that cooling LED is quite difficult without metal materials..
Maybe Cintiq inner structures would be helpful. (I have never seen the inside of Cintiq)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: XDjackieXD December 12, 2015, 03:13:43 PM
Gorgeous.
It seems that cooling LED is quite difficult without metal materials..
Maybe Cintiq inner structures would be helpful. (I have never seen the inside of Cintiq)

If you have the FCC ID of the cintiq you want to see from the inside go here: https://fccid.io/search.php and search for it. there are great pictures of the cintiq companion hybrid for example ^.^


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca December 12, 2015, 04:23:52 PM
Yep like XDjackieXD says you can look up the fcc testing information on any product that has an fcc number. There's a post on the forum about this somewhere - might even be the original Serenitiq thread from a couple of years back.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca December 15, 2015, 12:52:16 PM
I'm still thinking about the LED cooling. I will definitely be using aluminium to draw the heat away but I'm unable to settle on how to do; part of me wants to cut a big chunk out of the bottom and replace the wood with metal, but this means careful measurement and cutting, and I need to make sure I don't come too close to the active area of the digitizer. Another part of me thinks that I should work around what I've already got in place and fabricate something to fit, but this option also requires lots of measurement and cutting and possibly more time however the chances of ruining what I've achieved so far are less. I need some proper time to sit and think about this, time I don't have at the momement.

On other news, and following the success of the IDC cable extention, I've managed to finish the connection part to the eDP controller enclosure.


01 - The IDC connector was measured and a template made, this was stuck to the metal eDP controller enclosure to mark out where the hole was to be cut:
[attachment=1]


02 - Preliminary holes were drilled to allow access with a file to begin shaping the hole:
[attachment=2]


03 - After a bit of time and some gentle shaping the hole was complete and ready to sit the IDC connector:
[attachment=3]


04 - A nicely filed hole fits the connector perfectly:
[attachment=4]


05 - The IDC cable lays between the controller buttons and the DP connector (plenty of room to reach both without problem):
[attachment=5]


06 - A very pleasing view of the working connection between the eDP controller and the LTN154YL01:
[attachment=6]


I am extremely delighted with how this is shaping up, but I can't say that this was without a great deal of luck on my side with the placement of parts - I would like to say that the layout of the eDP controller box was well thought out and precise, but this would be a lie as due to rigid cabling there really wasn't too many placed the components could go, plus I hadn't established how I would actually connect the eDP board to the screen when I made the enclosure. Very lucky!

By the way I've now finally tested the screen on the tablet and confirm it works OK (given there's no shielding) however, there are big areas with random clicks and blank spaces, I do get squiggly lines instead of straight ones in some places, and the allignment is off - but then again it's not finished yet. I have filmed it and once I remember my youtube login I'll post a link.

Oh, and the LEDs (which are resting on plywood currently) get pretty hot, sustaining a temperature of around 55degrees Celcius (over about 10 minutes) after around 15minutes. I would still like to bring this down though.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: XDjackieXD December 15, 2015, 08:18:33 PM
this looks really nice *-*
55°C should be fine but could shorten the LED's lifespan...


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: metapharsical December 17, 2015, 08:45:05 PM
I know I've seen a few builds where people put effort into cooling the LED or CCFL's.
I just don't think it's necessary.  My old Cintiq build didn't use any heatsink for the LED bar, and it lasted 5 years!
My LEDs probably failed because I was powering them with a cheap adjustable-voltage AC/DC adapter from RadioShack.
But then, I'm not an electrical engineer, so that's just my opinion.
Maybe the lifespan was shortened without adequate cooling... But hey, in 5 years you think you'll still be happy with a 1920x1080 LCD?
By then, I bet paper-thin-OLED-4K displays will be commonplace on the market  ;D

After I started my current build, I happened to catch a great deal on a couple of these Dell S2204M monitors ($50 a piece, like-new condition, wow!), so now I have 2 more replacements if I break the one I've already stripped for the build. That's why I'm not even bothering with putting a protective glass on my tablet, much less cooling the LED's. But it still stands in your case, if the LED burn-out, you could find a replacement LED bar for a small price and throw that in, right?

