Adafruit 12-Key Capacitive Touch Sensor Breakout - MPR121
Adafruit Industries, LLC mail
OSHWA UIDUS001088 Project Website
March 02, 2021
United States of America
The MPR121 has support for only I2C, which can be implemented with nearly any microcontroller. You can select one of 4 addresses 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. This sensor uses a 4-pin Sparkfun Qwiic-compatible connector called STEMMA QT, which allows the sensor to communicate over I2C without soldering. Click the link labeled 'Project Website' to find out more.
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