AJMRTC 2Pcs CNC Shield V3 Stepper Motor Driver Expansion Board, A4988 Compatible Engraver Drive Shield for Arduino UNO, GRBL Control Board for CNC Router, Laser Engraver and 3D Printer

AJMRTC CNC Shield V3 is a professional stepper motor expansion shield designed for Arduino UNO controller. It adopts stack-on structure, which can be directly plugged onto the Arduino mainboard without complicated wiring. It reserves 4 sockets for stepper drivers (drivers NOT included), supporting X, Y, Z and A 4-axis linkage control. It works well with GRBL open-source firmware to parse G-code and output step/direction signals for stepper motors. Multiple limit switch interfaces are preset for homing and overtravel protection, plus PWM spindle speed control and coolant switch control pins. Jumper pins are available to set micro-stepping resolution according to your driver selection. It is widely used for DIY CNC routers, laser engraving machines, drawing robots, small 3D printers and other precision motion control projects.

Specifications

1. Model: CNC Shield V3 Expansion Board
2. Quantity: 2Pcs
3. Compatible Mainboard: For Arduino UNO
4. Supported Driver: A4988, DRV8825 Stepper Driver (Drivers Not Included)
5. Axis Channel: 4-axis (X/Y/Z/A)
6. Firmware Support: GRBL Compatible
7. Motor Power Input: DC 12V - 24V (For A4988)
8. Function Interfaces: Limit Switch, Spindle PWM, Coolant Control
9. Microstep Setting: Adjustable via Onboard Jumpers
10. Application: CNC Router, Laser Engraver, 3D Printer, Motion Control DIY