I understand though, you want to make your project the greatest it can be from the start... and you're achieving smashing success so far, so keep it up!
Definitely a build that anyone can appreciate the intricate beauty of even as it just sits powered-off on a table !

So the LCD is causing many issues?
Shitty, but you'll get that interference out! You da man Aerendraca!
It will be more interesting now to see how you improve it, rather than just hearing that it simply worked    ::)


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca January 04, 2016, 02:43:38 PM
Somehow I missed your post metapharsical, apologies. 5years without cooling is quite impressive, I'm not sure the low profile leds that I have would last that long without cooling, however I am thinking of simplifying my cooling idea to a less over-engineered one as I believe they can be driven warm without worry. No further progress to report yet though.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca January 13, 2016, 04:21:23 PM
Well I've settled on how to cool the LEDs and I've gone ahead and began implimenting it. I have manuafactured an aluminium heatsink (of sorts) from a bar of aluminium 2mm thick and 25mm wide bought from Wickes hardware store some time. The manuafactured heatsink is 380mm long, 20mm at it's widest part, and 15mm at it's narrowest. Since the highest temps recorded without the heatsink were 55degC I think this should provide a sufficient means to bring this down to a more reasonable level.

[attachment=1]
Here you can see the made heatsink and a pencilled outline of where it will sit. The wider end parts will be sunk into the underside of the wooden contour to provide anchor points.

[attachment=2]
The heatsink is shown embedded in place as highlighted in pencil in the previous image.

[attachment=3]
Here you can see how the bar sits on the bottom side of the overlay.

I have ordered some thermally conductive tape, once again from China, so until this arrives there is only small bits of tidying and some electronics to do in the mean time. I'm still happy with progress so far, but I wish post form China was quicker.



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 22, 2017, 03:41:19 PM
Just to say that I took a break from this project for a while due to other projects/commitments however, I have now found some time to continue this again so look out for further posts on Serenitiq2 progress soon.



: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 25, 2017, 01:59:05 PM
So let's bring things a bit more up to date. I have painted the glass cover, cut out the area for the oled screen to shine through, installed the capacitive touch film, installed the oled screens, and am beginning to embark on wiring it all up. With that spoiler, here's what I actually did:

I printed a full scale template of the areas to be cut out on paper and placed it under the glass as a guide.
[attachment=1]


Since there was a bit of a trick to getting clean edges (explained later), time was a bit limited and so the screen was painted in thirds using the paper guide as reference.
[attachment=2]

After the paint was no longer liquid but, critically, also not dry (also explained later), a self adhesive vinyl version of the template was placed over the top to act as a cutting guide and structural support during paint removal.
[attachment=3]

The areas where the OLED screen are to shine through were cut through the vinyl and gently peeled away from the glass.
[attachment=4]


Details:-
I tried various methods to get a perfect clean edge on glass including masking tapes and spray paints of numerous qualities and types with very little success. The method that eventually worked used Valspar (UK version of Platikote) brush on quick dry enamel paint. Additionally I also used a Silane glass primer to prep the glass for the paint, however Alcohol wipes would probably work just as well.

Steps:
1. paint on a thin later of paint and quickly dry it using a hot air gun on a medium to low heat (a hairdryer would probably work).
2. when the liquid shine has gone, paint on another layer at right angles to the original brush stroke, then dry again as above.
3. repeat this a few times until you have about 6 layers and no light can be seen through the glass.
4. cut out your shapes with a very sharp knife or scalpel.
5. leave overnight to dry off some more, and repeat the above for the next two thirds.

Because of the rapid heating of the enamel, the paint does not dry properly, becomes stretchy, and most importantly becomes very easy to cut. However, since the layers of paint are still quite thin, it is necessary to have something on the surface to aid the peeling from the glass as the paint can stretch and tear easily.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 25, 2017, 02:30:13 PM
Here you can see the clean lines that the above process achieved. You can also see that I worked from the outside in, dealing with the more complex cut out parts first.
[attachment=1]


With the screen painted I began work on applying the capacitive layer for the touch sensor.
[attachment=2]

The capacitive touch layer (Indium Tin Oxide coated Plastic) was glued to the glass using LOCA (Liquid Optically Clear Adhesive) and cured using UV light (I used the Sun); The conductive side of the capacitive layer is facing away from the glass.

