CNC Shield V3 Expansion Board for Arduino Uno (4-Axis A4988)

CNC Shield V3 Stepper Motor Driver Expansion Board (A4988 / DRV8825 Compatible)

The CNC Shield V3 is an essential control board designed specifically for the Arduino Uno, serving as the core component for building CNC engraving machines, laser cutters, or 3D printers. It provides a stable and convenient platform to connect and manage up to four independent stepper motors.

Say goodbye to complicated traditional wiring! The CNC Shield V3 drastically simplifies the operation and management of stepper motors, making your DIY automation project more efficient and user-friendly.

✨ Key Features and Specifications

• 4-Axis Support: Supports control for 4 axes (X, Y, Z, A). The A-axis can duplicate X, Y, or Z signals, or act as a full 4th axis with custom firmware (using pins D12 and D13).
• Driver Compatibility: Features four slots for stepper motor driver modules, compatible with A4988 or DRV8825 drivers (Note: Driver modules are not included and must be purchased separately).
• Micro-Stepping Setup: Includes onboard jumpers to easily set the Micro-Stepping resolution for each stepper motor (e.g., DRV8825 can achieve up to 1/32 micro-stepping).
• GRBL Ready: Fully compatible with the latest GRBL version 0.9 open-source firmware, which translates G-code commands into the necessary stepper motor signals.
• Extensive Interfaces: Includes two end stops per axis (6 in total), dedicated PWM Spindle and direction pins, and a Coolant Enable pin.
• Wide Voltage Range: Operates on 12VDC to 36VDC (Note: Only DRV8825 drivers can handle up to 36V; please consider the operating voltage when powering the board).
• Compact Design: Stepper motors can be connected using Molex connectors or soldered directly in place.

⚙️ Arduino Uno I/O Pin Mappings

The CNC Shield V3 simplifies programming by mapping the basic stepper motor control pins to specific Arduino Uno I/O ports.