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View Full Version : Capacitance touch sensor using RC time



ktekx
03-22-2007, 05:41 AM
I would like to make a touch sensor pad simliar to this : http://mondo-technology.com/pcpad.html

What I'm not sure of, is how to arrange the resistor/capacitor so that the person touching the sensor pad will change the RC value.

Bruce Bates
03-22-2007, 04:34 PM
Ktekx -

If you don't feel like re-inventing the wheel, Qprox has some excellent capacitive touch sensors:
http://www.qprox.com/

Regards,

Bruce Bates

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ktekx
03-22-2007, 05:39 PM
Thanks, Bruce, I think that's just what I'm looking for.


The qprox "Wheel & Slider" are pretty neat, I guess that's what the ipods use?