This is my first PCB drawing, and there are a lot of things I don’t understand. I hope everyone will give me your opinions after it is open sourced. I will make corrections and continue to open source it. Everyone can also use it for motor driver verification and learning. After all, it costs 800 yuan to buy a development board. Make your own Mini development board (60) + homemade expansion board (90) = 150 yuan. Motor driver expansion board. There is a 3.3V voltage for use with the mini development board.
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