Re: [OT] Possible bulk buy on 128 by 64 graphic displays with touch screen

["Paul Robinson" <ukcueman@xxxxxxxxxxx>]

Is it practical to use this remote from a PC? Can't be a simple MSS100 to
give it ethernet
because you're talking about serial+parallel access, but what about 20-30m
of cat5?

----- Original Message -----
From: <ian.bird@xxxxxxx>
To: <ukha_d@xxxxxxx>
Cc: <ian@xxxxxxx>
Sent: Monday, November 07, 2005 5:06 PM
Subject: [ukha_d] [OT] Possible bulk buy on 128 by 64 graphic displays with
touch screen


> Hi all
>
> I am looking at buying some of these (see below) touch screen displays
> from Apollo for a project I am working on but the supplier has upped
the
> minimum order quantity to 1000 pounds plus VAT and delivery. This is a
> little more than I wanted to spend so I am looking to share the
burden.
>
> The displays are available in either blue/white mode or amber/dark
blue
> mode. They have a 4 wire resistive touch screen pre bonded onto them.
You
> can see the non touchscreen version in action at the beginning of the
last
> UKHA video. You can get a taster of the work I will do from this page
> although there are no details of the touch controller chip on there.
>
> http://www.mollyology.com/ProjectsGraphicDisplayInterface.php
>
> I am thinking it would be best to sell these on with the touch
controller
> and other hardware fitted onto a small daughter board otherwise
> interfacing would be problematic for most. I would bring out the
> connectors to standard headers unless anyone wanted something
different.
> The PCB's would be professionally produced - not home made.
>
> Here is the link to the suppliers page about the screens
>
> http://www.apollodisplays.co.uk/51553.php
>
> This would mean anyone could get into really neat touch screens for
their
> home made devices at relatively low cost.
>
> I also have some C code to talk to these units using the parallel
> interface as well as a library of functions for circles, ovals, lines,
> rectangles, text, custom characters and pictures which I will share.
The
> code is written for the AVR CodeVision C compiler but should be pretty
> portable. I ported some of it from another compiler in the first place
> anyway.
>
> The touch screen outputs the touch coordinates with a T prefix
followed by
> two 4 digit comma separated sets of coordinates. A release action
sends
> the same string but the prefix is an R e.g. T0123,0232 or R0212,0232.
> Coordinates are sent across a serial link at 9,600 or 19,200 as long
as
> the screen is being pressed. This enables dragging to be supported if
you
> are really keen.
>
> If anyone is interested please mail me at ian at mollyology dot com or
on
> list if applicable.
>
> I would expect the screen, associated electronics and PCB completely
> assembled and tested to be about 50 to 60 quid. I am not making any
money
> out of this, just breaking even. I simply cannot afford the have 1200
> quids worth of screens sitting on the bench for the next year or two
until
> I complete my current rather complex project.
>
> I am not knocking the LCD shop or other sources of screens but I do
> believe these prices compare very favourably with lesser screens e.g.
the
> 20 by 4 line display Keith mentioned earlier at 20 pounds in single
> quantities. They are simpler to interface but have no touch screen
option
> and are far less versatile.
>
> As always, feedback and suggestions welcome.
>
> Thanks
>
> Ian




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