This TTP226 8 channel Capacitive Touch Sensor uses the touch-sensing IC TTP226. The purpose is to add capacities in touch to your project. Just power with 2.4 to 5.5VDC and touch the pad to activate the capacitive touch sensor. These touch switches interface easily to any project – with or without a microcontroller.

The sensor detects the change in capacitance and activates the switch. It is because when a capacitive load (such as a human hand) is in close proximity to the sense-pad .Custom sense-pads can be made from nearly any conductive material. These sensors can detect touch through thin layers of non-conductive materials such as glass, plastic, fabric or even wood. So, you can make this sensor hidden in the wall, tabletop and other places, which allows you to remove the conventional push-buttons troubles.

There are totally 8 pads on this module, these sense-pads can be extended with wire and almost any conductive material so that you can add 8 touch switch easily for your project.

Specifications of Capacitive Touch Sensor Module:

1.  Onboard TTP226 touch sensor IC 8 keys
2. 8 board-level status indicator
3. Working voltage: 2.4V-5.5V
4. Advanced Pins breakout, so that the output mode and working mode selectable.
5. Low power selection
6. PCB board size: 47 (mm) x 46 (mm)

Downloads:

•  TTP226 Datasheet.pdf
•  TTP226 schematic diagram.pdf