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Basic:bit for micro:bit three way I/O expansion, mini version

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Basic:bit is a basic breakout board of micro:bit. It has a buzzer and three groups of GVS pins(P0/P1/P2) on board. Each group of GVS pins separately leads out the IO port, 3V port and GND port on micro:bit. Small size with simple structure, it is quite enough for you to complete 98% micro:bit projects.

Quick Start

Material Needed:

  • 1 x micro:bit

  • 1 x basic:bit

  • 1 x Octopus LED Module

  • 1 x USB Cable

  • 1 x GVS wire(Or Jumper Wire)



Fix your basic:bit onto micro:bit with screws and nuts.
Connect Octopus LED module to P1 port on your basic:bit.
Then slide the switch to the speaker end.


Example Code

You can see the whole program via the link below:

Or you can download the program directly from the page below: 

 After saving the above code into micro:bit, the buzzer starts to play the music again and again. At the same time, Octopus LED module twinkles with 1 second space.



  • Voltage: 3.3V (Powered by micro:bit)
  • IO Ports: 3
  • Dimension: 51.7mm x 29.1 mm

Packing List

  • 1 x basic:bit
  • 7 x screws(5 is enough)


Basic:bit Guide