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| Touch Screen Development http://forum.lcdinfo.com/viewtopic.php?f=9&t=611 |
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| Author: | need2know [ Mon Apr 19, 2004 4:46 ] |
| Post subject: | Touch Screen Development |
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. |
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