Keyestudio Micro:bit Mini Smart Robot Car V2 Instructions Manual page 100

What will you see
Send the test code to micro:bit main board,
then insert the micro:bit main board into the
robot shield and connect a 18650 battery;
Turn the POWER switch ON.
The 18 RGB LEDs on the KEYES-2812-18R
module will emit different colors.
The micro:bit robot will follow along the front
object.
Note that the object can only move in front of
the robot, can't turn around.
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