Adafruit 12-Key Capacitive Touch Sensor Breakout - MPR121

Adafruit Industries, LLC

OSHWA UID

Certification Date

April 30, 2020

Country

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 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 A

Licenses

Hardware

Other

Software

MIT

Documentation

CC BY-SA

View Documentation

Project Type

Electronics

Keywords

Adafruit 12-Key Capacitive Touch Sensor Breakout - MPR121, Capacitive touch sensor, CircuitPython