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I designed the board in order to be screwed to the back of a NEMA17 motor, so I had a limited space to fit all the components and connections.
To connect the Stepper Motor to the board you need a 2mm Pitch JST-PH Connector. There are 4 buttons on the left side of the board: 2 of them for Programming and 2 others to control the motor. To power the board you need a 2.1mm Barrel connector. Theres also a female dupont connector on te backside of the board to program the ESP via UART.