Skip to main content

Case 03: Color-controlled Piano


To make the Nezha expansion board be able to play the different sounds according to the recognized color from the AI Lens.


ELECFREAKS Nezha Breakout Board

Materials Required and Connection Diagram

Connect the AI Lens to the IIC port on the Nezha expansion board as the picture shows.

MakeCode Programming

Step 1

Click "Advanced" in the MakeCode drawer to see more choices.

We need to add a package for programming. Click "Extensions" in the bottom of the drawer and search with "PlanetX" in the dialogue box to download it.

Note: If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu.

Step 2

Code as below:


You may also download it directly below:


The buzzer on the Nezha expansion board plays different sounds aoccording to the different color recoginzed by the AI Lens.