Introduction

To make a color recognition car.

Quick to Start

Materails

micro:bit V2 x 1

Nezha expansion board x 1

360°servo x 2

Color sensor x 1

Rainbow LED ring x 1

Bricks x n

Bricks details

Connections 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.

Assembly

Build a device as the picture shows:

Video reference:

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

Result

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