Expansion Board for Boson - Gravity Compatible


The micro:bitis a pocket-sized microcontroller designed for kids and beginners to learn coding and electronics, letting them easily bring ideas into DIY digital games, interactive projects, and robotics. 

However, on-board I/O rings and crocodile clips sometimes are not easy to use or safe enough to connect peripherals. To explore more possibilities with micro:bit, DFRobot has designed the micro:bit Expansion Board for Boson, a carry-on board that connects to the micro:bit via the edge connector.

The expansion board comes with six 3-Pin sockets, compatible with hundreds of DFRobot’s Boson and Gravity modularized electronic blocks, covering most popular digital and analog sensors and actuators, supporting sound, light and motion interaction. 

Click the link to learn more about DFRobot’s Boson module: https://www.dfrobot.com/boson

Click the link to learn more about DFRobot’s Gravity module: https://www.dfrobot.com/gravity

Furthermore, the onboard 3.5MM headphone jack and volume knob support direct connection to headphones. 

To ensure a steady current supply for these peripherals, the expansion board can be powered externally through the USB power port.

micro:bit Boson game pad

micro:bit RGB LED heart rate monitor


  • 3-Pin fool-proof connector x 6
  • Headphone jack with a volume knob
  • The external power port and ON/OFF switch
  • DFRobot Gravity and Boson electronic module compatible


  • MicroUSB Power Port Voltage:5V
  • PH2.0 Input/output Voltage: 3.3V
  • Input/output ring Voltage: 3.3V
  • Maximum Current: 500mA
  • Working temperature: 0-85 ℃
  • Dimension 80 * 70 mm / 3.15 * 2.76
  • Weight: 48g



  • Micro:bit Expansion Board for Boson x 1
  • 200mm fool-proof PH2.0 cable x 6