Arduino Uno CNC Shield V3

The UNO CNC Shield with 4x Stepstick Sockets is a comprehensive expansion board designed to transform your Arduino UNO into a powerful CNC machine controller. Based on a robust PCB layout with dedicated stepper motor driver sockets, this shield is perfect for hobbyists, makers, and professionals looking to build 3D printers, laser engravers, CNC routers, and other motion control systems. Its plug-and-play design and extensive connectivity options make it an ideal choice for both beginners exploring CNC machining and experienced builders creating custom automation projects.

Key Features:

• Four Stepper Motor Driver Sockets: Accommodates up to four A4988, DRV8825, or compatible Stepstick drivers in yellow socket headers for X, Y, Z axes and an additional A axis
• Arduino UNO Compatible: Designed to stack directly onto Arduino UNO R3 and compatible boards via standard pin headers
• Power Input Terminal: Blue screw terminal block for external power supply connection (typically 12-36V DC for stepper drivers)
• Microstepping Configuration: Jumper headers beneath each driver socket allow configuration of microstepping resolution
• Reset Button: Convenient onboard tactile reset button for quick system restart
• Spindle/Laser Control: PWM-capable output pins for controlling spindle speed or laser power
• Limit Switch Inputs: Dedicated terminals for X, Y, Z limit/home switches with clearly labelled connections
• Emergency Stop Input: E-STOP terminal for safety shutdown integration
• Compact Form Factor: Standard Arduino shield dimensions (approximately 68mm x 53mm) for easy integration
• Status Indicators: Onboard connection points for monitoring system status
• GRBL Compatible: Works seamlessly with GRBL firmware for CNC control applications
• Stepper Enable/Disable: Global enable control for all stepper motor drivers
• Four independent stepper motor control channels (X, Y, Z, A axes)
• Driver supply voltage range: 12-36V DC (driver-dependent)
• Logic voltage: 5V (supplied from Arduino UNO)
• Current rating: Up to 2A per driver (A4988) or 2.5A per driver (DRV8825), depending on driver selection
• Microstepping support: Full, half, 1/4, 1/8, 1/16 step modes (driver-dependent)
• Maximum of 6 end-stop/limit switch inputs with dedicated terminals
• PCB material: FR4 glass epoxy with red solder mask and white silkscreen labelling
• Connection interface: Female headers for Arduino mounting, screw terminals for power and peripherals

Applications

• CNC Machining: Build desktop CNC routers and milling machines for wood, plastic, and soft metal working
• 3D Printing: Create custom 3D printer controllers with precise stepper motor control
• Laser Engraving: Develop CO2 or diode laser engraving and cutting systems
• Educational Projects: Teach motion control, automation, and CNC programming concepts in workshops and classrooms
• Robotics and Automation: Control multi-axis robotic arms, plotters, and automated positioning systems

Why Choose the UNO CNC Shield with 4x Stepstick Sockets? This shield offers an accessible and cost-effective entry point into CNC control, combining proven Arduino compatibility with professional-grade stepper motor control capabilities. The clearly labelled terminals, flexible driver configuration, and comprehensive input/output options make it straightforward to build reliable motion control systems. Whether you’re building your first CNC machine or upgrading an existing project, this shield provides the solid foundation and expandability you need to bring your ideas to life.