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PICList Thread
'[EE]: Graphic LCD with touchscreen membrane'
2003\07\02@144709 by Andre Thomas

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Hi Guys (and Gals?),

I have a graphic lcd module which came out of some broken coppier, I think a
RICO or something. I have searched on the internet and have not found
anything that resembles it and was wondering if any of you have some time to
lend a hand?

The visible display is about 120mm x 90mm.
I have no idea what the resolution is, how many colors it can display.

It has three interfaces as follows :

- Two wires for driving the backlight, no doubt invertor based so I need
some sort of
 inverter circuit?
- Four contact flexible strap connector for touchscreen functionality.
- Twelve contact flexible strap which I presume is for "communication" and
"power voltage"

If anyone has time, can you please explain how I would go about figuring out
how to get this
interfaced to a PIC16F877 ?

Thanking you in advance!

Regards,
Andre Thomas

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2003\07\02@161309 by Ben Jackson

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On Wed, Jul 02, 2003 at 08:50:40PM +0200, Andre Thomas wrote:
> I have a graphic lcd module which came out of some broken coppier, I think a
>
> The visible display is about 120mm x 90mm.

Sounds like the ones on our Xerox copiers.  If you can't find
documentation on the whole module, or at least some of the
chips involved, try to find a working copier with one of these
modules you can hook up to a logic analyzer.

You could probably work out which lines were power/data just by
observing the trace routing, but without docs or examples you'd
probably never work out the initialization sequence...

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Ben Jackson
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http://www.ben.com/

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