Keyestudio Micro:bit Mini Smart Robot Car - Page 57

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2) Programming Thinking
1 At first judge the middle tracking sensor. If it detects a black line, no matter detect a black line on either
side, the micro:bit car always goes forward.
2 If the middle tracking sensor does not detect a black line, then judge the sensor on both sides.
If the left sensor detects a black line, but the right sensor doesn’t, the micro:bit car will turn left;
If the right sensor detects a black line, but the left sensor doesn’t, the micro:bit car will turn right;
If all three sensors do not detect a black line, the micro:bit car will stop.
3) Test Code