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Hi,

i'm using a sharp 3.5 inch display with touch screen. I've never done any touch screen development before and am having trouble finding the relativent info on the net.

It's a 4 wire resistive touch screen, which i want to interface with an ATmega8. As far as i know you have to apply a voltage to the touch sceen then sample the ouput voltage to determine one co-ordinate then use the result of that to apply another voltage and sample again to work out the other co-ordinate.

Not sure if that is right or how i go about implementing it.

Any help would be appreciated.

Thanks.