3 ) Pinout - Eckstein komponente Keyestudio 4WD Mecanum Robot Car Manual

For more information,please resort to following links ：
https://tech.microbit.org/hardware/
https://microbit.org/new-microbit/
https://www.microbit.org/get-started/user-guide/overview/
https://microbit.org/get-started/user-guide/features-in-depth/

( 3 ) Pinout

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