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Elecfreaks sensor:bit for micro:bit (sensorbit)


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Sensor:bit is a breakout board based on micro:bit. It extends all available I/O ports on micro:bit with individual pin breakouts. With this board, you can connect various 3V electric components like LED lights, photocell, etc..

The board has an integrated buzzer and an audio jack, which allows you to hear music from the buzzer or with headphones.


  • Extends most I/O ports on micro:bit by GVS pins.
  • Independent outs for I2C interface. Enable to plug in I2C components like OLED, BME280, etc..
  • Integrated buzzer and audio jack.
  • Support Lego mounting holes.
  • Marks each I/O port with silk printing.

Definition of Pins




Introduction of Major Components

Audio Jack

Headphone is controlled by P0 port. Plug in your headphone, the buzzer will disconnect automatically.



The buzzer is controlled by P0 port. Plug in your headphone, the buzzer will disconnect automatically.


16 Channel Standard GVS Port

This is a standard GVS interface with 16 channels. It can extend 3V electric brick module.


I2C Port

This is a group of I2C female header, which can connect with OLED module directly.

This is a group of I2C male header.


 Quick Start

Hardware Assembly

Plug your micro:bit into sensor:bit.


Navigate to the programming interface of Makecode online editor. Write your code to make the buzzer on sensor:bit play music.

You can see the whole program from the link here:

Or you can download it from the page below:




Press button A on micro:bit, the buzzer starts to play music. Plug in your headphone to sensor:bit, the buzzer stops playing music, and you can hear the music through your headphone.





Packing List

1 x sensor:bit



Sensor:bit Guide

Collections: Elecfreaks, micro:bit

Type: micro:bit add on