Product Description
The motor direction is opposite to that of A4988 and DRV8825, please adjust the firmware or adjust the motor wiring if you want to change A4988.
Dir/step mode used in the printer control board, please pay attention to set the jumper cap MS1 MS2.
Please connect the power supply when measuring voltage as well, do not connect only the USB power.
Verf measures the voltage of Gnd and potentiometer middle.
Please pay special attention to the direction, do not insert wrongly.