View Full Version : Capacitance touch sensor using RC time

03-22-2007, 04:41 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, 03:34 PM
Ktekx -

If you don't feel like re-inventing the wheel, Qprox has some excellent capacitive touch sensors:


Bruce Bates


03-22-2007, 04:39 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?