As you may know some PIC microcontrollers have integrated capacitance module that allows direct interfacing of capacitance touch sensors. IN following tutorial there is a PIC16F1937 microcontroller use which has a 16 channel capacitance module.
Tutorial explains how to connect four capacitance touch sensors that are nothing more than simple electrodes connected to MCU pins. Four LEDs indicate which button is sensed. And great thing is that it is possible to implement multi-touch feature as well.