Purpose

A fan is very helpful in this hot summer, I’ve built an energy conservation fan which would work when I sit down and stop when I leave from my seat.

Build-up

Building steps:

Please download the io. File if you have Lego studio: The-Energy-Conservation-Fan.io

After assembly, connect with Nezha breakout board, fan, sonar:bit and the PIR sensor.

Hardware connections

Software Programm

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.

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:

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

Result

If the sonar:bit detects objects and the PIR sensor detects the movement, the fans starts working or it stops driving.