34. Case 33: Color-controlled Lights

34.1. Introduction

To make a color-controlled lights system.


34.2. Quick Start

Materials Required

Nezha expansion board × 1

micro:bit V2 × 1

Color sensor × 1

Rainbow LED ring × 1

Bricks × n

Tips:Purchase Interactive coding accessories pack here.

Bricks Required


Connection Diagram

  • Insert the micro:bit, connect the color sensor to IIC port and the rainbow led ring to J1 on the Nezha expansion board as the picture shows.



Build a device as the picture shows:



Link: https://youtu.be/I05r5ebvQXY

34.3. MakeCode Programming

Step 1

Click “Advanced” in the MakeCode to see more choices.


For programming, we need to add a package: click “Extensions” at the bottom of the MakeCode drawer and search with “nezha” in the dialogue box to download it.


Notice: If you met a tip indicating that some codebases would be deleted due to incompatibility, you may continue as the tips say or create a new project in the menu.

Step 2

Code as below:



Link: https://makecode.microbit.org/_CoKVCRc3wJJJ

You may also download it directly below:



  • After powering on, the the lights turn on with the color detected from the color sensor.