Keyestudio Micro:bit Mini Smart Robot Car V2 Instructions Manual page 74

What will you see
Send well the test code to micro:bit main board,
then insert the micro:bit main board into the
micro:bit robot shield. Connect a 18650 battery
to the shield, and turn the POWER switch ON.
The 18 WS2812 LEDs are turned on.
The darker the light intensity, the brighter the
white light.
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