3DV4 CNC Shield V4 + Nano 3.0 + 3pcs A4988 Reprap Stepper Drivers Set

• The Arduino CNC Shield V3 is this.
• This extension board can be used with Arduino UNO, 3D printers, and engraving machines.
• It features a driver expansion board.
• It can drive four A4988 stepper motors and has four slots in total.
• Only two IO ports are required for each road stepper motor.
• Stated differently, three stepper motors can be effectively controlled by six IO ports.
• incredibly practical to use.