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1  Screen Tablet malarky / Successful builds! / Re: Great breakthrough ! on: July 15, 2008, 06:53:57 AM

So, I replaced it with a 12 volts lead battery.


Nice idea! That give me the idea to try to plug my cintiq's transformer right on my apc to see if it helps my little jitter problem. I'll try this as soon as I can access my apc (kind of cables jungle under my desk)!

Keep us tuned!
2  Screen Tablet malarky / Build Logs / Re: colinus build log on: June 13, 2008, 08:45:32 AM
That's marvellous.  So is Elega an online thing?   There was a place mentioned where you could get various materials laser-cut and delivered to your door, it that one of those?

Thanks Drew!
Nope, Elega is not an online thing. They just have a crappy website designed in the 90's! They work everything mechanically, with a cnc miller and so on. Nice work and quick. My front plate cost me  61 us$.
For the laser cut, I've already dealed with Ponoko, they make good job, but the shipping costs (to Europe) are prohibitive.
For waterjet cut, I know Big Blue Saw, but I don't know them.

I'll post pics of my build as soon as possible.

3  Screen Tablet malarky / Build Logs / Re: colinus build log on: June 11, 2008, 10:22:17 PM
Hi all!
I've just received my nice Dipan cover, well manufactured by Elega.

I've just put in it my anti-glare glass, quickly taped on top of my build and shoot some pics for you:

the osd and led holes

one of the two slider holes

the buttons and the other slider hole

the whole thing

Now I have to:
- fix the buttons and the sliders
- fix the osd pcb / leds
- find a way to fix together the front plate / back cover nicely
- paint my back cover in black
- polish the aluminium legs
- making a nice photo-reportage of my build and posting it here
- editing my build log to add a "success" before the title.


ps: I've placed the buttons on the right because I'm a lefty guy...

4  Screen Tablet malarky / Successful builds! / Re: Le French Bongtiq in progress on: June 11, 2008, 11:26:56 AM
For my build I've cut a sheet of 3mm thin pvc at the exact form of my wacom pcb, cut a hole that fits the lcd / backlight enclosure, and double-side taped it on the wacom pcb. After that, if you turn the whole thing upside down, the lcd fall, but he will be maintained firmly by the glass and the front protection thing.

The only problem I have is that pvc is heat-sensitive, and it expands a little bit (1,5 mm) when my ccfl's became hot (after 1/2 hour). But nothing to give you a brainstorm. Perhaps I sould have used another material like hard cardboard or so...

By contrast, the arrow won't follow the stylus unless it's really touching the glass on top of the screen. Something not very comfortable to work with... But manageable.

Could it be due to the pc where you connect it? Too slow machine? Personally I had this problem with my old laptop. But its strange that when you pen is toutching the glass, it works ok... Tried without the glass?

5  Screen Tablet malarky / Successful builds! / Re: Le French Bongtiq in progress on: June 10, 2008, 10:29:27 AM
I've tested with my laptop: a little less jitter (charger plugged or not), but nothing stunning.

I also have to try with the analog cable from my pc, because for now I'm in digital connection with a *standard* cable (nothing gold plated or so).
Perhaps it makes a difference.

But if jitter is due to electric interferences in the power unit, I had to say that all the wall plugs of my office are not correctly earthed (I work in an oooooold building).
To obtain a sort of earthing, I've had to return the central connector to the negative one. It makes a difference, but it's not as if I had a real earth connection.
6  Screen Tablet malarky / Successful builds! / Re: Le French Bongtiq in progress on: June 10, 2008, 08:12:22 AM
My experiment show that the jitter on a desktop are more. Where I get no jitter when connected on a laptop.
Could it because of the power source? Anyone with a power regulator running with their PC?

Oh oh, interesting solution.... But I have an APC regulator that power my pc... I'll give it a try with my waio laptop.
7  Screen Tablet malarky / Successful builds! / Re: Le French Bongtiq in progress on: June 10, 2008, 08:05:43 AM
At least partial. The screen works again ! It was your method, Colinus. Thanks.
Tomorrow, er... Later in the morning I will try to replug the tablet and the screen to the only working computer in the house that accepts them: my wife's. 

Happy to know that my poor knowledge and experiments are helpful to you!
For my build I've also noticed an increased jitter when my pcb's became hot, that's why I've added a fan ventilation system to my chassis. I've also shielded the inner of my back pvc cover, that was really helpful!
This is my jitter now:

Nothing terrible as you see, but I can't totally remove it.

Beware of where you plug you tablet on your wife, sometimes they don't like it...  Grin
8  Screen Tablet malarky / Successful builds! / Re: Fraggin' neons on: June 09, 2008, 12:04:07 PM
... But only one neon lights and only half of it. I read somewhere here that the cable extension of the neons is tricky. Will see of that. Hope is not the inverter board...

