Reference
The article serves as a reference guide for the Micro:bit Driver Expansion Board, detailing the use of IIC chips for dual motor and servo control, and includes descriptions of the communication protocol, software library, and API.
Library
Graphical block software library: https://github.com/DFRobot/pxt-motor
Communication Protocol Description
Micro:bit Driver Expansion Board adopts IIC external drive chip to control the motor and servo motor, only takes up two IIC pins and can complete the motor and servo dual control without occupying other resources.
Other Supplementary Information
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