🌟 Product Description
The CNC Shield V3.0 for Arduino Uno is a compact expansion board designed to connect an Arduino Uno with plug-in stepper motor driver modules such as the A4988 and DRV8825. When paired with GRBL firmware, it provides a practical control platform for CNC routers, laser engravers, plotters, and other multi-axis machines. The shield simplifies wiring by combining stepper sockets, microstepping jumpers, limit-switch terminals, spindle or laser control, and auxiliary connections on one board. Stepper drivers, Arduino Uno, motors, and power supply are typically sold separately.
🔑 Key Features
- Compatible with Arduino Uno and Uno R3-style boards
- GRBL-compatible CNC expansion design
- Four stepper-driver sockets for X, Y, Z, and A axes
- Supports A4988, DRV8825, and compatible StepStick drivers
- Microstepping jumper settings for each axis
- STEP and DIR signal routing for precise motion control
- Six limit-switch connections for X, Y, and Z axes
- Spindle enable, spindle direction, and coolant-control outputs
- Global stepper-driver enable control
- Emergency-stop or auxiliary control connections on common versions
- Plug-and-play layout for DIY CNC machines
- Suitable for NEMA 17 and compatible stepper motors when correctly driven
Specifications:
- Board Type: CNC expansion shield
- Base Controller: Arduino Uno / Uno R3
- Firmware: GRBL 0.9 and later, version-dependent
- Driver Sockets: 4
- Supported Axes: X, Y, Z, and A
- Driver Compatibility: A4988, DRV8825, and compatible modules
- Motor Power Input: commonly 12-36V DC, board-dependent
- Logic Voltage: 5V from Arduino Uno
- Microstepping: up to 1/16 with A4988 or up to 1/32 with DRV8825
- Limit Switches: X, Y, and Z minimum/maximum inputs
- Control Outputs: spindle, laser, coolant, and auxiliary signals
- Stepper Enable: commonly Arduino D8
- X-Axis Pins: STEP D2, DIR D5
- Y-Axis Pins: STEP D3, DIR D6
- Z-Axis Pins: STEP D4, DIR D7
- Board Size: approximately 52 x 18 mm, version-dependent
- Board Type: Arduino Uno CNC controller shield
Apps in robotics, electronics and DIY and real life apps:
- DIY CNC routers
- CNC engraving machines
- Laser engravers and cutters
- Pen plotters and drawing machines
- 3D printer motion experiments
- Four-axis positioning systems
- Dual-motor CNC gantries
- Robotic motion platforms
- Linear actuator control
- Small milling machines
- PCB engraving machines
- Automated dispensing systems
- Educational CNC projects
- GRBL-based automation systems
- Camera slider mechanisms
- Real-life precision motion-control prototypes
Important usage note:
The CNC Shield V3.0 is an interface board and does not directly drive stepper motors. It requires an Arduino Uno, compatible plug-in drivers, an external motor power supply, and suitable firmware. Install each driver in the correct orientation because reversing a driver module can damage both the driver and shield. Set the driver current limit before operating the motors, and verify the exact board’s power rating and pinout before applying voltage.
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