micro:bit Breakout Board Hookup Guide

Contributors: Shawn Hymel
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The micro:bit, by itself, offers a vast array of possibilities and potential projects, considering it includes an onboard temperature sensor, accelerometer, compass, LED array, Bluetooth radio, and more. However, when you're ready to branch out beyond those initial capabilities, like connecting to an SD card for logging, you'll need to break out some of the pins on the micro:bit's card edge connector. For that, we've got you covered with the micro:bit Breakout Board.

SparkFun micro:bit Breakout (with Headers)

SparkFun micro:bit Breakout (with Headers)


There's also a version without headers, if you care to solder your own or use wires instead.

Required Materials

To follow along with this project tutorial, you will need the following materials:

Suggested Reading

If you have not yet used the micro:bit, check out this guide first.

Getting Started with the micro:bit

March 21, 2017

The BBC micro:bit is a compact, powerful programming tool that requires no software installation. Read on to learn how to use it YOUR way!

If you aren't familiar with the following concepts, we recommend checking out these tutorials before continuing.

How to Solder: Through-Hole Soldering

This tutorial covers everything you need to know about through-hole soldering.

How to Use a Breadboard

Welcome to the wonderful world of breadboards. Here we will learn what a breadboard is and how to use one to build your very first circuit.


A tutorial on all things resistors. What is a resistor, how do they behave in parallel/series, decoding the resistor color codes, and resistor applications.

Light-Emitting Diodes (LEDs)

Learn the basics about LEDs as well as some more advanced topics to help you calculate requirements for projects containing many LEDs.