Oooh! The FFC cable extension is a nightmare... in my build I've tested everything to extend these cable, with no success. I've finally re-soldered the original ffc cables, and extended the ribbon cable that goes from pcb to the inverter with no problem.

With my previous screen I've extended the ffc cables with thin sillicon cables, and the result was a dimmer backlight and a inverter overheat.

A friend has said me that the inverter itself is tuned to the exact cable resistance, that's why we can't extend / shorten it, even with the same wire gauge / material (tin or copper usually).

I've managed my chassis arrangement in order to keep the inverter at the same place than in it's original position. It was difficult but not impossible. I've just drilled a hole in the wacom board to have a smooth wire arrangement.

Good luck my friend!!
9  Screen Tablet malarky / Heyaaaalpppp / Re: Plexi/Glass/Lexan??? on: June 03, 2008, 06:55:44 AM
You know what... I'm an idiot. My roommate works for a frame shop right now. He is going to spec me out a 10x13 sheet of anti-glare glass. it's going to be 1.5mm though.

The glass is for me perfect, because it is very rigid and gives a nice pencil-like feeling. Mine is 2mm thick, but I thing 1,5mm is ok too. My young girl (2.5 years old) already make drawings on my tablet, and the glass don't break. She's a perfect crash-tester!

What kind of material do you plan to use for the rest of the cover?
10  Screen Tablet malarky / Heyaaaalpppp / Re: Plexi/Glass/Lexan??? on: June 02, 2008, 08:56:29 PM
Hey, I've tested Lexan, Plexiglas, Polycarbonate and Acrylic glass.
The one who dosen't scratch too quickly is the plexiglas, but the "feeling" is not very comfortable.

For my build I've forgotten to use a one piece cover, and I'm going to use real mineral glass. I've tested on a sheet of anti-glare glass, 2mm thick, ant it gives a nice and smooth feeling if you put the anti-glare side on face to you. In addition it is not reflective at all, so you don't see your face when you draw...  Undecided

I'll make a cover with 4mm thick dibon (a foil of polycarbonate sandwitched with 0.3 mm aluminium), with a hole inside for supporting my glass. Not as nice as a one piece cover, but more durable I hope than plexi / lexan...
11  Screen Tablet malarky / Build Logs / Re: colinus build log on: June 02, 2008, 05:15:24 PM
Impressive Colinus! Excellent work!

Now how upright can you make the unit with those legs?  I'd be very tempted to want to stand it up more vertically, ala like a painting/drawing board on an easel.

Thks claymonkey!
For the upright I have no precise angle to give you, but just a pic:

If you want it mor vertical, you can place the axis of the legs in the bottom of the chassis, but it will give more torque to the tube... in my case it won't be possible, but if you plan everything in advance, nothing is impossible!

But this method works fine (for now)!

12  Screen Tablet malarky / Build Logs / Re: colinus build log on: June 02, 2008, 12:23:26 PM
Cant believe how good this thing looks, fantastic job!

Thanks chems!
I hope everything goes ok until the end of the job! No smoking electronics, no jitters, no lcd crash, and so on...

I'll post as soon as I have made some improvements!

13  Screen Tablet malarky / Build Logs / Re: colinus build log on: June 02, 2008, 11:16:06 AM
Hey folks!
After some time I've ended up the "chassis stand" phase. I've added to my "Cyberman" two aluminium legs, lockable with an old shimano quick realese thing. Like this I can accommodate any working angle, even if the surface where I put my tablet is not perfectly flat.

Here are some pics:

the quick realese thing

the tube that goes through my pvc chassis, glued in place (thanks araldit (a swiss bi-component glue))

the two legs

I have now to correctly add mastic to this contraption, sand it, and paint it.

For now my dipan cover plate is in production, I should receive her this week...

14  Screen Tablet malarky / Successful builds! / Re: Le French Bongtiq in progress on: May 29, 2008, 03:38:30 PM
Oops, I came too late!
I hope this IIYAMA BX3811U (what's for a strange brand name) won't cause jitters! Personally I've started with a acer, and he was not friendly with my wacom... lot of jitters and random clicks. For punition my girl has made a big puncture in the lcd screen! (see my build log).

Finally I've found a cheap 1503fp witch is well known here, and it works fine! Just minor/ close to no jitter when cursor is near the ccfl's with minimum shielding.
15  Screen Tablet malarky / Successful builds! / Re: Le French Bongtiq in progress on: May 29, 2008, 11:12:19 AM
Hey Kerbec29, I've found two dell 1503fp here:

I imagine the shipping costs to Britanny are not expensive...! I've also searched for a 1503 fp on the "ebay-like swiss site",, but nothing.

While talking from Britanny, I'll come there with my familly for holidays, two weeks in Belle-Ile... nice! I come here every two summers!

Hope my post helps!
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