MPR121 Capacitive Touch I2C

MPR121 Capacitive Touch I2C Sensor Module

Upgrade your electronics projects with the MPR121 Capacitive Touch I2C Sensor Module, a versatile touch-sensing controller that supports up to 12 independent touch inputs through a simple I2C interface. Designed for Arduino, ESP32, Raspberry Pi, and other microcontrollers, this module allows you to create touch buttons, touch panels, interactive controls, smart home interfaces, musical instruments, and more without mechanical switches. The MPR121 features built-in filtering, auto-calibration, and high sensitivity for reliable touch detection. It can also support proximity sensing and offers configurable I2C addresses for connecting multiple modules in a single project.

Features:

• 12 independent capacitive touch inputs
• I2C communication interface
• Built-in auto-calibration and noise filtering
• Supports touch and proximity sensing
• Configurable I2C address
• Compatible with Arduino, ESP32, Raspberry Pi, STM32, and more
• Low power consumption
• Compact and easy-to-use breakout board

Specifications:

• IC: MPR121 Capacitive Touch Controller
• Operating Voltage: 2.5V – 3.6V
• Communication Protocol: I2C
• Default I2C Address: 0x5A
• Touch Channels: 12
• Additional Features: Proximity detection, interrupt output, LED drive capability on selected pins

Applications:

• Touch-sensitive buttons and keypads
• Home automation control panels
• Interactive displays
• DIY musical instruments
• Smart appliances
• Robotics and IoT projects
• Human-machine interfaces (HMI)

Package Includes:

• 1 × MPR121 Capacitive Touch I2C Sensor Module