What is the use of the expansion board?

What is the use of the expansion board?
2024-07-11 00:00:38 The expansion board is divided into IO expansion board and functionality expansion board. The IO expansion board expands the pins of the controller, making it more convenient to use with sensors. All Gravity series sensors in the DF mall can be easily plugged into the expansion board; the function expansion board adds corresponding functions. For example, the Arduino motor drive expansion board adds the ability to drive the motor for the Arduino controller.
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