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Product Overview
The Arduino Uno CNC Shield V4 from Pro Tronix is the backbone of compact DIY CNC projects. This shield sits directly on top of an Arduino Uno, eliminating the mess of breadboards and jumper wires. It features three dedicated slots for stepper motor drivers (like the A4988 or DRV8825) and provides broken-out pins for endstops, spindle control, and coolant signals. Whether you are building a GRBL-based engraving machine or a precise drawing robot, this board provides a stable and organized interface for all your electronics.
Technical Specifications
| Feature | Specification |
| Compatibility | Arduino Uno R3 and compatible boards |
| Driver Support | A4988, DRV8825, and similar Stepper Drivers |
| Axes Supported | 3-Axis (X, Y, Z) |
| Firmware Support | Optimized for GRBL |
| Input Voltage | 12V – 36V DC (Check driver limits) |
| Interface | Digital I/O Pins for Endstops, Probe, and Spindle |
| Mounting | Standard Arduino Shield Form Factor |
| Supplier | Pro Tronix |
Key Features
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Compact Design: Integrates all CNC control logic into a single shield, saving significant space in your enclosure.
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Plug-and-Play Drivers: Modular slots allow you to easily replace or upgrade stepper drivers without soldering.
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GRBL Compatible: Fully supports open-source GRBL firmware, making it easy to translate G-Code into physical motion.
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Extensible I/O: Includes dedicated pins for Limit Switches (Endstops), Emergency Stop (E-Stop), and Spindle Enable.
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Micro-Stepping Control: Features jumper headers under each driver to configure steps for maximum precision.
Common Applications
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DIY CNC Routers: Perfect for small wood or plastic engraving machines.
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Laser Engravers: Controlling the X/Y movement and laser power modulation.
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Drawing Robots (Pen Plotters): Converting digital art into physical drawings.
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Educational Projects: An excellent tool for teaching CNC motion control and G-code basics.
You can see the rest of our available 3D printing and CNC parts from here: 3D Printer & CNC | Pro Tronix
