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Case 30: Adjustable lights

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.

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​

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​

Reference​

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

You may download it directly below:

Result​

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