17" DSI LCD Setup
Posted: 29 March 2009 10:39 AM   [ Ignore ]
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First DSI lcd MT setup : simpleexcitouch

Hi there,

after reading, reading, searching, reading and reading again, I did my first setup !
It’s a DSI MT 17’’ lcd with endlighten plexi, IR leds flex ribbon from Environmental lights.
It’s a draft, a test before something bigger !
Here is a poor quality video showing blob test, calibration and first use of some apps.

More infos on my blog : http://www.simpleexcite.net

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Posted: 29 March 2009 11:53 AM   [ Ignore ]   [ # 1 ]
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Sweet. Seems to be very responsive and track well. So the rest of the details?

What kind of camera?
Which LCD did you start with?
What is the stacking order of the LCD, Endlighten, etc.?
What computer

Where did you get the endlighten? Are you in Europe, the States, elsewhere?

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Posted: 29 March 2009 12:12 PM   [ Ignore ]   [ # 2 ]
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The camera is and old Creative Webcam Live!, only running at 320x240 30fps under tbeta.
The good thing is it has a M12 mounted lens so I bought a 2.1mm wide angle lens from Unibrain (no IR coating).

I plan to buy a PS3 Eye later.

For the IR filter I use this one : Lee filter C87 sheet :
http://www.freestylephoto.biz/5331006-Lee-4x4-Filter-for-Gel-Snap-Infrared-87-100x100mm-Opaque?cat_id=1904
100x100mm sheet, flexible, easy to cut !

The LCD is a 17” HP monitor (L1710).

My PC is a athlon 3300+ with 4Go ram

Endlighten : PLEXIGLAS® EndLighten 0N003 XXL 10mm : http://www.plexiglas-shop.com/ I live in france

From top to bottom :
- Endlighten (I plan to put a protective thin plexi above it)
- LCD (I had to upper the endlighten to avoid plexi to break the LCD panel)
- Just below, the diffuser (from the original lcd backlight)
- The camera
- The backlight (original one without the diffusers)

Funny to see that the lcd backlight is a DSI one : piece of plexi with tubes in metal profile along two sides !

Hope it helps !

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Posted: 29 March 2009 12:22 PM   [ Ignore ]   [ # 3 ]
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Wow! That looks already very professional!
Congratulation for this “small”, but fine setup!

I hope you’ll keep us informed while going on a bigger one wink

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Posted: 29 March 2009 12:24 PM   [ Ignore ]   [ # 4 ]
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Looking great Simpleex.  Good to know LCD setups have a bright future in DSI setups.

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Posted: 29 March 2009 12:31 PM   [ Ignore ]   [ # 5 ]
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Thank you for your comments !

The box is crappy, I just started to build the final one, the first showed me I can cut the total height by 2 thanks to the Unibrain lens, it was a good way to test the whole thing, which cables need to be a bit longer, etc…

But it works and I feel happy for now !

Next step, finding a 1$ full HD 42’’…

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Posted: 29 March 2009 02:14 PM   [ Ignore ]   [ # 6 ]
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Very nice :D
I’m too working on a DSI project. I will be using a LCD screen. Don’t know what size yet still in planing stages.

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Posted: 31 March 2009 11:44 AM   [ Ignore ]   [ # 7 ]
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Nice!
In the future i’d love to work on this kind of set-up (LCD DSI) as well… (still working on a 32” DSI desk-touchscreen)
Just wondering if the backlight could be replaced by some plain white LEDs on the edge of the Endlighten (or maybe with an extra sheet of endlighten with plain LEDs on the edges, just underneath the LCD matrix, this way:
X____________X endlighten with IR LEDs
______________ LCD matrix
X____________X endlighten with plain white LEDs

Keep up the good work!

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Posted: 31 March 2009 11:59 AM   [ Ignore ]   [ # 8 ]
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Good idea, if someone can test this !??? With white leds or with the original backlights from lcd and endlighten, I think it must work ! My box is going to be flat ( I only need 300 mm from lcd to cam )

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Posted: 10 April 2009 11:07 AM   [ Ignore ]   [ # 9 ]
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Hello. Im new to this forum, but it looks like i will try to build a lcd dsi. How does the camera affect the backlighting ? Is the lcd lighting even ?

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Posted: 13 April 2009 06:37 PM   [ Ignore ]   [ # 10 ]
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Hi,
I’m a newbie too, been lurking for a while.
I was actually looking to see if anyone had used endlighten as the backlight like in nicopizza’s idea:
X____________X endlighten with IR LEDs
______________ LCD matrix
X____________X endlighten with plain white LEDs

but now, thinking on it, I wonder if you could go even further with it - a DSI LCD that used only one piece of endlighten that was lit with a mix of white LEDs and IR LEDs. So it would be:

x_________x protective/touch surface (glass?)
x_________x LCD matrix
x_________x endlighten with White and IR LEDs

It’s basically like Peau’s DSI diagram
but with a LCD instead of the rosco grey and a mix of white and IR illuminating the endlighten acrylic layer. The idea of 1 layer doing the backlight and IR appeals to me as I think it might provide maximum and even brightness to the screen plus it allows for the top layer (and the whole screen) to be as thin as possible so your finger would be really close to the LCD image.

What do you all think?

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Posted: 04 May 2009 03:25 AM   [ Ignore ]   [ # 11 ]
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Some LCD’s have a sort of glass surface on the matrix, like mine. It’s not really thick, but the matrix is applied directly to it. So you could choose to use that as touch surface…

It could get damaged, though.

I have:

IRLED->x_6mm-plexi_x<-IRLED
         xLCDLCDLCDx




            CAM
         BACKLIGHT

I think it’s good to dismantle a LCD first, to see how thick it is and how much space you have left.. Would your option work, because you don’t touch the surface where the infrared is.
I like your first option more, actually. But it’s really really really important to have an even illumination, and no bright spots at the edges.
The Backlight from the LCD is usable as well

With 6 mm plexi I hope the FTIR effect will be good..

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Posted: 23 September 2010 09:23 PM   [ Ignore ]   [ # 12 ]
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Can you tell me where you got your apps PLZ

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Posted: 24 September 2010 02:54 AM   [ Ignore ]   [ # 13 ]
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@nicopizza

pls use serch before posting similar is already tested.

bad to say… with no good results.

*look*

@Simpleex

Very nice & smooth setup!do you use only orginal difusser? so whats aout image quality? is it well as normal LCD?

greez

JonnyB

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