Adafruit 12-Key Capacitive Touch Sensor Breakout - MPR121
Adafruit Industries, LLC mail
The MPR121 has support for only I2C, which can be implemented with nearly any microcontroller. You can select one of 4 addresses with the ADDR pin, for a total of 48 capacitive touch pads on one I2C 2-wire bus. Using this chip is a lot easier than doing the capacitive sensing with analog inputs: it handles all the filtering for you and can be configured for more/less sensitivity. Click the link labeled 'Project Website' to find out more.
Version
Rev ALicenses
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Project Type
Electronics
