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MPR121 Breakout V12 board Capacitive Touch Sensor Controller Module I2C keyboard


1. Capacitive touch sensor controller driven by an I2C interface.

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The MPR121 Breakout V12 board Capacitive Touch Sensor Controller Module I2C keyboard a versatile Capacitive Touch Sensor Controller Module, communicates via the I2C protocol. In this section, we’ll explore its key features, specifications, and various applications.


    • Responsive Touch Sensing: The MPR121 features capacitive touch sensing, enabling precise touch input detection.
    • I2C Communication: Because it employs the I2C interface, likewise simplifying integration into diverse projects.
    • Multiple Electrodes: Moreover this breakout board accommodates up to 12 touch-sensitive electrodes, fostering complex touch interactions.
    • Adjustable Sensitivity: Users can fine-tune sensitivity settings to match specific requirements.
    • Interrupt Pins: Two dedicated interrupt pins streamline communication with microcontrollers.


  • Input Voltage: The MPR121 operates across a wide voltage range, typically from 1.7V to 3.6V.
  • Low Power Consumption: It minimizes power consumption, rendering it suitable for battery-powered devices.
  • I2C Address: The module allows configuration with different I2C addresses, enabling multiple devices on the same bus.
  • Data Rate: Supporting a data rate of up to 400 kHz, additionally it ensures fast and responsive communication.
  • Interrupt Output: Because the module issues interrupt signals for touch detection events, simplifying real-time response in applications.


  • Touch-Controlled Keyboards: Create interactive keyboards and keypads featuring touch-sensitive buttons for various electronic devices.
  • Proximity Detection: Implement proximity sensing in applications such as automatic faucets, soap dispensers, or lighting control.
  • Gesture Recognition: Develop interfaces based on gestures to control gadgets, robots and appliances.
  • Human-Machine Interfaces: Improve user experiences by incorporating touch input into your user interfaces.
  • Security Systems: Enhance security systems by integrating touch-based authentication or access control.
  • Interactive Art Installations: Utilize the module for creating interactive installations that respond to touch.
  • Education: Employ so it as an educational tool for teaching electronics and microcontroller programming to students.

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For more information:-www.mifraelectronics.com 
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  • 1 x MPR121 Breakout V12 board Capacitive Touch Sensor Controller Module I2C keyboard


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