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!

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14.2. Quick to Start

Mterials

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.

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Assembly Video

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

Assembly Steps

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14.3. MakeCode Programming.

Step 1

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

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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.

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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

Programme

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Result

The tones could be adjusted via the trimpot.

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