27. case 23 micro:bit Crawlers#

27.1. Introduction#

Let the children use the building blocks and micro:bit to make a crawling caterpillar. In this process, children could experience the fun of building blocks and get a preliminary understanding of the ratchet structure.


27.2. Quick Start#

Materials Required#

Nezha expansion board × 1

micro:bit V2 × 1

360°servo × 1

Bricks × n

Tips: You may need to purchase Nezha Inventor’s Kit if you want all the above compoents.

Connection Diagram#

Connect the servo to S1 and the micro:bit to Nezha expansion board.


Assembly Video#

Assembly Steps#
















27.3. 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” in the dialogue box to download it.


Note: If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu.

Programme as the picture shows:#



The crawlers move forward after powering on.