MPR121 Capacitive Touch Keypad
The MPR121 capactiivie keypad uses the MPR121 and 12 touch sensitive pads to give you a simple 'keypad' with an I2C output. The board also has four mounting holes allowing it to be used as na input system in place of traditional buttons.
Note: This is uses 3.3V logic. You will want to use a logic level converter with this for 5V systems.
- /Firmware - Any firmware that the part ships with,
- /Hardware - All Eagle design files (.brd, .sch)
- /Production - Test bed files and production panel files
- SEN-10250 Version 1.3
The hardware is released under Creative Commons Share-alike 3.0.
All other code is open source so please feel free to do anything you want with it; you buy me a beer if you use this and we meet someday (Beerware license).