ROBOT.LK

Is that even possible. Yes it's possible today. And I have seen this on the internet and I
would like to share this with you boys and girls.

[media]http://www.youtube.com/watch?v=j3b68vZQ ... r_embedded[/media]


Source link: http://hackaday.com/2010/11/16/paper-touchpad/

There is no big logic in there. It is just two voltage sources that detects the resistance and from there predict the pointer. When the carbon layer in not continuous, you will find practical problems as seen on the video.

This video is so much helpful and knowledgeable to me.