Case 11: Line-tracking Car
This is a line tracking car, we can use black electrical tape to paste a track on the white plane, and then make the car drive according to the preset trajectory.
Nezha expansion board × 1
micro:bit × 1
Line-tracking sensor × 1
Motors × 2
RJ11 wires × 1
Tips: You may need to purchase Nezha Inventor's Kit if you want all the above compoents.
Connect the line-tracking sensor to J1, the two motors to M1&M4 on the Nezha expansion board as the picture shows.
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.