CNC Shield Board + 4Pcs A4988 Stepper Motor Driver For Arduino 3D Printer
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- Each road stepper motors only need two IO ports
- This expansion board as a driver expansion board, can be used for engraving machines, 3D printers.
- It is a total of four slots, can drive four A4988 stepper motor.
- 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.
- Note: When inserting the A4988 module, must be careful not to insert opposite