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Author Topic: Intuos3 A5 wide build... strange ratio. How would you proceed ?  (Read 34212 times)
bernard
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« Reply #15 on: January 11, 2010, 02:50:38 AM »

for agilent pixel -- have you tried emailing the guy directly?  his email is on a few thread posts.
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GwenLP
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« Reply #16 on: January 11, 2010, 12:57:14 PM »

Well no, I haven't... I'd think the official way over the "contact" mail of his sit ewould be better.
Do you think it's allright to use his private adress ?
If you tell me the chap is nice and won't be furious if I contact him on his own mailbox then I will try that, yes.
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bernard
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« Reply #17 on: January 12, 2010, 08:51:21 PM »

The chap is [very] nice and won't be furious if [you] contact him on his own mailbox [unless you spam him of course]. Smiley

Actually, I never got any answer from posting from his site, only from his hotmail account.

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GwenLP
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« Reply #18 on: August 08, 2010, 02:37:58 PM »

OK folks, this is the rebirth of a topic !

I haven't been there for quite a while, too much to do. But I haven't given up the will to make a build myself...

I find it hard to know what screen to choose for my intuos 3 A5 wide.
I wanted a nice 11.6 1366x768 LED display. That would fit very nicely. But then I need the part to drive the VGA/DVI signal, and the part to power the LEDS. I have no idea where to find these...

So I thought I could use this
It is meant to be use with that screen.

Upside:
  • This is a nearly-sure fit.
  • The screen comes in a matte finish (Yes!)

Downside:
  • 10.6'' instead of 11.6''
  • 1280 instead of 1366 wide pixels
  • 1CCFL, not LED

Do you think this is a good option ?
Has anyone ever tried it ?
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bernard
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« Reply #19 on: August 08, 2010, 04:00:02 PM »

About the fitting size -- Make sure you do the math to compute the exact width and height to see if it fits on both sides.

To drive LED:  yeah -- it is more difficult to find anything about led-based backlights -- other then buying a new monitor $$$. 

Somebody just finished a 4x6 build  http://forum.bongofish.co.uk/index.php?topic=1672.0 if that can be of interest to you.

The 11.6 display -- where did you see this again?  You mentionned that you ask agilent pixels about  "their Controllers and the 1366x768 11.6" boards" -- Did you had some sort of model number for the "1366x768 11.6" boards"?  Because just saying "1266x768 11.6" refers to nothing in particular.  It is like asking, will this roof-box fit on my blue car with 4 wheels and 5 doors?  Grin
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GwenLP
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« Reply #20 on: August 08, 2010, 06:51:18 PM »

Absolutely no problems with a 10.6'' display: in fact, even a 12.1'' would fit in if it is the 16/9 ratio type.

I wish I could use a led display: the screen itself is easy to find, but the inverter thing (is it still called an inverter for LEDS ? I very much doubt it: they work from DC) kinds of discourages me...

About the 11.6'' displays from a few months ago: well,11.6'' displays of 1366x768 are perfect for this tablet. The 16/9 ratio is more or less that of the tablet.
I gave up with these for several reasons:
_ I got no answer from agilentpixels, and I am not the nasty "come back until you get what you want" type of customer. No answer ? OK. Over.
_It is also near to impossible (well I didn't manage it anyway) to find such a screen with a matte finish. They all come in glossy flavours.

This LVDS controller thing is also very frightening... Finding the right one for the right screen, having it prepared, finding the correct inverters for your CCFL, the right ribbon cables, etc... I didn't have enough time for this...

If I knew what LVDS to buy and what was needed tyo drive the leds, I would rather go for a 1366x768 display, believe me... But it seems too complicated to me.


That is why I contemplate buying this set from tabletmod.com. I think it will do a nice job.
Maybe I could get some feedback here concerning it ?
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bernard
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« Reply #21 on: August 08, 2010, 11:51:10 PM »

Sorry to ask again but:  That "1366x768 LED display" you keep referring to -- which one is it?  Do you have a model number or an hyperlink to it?

Yes, LEDs does not require an inverter. But still require a driver circuit (which, in certain cases, could be very simple to build -- but you need the LED specification -- for which a datasheet will kindly provide us).  But no model number, no datasheet.

