(5)Test Results:
Download code 2 to the micro:bit, when only the left TCRT5000 infrared
pair tube on the line tracking sensor detects a white object, the micro bit
LED dot matrix displays a "←" pattern, and the indicator light on the left
side of the tracking sensor lights up;
When only the right TCRT5000 infrared pair tube on the sensor detects a
white object, the micro bit LED dot matrix displays a "→" pattern, and the
indicator light on the right side of the tracking sensor lights up;
(How to download? How to quick download?)
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