9. Case 08: Speed Adjustable Fans
Use the potentiometer and the motor to make a knob to control the fan, and you can use the knob to control the speed of the fan.
9.2. Quick Start
Nezha expansion board × 1
micro:bit × 1
Potentiometer × 1
Motor × 1
RJ11 wire × 1
Connect the potentiometer to J1 and motor to M1 on the Nezha expansion board as the picture shows.
Video reference: https://youtu.be/1-FaQU7Yj0k
9.3. MakeCode Programming
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 “PlanetX” in the dialogue box to download it.
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.
Code as below:
You may also download it directly below:
Adjust the speed of the fan via the potentiometer.