Re: Min Touch Screen module

["g8kmh" <lehane@xxxxxxxxxxxxxxxxxxx>]

Hi Dave,
Looks very interesting.

I've been playing around with the larger 2.8" units from SK Pang in
the UK and a breadboard PIC24F with Ethernet from a Wiznet board but its
stalled a bit over the summer and isn't at the PCB stage (and may never
be!).

My personal favourite is POE rather than Zigbee as it makes hooking the
device to Ethernet/xAP easier. Been down the RS485 route but wouldn't
again.....

Presumably the thought is to have an xAP to Zigbee mesh bridge under
Windows and use the MeshNetics stack on the Atmel longer term? This would
hide the internal menuing application (I guess) and present one (or more)
devices to xAP.

One issue I did find with these small screens is how to get decent bezels
that aren't cheap plastic (in my case Stainless is needed) have WAF and fit
UK back boxes - http://www.mm-wave.com/honeycottage/xaplcd2.htm
 Oh, that's the other issue with RF - metal back box and metal bezel =
(nearly) no RF :-( Clearly in some situations there will be plastic cavity
back boxes which will be better.

Regards,
Lehane

--- In xap_automation@xxxxxxx, "Dave McLaughlin" <dave@...>
wrote:
>
> Hi All,
>
>
>
> I have been looking at some way of installing small dedicated touch
screen
> units around my apartment for various control purposes and because I
have
> control of Homeseer via xAP I have designed the following after coming
> across small 2.4" touch panels for the 128x64 LCD displays.
>
>
>
> I have used the displays already and they are very bright and clear
and come
> in either green or blue backlight.
>
>
>
> I have developed a small PCB that fits on the rear of the LCD and
connects
> the data lines and has a small 4 way connector for the touch panel. 
At
> present I have not yet had the board made up and I wanted to post here
and
> see if you had any thoughts on it or any ideas to add to it, but bear
in
> mind the small size and what can fit on there.
>
>
>
> At present I have an Atmel Micro and a Zigbee module on there. I have
> included a relay as I had thought about it controlling a simple
contact
> closure on local external devices for switching on and off. As the LCD
is
> programmable, it can be made to control or display any information and
> respond the touch.!
>
>
>
> If you have time, I would appreciate if you could download the PDF and
have
> a quick look and see if you could improve on what I have? The PDF has
3D
> views of the PCB with some information about. At present there is
little
> code for it other than what I have from previous products. It should
> interface nicely to the xAP to Zigbee module I developed previously.
>
>
>
> http://www.embeddedcomputer.co.uk/TouchScreenModule.pdf
>
>
>
> Cheers,
>
> Dave...
>
> ---
> Very funny Scotty, now beam down my clothes!!!
> ---
>  <http://www.embeddedcomputer.co.uk>
http://www.embeddedcomputer.co.uk
> ---
>




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