Quote Originally Posted by rsocor01 View Post
No, the 16F887 won't do it. You need a chip with a CSM (Capacitive Sensing Module) built in. Take a look at the PIC16F72x and PIC16F193x series.
F887 will do it. In fact every chip with ADC can do it with some effort.

At www.microchip.com/mtouch there are alot of app. notes and informations. Look for the more recent files.

They have theory of the various phases of the touch evolution.

First there was the charge/discharge with a loop through the micro, then the S-R Flip flop which I recall the F887 has inside, then the ADC use etc.

Of course it is a lot easier with a dedicated module for the the touch senors.

Ioannis