12. Case 11: Line-tracking Car¶
To build a car that could drive along with the black line with a micro:bit.
12.2. Quick Start¶
Nezha expansion board × 1
micro:bit × 1
Line-tracking sensor × 1
Motors × 2
RJ11 wires × 1
Build the body parts of the car¶
Line-tracking module build-up¶
Connect the line-tracking sensor to J1, the two motors to M1&M4 on the Nezha expansion board as the picture shows.
12.3. 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:---
The car drives along with the black line.