Keyestudio Micro:bit Mini Smart Robot Car - Page 65

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4) Test Result
Send the test code to micro:bit main board, then insert the micro:bit main board into the car shield and connect
a 18650 battery, turn the POWER switch ON.
At this moment, when the micro:bit mini robot car detects an obstacle ahead, the measured result will be
showed on the micro:bit LED matrix.
If the measured distance between an obstacle and ultrasonic module is less than 10cm, the micro:bit LED matrix
will show a big prismatic image;
If the measured distance is greater than 10cm, the micro:bit LED matrix will show a small prismatic image.