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.
Nezha expansion board × 1
micro:bit × 1
Potentiometer × 1
Motor × 1
RJ11 wire × 1
Tips: You may need to purchase Nezha Inventor's Kit if you want all the above compoents.
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
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.