MPR121 Breakout V12 Capacitive Touch Sensor Controller Module I2C Keyboard

The MPR121 Breakout V12 Module is a 12-channel capacitive touch sensor controller that communicates via the I2C interface, making it ideal for creating touch-sensitive keypads, control panels, and interactive electronics. Built around the MPR121 IC, this module allows you to replace mechanical buttons with a sleek, touch-based interface.

Each of the 12 touch-sensitive inputs can be connected to conductive materials like foil, wire, or custom electrodes, enabling custom keyboard layouts, MIDI controllers, smart home interfaces, and wearable touch inputs. Fully compatible with Arduino, Raspberry Pi, ESP32, and other microcontroller platforms, this module is perfect for DIY projects, automation systems, and human-machine interfaces (HMIs).

Key Features:

• 12 capacitive touch input channels
• I2C communication interface for easy integration
• Built-in touch detection and debounce filtering
• Adjustable touch sensitivity via software
• Operating voltage: 3.3V to 5V DC
• Breakout board with labeled pins and pull-up resistors
• Compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and more

Applications:

• Touch-sensitive keypads and keyboards
• MIDI and audio controller interfaces
• Custom capacitive control panels
• Smart home and IoT interfaces
• Wearable and textile-based touch inputs
• Human-machine interaction (HMI) systems