## Resources

1\. BBC microbit MicroPython：[https://microbit-micropython.readthedocs.io/en/latest/tutorials/introduction.html](https://microbit-micropython.readthedocs.io/en/latest/tutorials/introduction.html)

2\. MicroPython：[https://docs.openmv.io/reference/index.html](https://docs.openmv.io/reference/index.html)

3\. math library：[https://docs.openmv.io/library/math.html](https://docs.openmv.io/library/math.html)

## Common Problem

1\.  **The car has no reaction**

Please check whether the batteries are sufficient

Please check whether the wirings are correct

2\.  **Computers can't recognize the USB ports**

Please ensure whether the microbit driver is installed

Please check whether the USB wire is in good condition.

3\.  **Code fails to burn and dot matrix displays expressions**

Please check whether the keyes_mecanum_Car_V2.py library file is imported