A4988 V3 Engraver Drive Shield 3D Printer CNC Drive Expansion Board
This expansion board as a driver expansion board, can be used for engraving machines, 3D printers.
PWM Spindle and direction pins. 4-Axis support. Runs on 12-36V DC
Stepper motor wiring as follows: 2A, 2B is a group (red, green), 1A, 1B is a group (blue, yellow).
If want to change direction, can be change the position of one group , for example 2A, 2B mutually exchanged.