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

We have ✅ 3 available of the EF-EF02053 in our Sydney warehouse. An extra 100 units will be available shortly.

Express post delivery (2-5 business days)

Basic:bit is a basic breakout board of micro:bit. It carries 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.


Small size with smart design, it is a perfect match for your micro:bit.

Easily connected to micro:bit and lead out its power and IO ports with screws only.

Lead out P0/P1/P2/3V/GND port on micro:bit board.

Allow you to complete 98% micro:bit projects with three IO ports.

The switch on board controls the ON/OFF status of buzzer.

 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

 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


Basic:bit Guide

The Basic:bit for micro:bit three way I/O expansion, mini version appears in the following collections:

SKU EF-EF02053

Customer Reviews

Based on 1 review
Rob Poulter
Basic:bit for micro:bit three way I/O expansion, mini version

Great little unit, compact and keeps out of the way of the rest of the Micro:bit. Being able to switch between the buzzer and GPIO pin is nice.