I have no experience with tabletmod.com (DonShole's site) in general -- the guy seems to be a nice and honest guy. That is all I know!  Smiley
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GwenLP
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« Reply #22 on: August 09, 2010, 11:37:19 AM »

Well, I haven't bought any 11.6 1366x768 LCD, but it could be one of these for instance:

AU B116XW02 V.0
Samsung LTN116AT01

But buying one of these implies finding this driver circuit for the LEDs, and a compatible DVI input thing... whereas the above-mentionned kit makes it easy...
« Last Edit: August 09, 2010, 01:20:23 PM by GwenLP » Logged
bernard
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« Reply #23 on: August 09, 2010, 03:35:17 PM »

I understand, I am just looking at various options in parallel.  Grin
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GwenLP
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« Reply #24 on: August 10, 2010, 12:58:01 AM »

There is also this that comes into consideration:
http://yhst-75462742706392.stores.yahoo.net/lcdpalcdcoki.html

But 1280x768 seems too low for a 12.1''. There are 1440x900 that size !

And that is too expensive...

Unless I find some way to get an 11.6'' 1366x768 LED properly controlable by a kit, I'll try that kit of theirs with the 10.6 1280x768 matte screen. I mailed them for some info, but no response so far.

And it won't be that soon: my car needs major surgery...
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bernard
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« Reply #25 on: August 10, 2010, 02:20:53 AM »

Actually, thinking about it, 768 lines for a 11.6 lines is not that bad!   Nowadays 15 inches (widescreen HD) are ... 768 lines --- most of the brand new laptops at futureshop are HD!  A few are HD+ (900 lines) and the Full HD 15 inches (1080 lines) are quite rare to find.

If you want to compare apples with apples, compare the "DPI" (or PPI)  (Dot per inches or Pixel per inches).  The easiest way is to find the number of pixel in diagonal and divide by the size in inches.  So for 1280x768 at 12.1" == SQRT(1280*1280 + 768*768) = 1492.72 / 12.1 = 123 dpi
1280x768 at 11.6" ==                                          = 1492.72 / 11.6 = 129 dpi
1440x900 at 12.1 ==                                           = 1698,12 / 12.1 = 140 dpi (!)

But of course 768 lines even if it is a high DPI, is still 768 lines!

Have you looked at this site?  A member recently ordered a LCD for like 38$ !

http://pchub.com
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bernard
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« Reply #26 on: August 10, 2010, 03:12:38 AM »

...and look for LVDS drivers here: http://wiki.bongofish.co.uk/doku.php?id=bongofish:lvdsvendors
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GwenLP
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« Reply #27 on: August 10, 2010, 11:38:59 PM »

Thanks for the links Bernard ! Do you live somewhere on this forum ? It seems you are active in every topic !

About the dpi: yes, that is a bit of a concern: I'd like a nice resolution, really. My eyesight is darn good, and I hate to see the pixels on my main monitor...
That little 10.6 1280x768 can boast about a nice 10 dpi too, if i do the calculation you do. That is fine.

On the other hand, that is really small, and it doesn't use much of the wacom space... a 12.1 would do much better, the nice 42T0480 with its 1440x900 resolution would be mesmerizing but it has 2 problems:
  • It is LED backlit: where on earth do you find the inverter boards for that Huh
  • It is too expensive: at least 250£

I have printed three mock-up pictures of paint.net at 1280x768 10.6'', 1366x768 11.6'' and 1366x768 12.1''.
10.6'' is quite small really... I don't know what to do !!!

On another note: If I were to use the original wacom casing (I want the control buttons), I'd have to protect the screen somehow. I mean, you can't draw on a LCD monitor directly I guess... Would droping a glass rectangle into the screen frame do (if the edges are softened ) ?
« Last Edit: August 10, 2010, 11:45:10 PM by GwenLP » Logged
bernard
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« Reply #28 on: August 11, 2010, 02:04:43 AM »

I almost have my own topic where I answer myself !   Grin  hehe

BTW, I just exchanged an email with NJYTouch people -- they were very responsive (second day response) -- and they responded with a big email to all my questions. They told me they have a board to drive TTL LCDs. (smaller LCDs tend to be TTLs).  I asked if they have a solution to drive LEDs in a second round question (not yet answered -- time zone difference, they are based in China).

I also asked if I can publish their email on the wiki (no answer yet on that) -- but you can always uses ebay's "ask seller a question" (which is what I did).  Send them your question about driving specific LCD Panels and maybe ask away about finding what you want.  This is not a single guy like agilent pixel, it is a company, and they seem to care.  Hey! You have nothing to loose!

B.
« Last Edit: August 11, 2010, 06:15:38 PM by bernard » Logged
bernard
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« Reply #29 on: August 11, 2010, 02:09:09 AM »

You can put almost anything you like in front to protect. (just not metal -- duh).  Use your judgment there.  There have been lot of talk about this very topic on the forum.  Stuff like using Acrylic or glass like you mentionned.  Glass will break if dropped of course.
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