Keyestudio Micro:bit Mini Smart Robot Car Manual page 45

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Left motor control
Car state
pin (P5) state
Forward 1
Backward 0
Stop 0
Turn left 0
Turn right 1
PWM(P0) Left motor
500 Go forward
500 Go backward
0 Stop
500 Go backward
500 Go forward
Right motor control
pin(P16) state
1
0
0
1
0
Right
PWM(P1)
motor
500 Go forward
500 Go backward
0 Stop
500 Go forward
500 Go backward
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