Purpose

To make a trolly that is able to carry the goods, we can program in the MakeCode editor to give commands such as lifting/putting down the arms, moving forward and stopping driving.

In next course we will make some improvements for an easier operation.

Blocks Build-up

Steps

The-Carrier-Trolly.pdf

Please download the io. file if you have Lego studio: The-Carrier-Trolly.io

After assembly, connect with Nezha breakout board.

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 “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:

Link： https://makecode.microbit.org/_D2291z6iE6Dq

Result

Press button A to lift the arms.

Press button B to put the arms down.

Press button A+B to drive forward.

If taking up the trolly, the micro:bit’s front side would face downward, then the trolly stops driving.