freebus.org

Hello,

Here is a small circuit for the QT100A touch sensor I made.
On the output its possible to place a peace of not etched PCB to create a proximity / touch pad for good reception.
The Sensor can detect true wood, stone, glass, .... up to 2 cm with this configuration. The sensitivity can be adjusted by changing the size of the touch pad and by changing the value of C1.

It is very basic and easy to adjust for other applications.