14. Case 13: Lively Music

14.1. Introduction

Make an electronic piano through micro:bit with the trimpot module.


14.2. Quick to Start


Nezha expansion board × 1

micro:bit × 1

Trimpot × 1

RJ11 wires × 1

Bricks × n


Bricks Details


Connection Diagram

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


Build the Device

  • Build a device as the below picture shows.





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

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.