On top of the ITO coated plastic, a layer of optically clear double sided film was applied. This stuff is sold on ebay for the diy repair of phones; by the way, don't even bother trying to use this stuff for that, without the proper tools it will just cause you a headache. The adhesive is so sticky and gooey that bubbles get trapped easily, and cleaning it off again is a nightmare. Even with the relatively small size areas that I use this stuff I managed to get a few bubbles trapped.

At one edge of the ITO film a layer I placed a strip of conductive adhesive copper tape. The copper tape provides a good area to attach wires later. The copper tape I have is branded by Adafruit and is sold on Amazon/ebay.

On top of the optically clear double sided film I placed a layer of linerally polarized film (see below), however I didn't take any photos of this so you'll just have to take my word for it.

Since I want to get the maximum brightness from the OLED screen without running them to their limit, I decided to remove the polarizing film from the front of each screen and use a thinner polarizer instead. Linearly polarizing film can be bought quite cheaply on ebay.
[attachment=3]


 


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca July 25, 2017, 03:10:18 PM
I found this picture of the ITO coated film being glued to the glass. You can see the glue being drawn out by capillary action, I thought it might be useful to include it.

[attachment=1]


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Ertew August 08, 2017, 04:59:03 PM
Nice trick with oled polarizer.
I must warn You. UV filter (often integrated with polarizer) is must have for outdoor OLEDs. Without that filter, OLED will be degraded by the UV light.
Hope You not have too much UV light near tablet.

Back to topic. ATA cable is OK for LVDS (USB 1.1 should be fine too), but flat SCSI cable are better because it have twisted pairs. Just look at attachment. 68pin connectors identical to ATA connectors are available too.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: DaBotz August 16, 2017, 09:39:15 PM
Note on FCC ID - as far as I can tell, Wacom is identified by an "applicant id" HV4 -
as a matter of fact, all wacom authorization requests can be found here:

https://fccid.io/HV4

Then, the ID of the single product is often, simply, obtained by adding the Wacom  model ID, removing the hyphens.

Thus the Cintiq 21UX - model DTK2100 - has simply the  FCC ID HV4DTK2100

The tablet doesn't always follow the schema...

The Intuos 2 seems to be simply the HV4XD, for example.


 


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 22, 2017, 11:19:03 AM
SCSI cables are a great idea for LVDS! I hadn't even considered them. I may change some of the display electronics at some stage so I will definitely keep them in mind.

Interesting note on the FCC IDs DaBotz, that should make tracking down more detailed info on the tablets a bit easier.

UV is a fair point Ertew, it is a concern when you remove the filters from the OLEDs, and if I was planning on using the tablet in direct sunshine I would probably not have removed them. There is some protection in the system though. The glass offers protection against UVB and will inherently attenuate all of it, although about 75% UVA can pass through the glass. I estimate about 20% of the UVA that does make it through will be further attenuated by the polarizing material, optical adhesive, optical tape, and ITO coated film before it gets to the OLED modules, so I think the levels of UV would need to be quite high and for a sustained period to cause catastrophic damage.

I've reached the latest milestone. The OLEDs are all wired and tested working, and the Touch pads are wired, calibrated and also tested working. Latest image showing the 9 OLED modules each with a unique image:

[attachment=1]


With initial testing now complete it is now time to move things onto the actual Sereitiq2 case. The wiring for this part I have already done though so it should just be a matter of spending some time removing the temporary grey wires and soldering the glass components to the new yellow wires.

[attachment=2]

Incidently there are 16 yellow wires that run along the bottom edge of the case just beneath where the glass rests and each one was a fiddly pain to line up. The total width available for all of these wires to run was only 8mm! It required tweezers, double sided tape, and tons of patience.


: Re: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01
: Aerendraca August 22, 2017, 11:25:12 AM
The other thing that took a while to do was labeling the wires. I used a multimeter to check continuity on each wire and used colour combinations of heatshrink to match them up.

[attachment=1]

[attachment=2]


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