TTP223B 1 Channel Digital Capacitive Switch Touch Sensor
Add a nice capacitive-sensing button to your project with these TTP223B 1 channel digital capacitive switch touch sensor from PMD Way.
They're easy to use, simply connect between 3.3 and 5V DC to the Vcc/GND pins - and the output pin will change state when pressed.
The onboard LED indicate button status so you can easily tell the status, or just have fun blinking the LED.
This board is also useful if you're interested in making your own touch-device as you can prototype with the TTP223B IC with this unit then build the IC into your own PCB.