36. case 35 Color Recognition Car

36.1. Introduction

To make a color recognition car.


36.2. Quick Start

Materials Required

Nezha expansion board × 1

micro:bit V2 × 1

motors × 2

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 motors to M1and M4 , 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/2VBr3sEPMIg

36.3. 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/_fzaisgJfKKKj

You may also download it directly below:



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