14. Case 13: Lively Music

14.1. Introduction

We can adjust the frequency of the buzzer sound through the potentiometer. Try to create unique music by turning the potentiometer!


14.2. Quick to Start


Nezha expansion board × 1

micro:bit × 1

Trimpot × 1

RJ11 wires × 1

Bricks × n

Connection Diagram

Connect the trimpot to J1 port on the Nezha expansion board.


Assembly Video

Video reference for building:https://youtu.be/G0hycQ2rxCk

Assembly Steps








14.3. MakeCode Programming.

Step 1

Click “Advanced” in the makecode drawer to see more choices.


We need add a package for programming. Click “Extensions” in the bottom of the makecode drawer and search with “Planet X” to have the package downloaded.


Note: If you met a tip indicating it might be deleted due to incompatibility, you may continue as it indicates or create a new project in the menu.

Step 2




The tones could be adjusted via the trimpot.