10.2" Touchscreen - Need Electronic Guru!

[devmod]

I am trying to obtain parts for my arcade project and came across a device that runs on an arm processor...
It has a lcd / touchscreen which are currently working, I was wondering if anyone knew what I needed to get it to work on a regular pc?

These devices can be had online for around 90 bucks which is pretty cheap for a screen with touchscreen...

I know little about electronics but lots about pcs, so I just need to figure it out a way to connect this to a computer to get things going...

The lcd is A102VW01 http://docs.google.com/viewer?a=v&q=cache:NjG1sUhNzoMJ:www.lcd88.com/PDFDownLoad/32ec1cd16d5d043c/A/A102VW01_49a22de7d484424178849bc617bc4f99.PDF+a102vw01&hl=en&gl=us&pid=bl&srcid=ADGEEShc3ScH7792Dx9xiC8M-FwWAIXa_QjlHbRmy4w5IUXHFHu9G-knbLiO-3GEGF1du36Ry2V2SStF22ZUBwvxGhsJYc5TCVC4KZZNuoSvuO1KynTWYDkaZ1gExmGhV4hdOHN-OLbp&sig=AHIEtbQA5nKDHajEeLFdPDCimAJS0Zkjwg

The lcd comes connected to a 10.2 inch t-con + inverter.

And the touchscreen outputs a ribbon cable with 4 contacts.

Any clues would be appreciated. It would be sweet to select games on a small touchscreen

Thanks!

[Samstag]

I think you'd have much better luck communicating with the ARM than trying to get video onto that LCD.  I'm not seeing any off-the-shelf interfaces or reports of hobbyists using this model.  It might use the same interface as some more common LCD but I'm thinking it's going to cost much more in time and/or money than you're expecting.

If you're already an electronics wizard, this is a project that could get you that promotion to guru.

[devmod]

Lol, yeah I could not come up with anything in English lol
Most boards I found were from distributors in Korea and there was little if any information regarding setup or anything else :/

I guess I will just forget about it thanks!

[MonMotha]

The data format for this panel appears to be your standard parallel RGB (18bpp).  Nothing special there, though data in that format is very difficult to get out of a PC.  VGA or DVI/HDMI can be converted reasonably easily, but I don't know of any off-the-shelf devices to do so, and you'd have to get your PC to format the video exactly right which can be difficult under Windows.

The power requirements, however, are unusually hairy and not particularly well documented.  Some reverse engineering of the power supply from the donor device would probably be required to get this thing operational even if you had data in the right format.


The touchscreen is probably just a standard 4-wire resistive.  There's plenty of semiconductor devices out there to make that interface easy (TI has a nice one, though the part number eludes me at the moment), or you could roll your own on a microcontroller (e.g. use an Arduino) if you're so inclined.

[devmod]

Sounds like a lot of work... Might be cheaper just grabbing a touchscreen of ebay or something...

[Mr. Dude]

Monmotha is more than likely correct in the fact that it is a 4 wire resistive touchscreen.  Look for a manufacturer name on the touchscreen and see if you can go to their website.  They might have a PCB, USB or serial connector and software to hook it up and calibrate it.  If not there are plenty of chip suppliers out there who could probably hook you up.