34. Case 30: Adjustable lights#

34.1. Introduction#

This is an adjustable LED light. We can adjust the brightness of the light through the potentiometer, so that the light is at our most comfortable brightness.


34.2. Quick Start#

Materials Required#

Nezha expansion board × 1

micro:bit V2 × 1

Analog Rotation Potentiometer × 1

Rainbow LED ring × 1

Bricks × n

Tips: You may need to purchase Nezha Inventor’s Kit and Purchase Interactive coding accessories pack here. if you want all the above components.

Connection Diagram#

Inset the micro:bit, connect the rainbow led ring to J1 port and the trimpot to J2 port on Nezha expansion board.


Assembly Video#

Video link: https://youtu.be/IDo75YvbOB8

Assembly Steps#






34.3. 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 “nezha” to download it.


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

Step 2#

Programme as the pictures indicate#



Link: https://makecode.microbit.org/_9zD1etLWh36q

You may download it directly below:


After powering on, the luminance level is able to be adjusted by the trimpot.