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A4988/DRV8825 3D Printer Stepper Motor Driver Control Extension Shield Boards

1. If jumper is hit the position of ON DP,
that means 16 segment (4988) or 32 segment (8825)Jm connected motor

2. Jv connect 5v and 12v-24v power supply

3. Jc E, S, D, G, respectively corresponding to the connection
of the Enable/Step/Dir/Gnd drive signal output