Keyestudio Micro:bit Mini Smart Robot Car - Page 86

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 If detects an obstacle on the left side but not on the right side, the car will turn right.

If detects an obstacle on the right side but not on the left side, the car will turn left.
 If detects no obstacle at both sides, the car will go forward.
 If detects obstacles at both sides, the car will stop, passive buzzer will beep for 0.5 second, then robot car goes
backward for 0.2 second and then turns left for 0.3 second.
3) Test Code