Help & Support

Overview

The latest micro:bit has a built-in speaker, but you can also output sound to a pair of headphones or an external speaker by sending a signal on Pin0. 

Common ways to do this are by using a set of analogue headphones with a jack plug on the end or using an inexpensive piezo speaker

Contents

• Connection

• Programming

Connection

Headphones/Audio jack Connect Pin0 to the tip and GND to the sleeve of the jack. If you have four rings on the headphones, choose the top and bottom rings.	Piezo speaker Connect Pin0 to the red lead and GND to the black lead of the speaker.

There are lots of fun and interesting ways to connect up the headphones or speaker. If you have tried another method, let us know so we can share it in this article

This example by @kgiori shows the headphone jack inserted through the GND ring so that the sleeve of the jack is touching GND. A bent paperclip connects the tip of the jack to Pin0.

This example from Daisy shows tin foil and tape being used to connect the pins to the headphone jack:

Programming

MakeCode

Place a play melody block from the Music menu underneath the on start block to play a melody when the micro:bit is powered on or reset.

Python 

Import the music module and then use music.play() to play a melody when the micro:bit is powered on or reset.

import music
music.play(music.ENTERTAINER)