The I2C Touch Sensor is based on FreeScale MPR121, to feel the touch or proximity of human-beings fingers. This sensor includes 2 parts: one Touch Sensor controller, and 4 finger feelers. The MPR121 is a capacitive touch sensor controller which features internal intelligence, including a hardware configurable I2C address, an expended filtering system with de-bounce and completely independent electrodes with auto-configuration built in.
The touch sensor feelers, of which 4 are included in the touch sensor module, can be set in any place you like, to feel your finger's touch or proximity. NOTE: It must not get in touch with any conductive material.
- Twig - I2C Touch Sensor X1
- Touch Feeler X4