{"product_id":"cnc-shield-v3-expansion-board-for-arduino-uno-a4988-drv8825-compatible-grbl-4-axis","title":"CNC Shield V3 Expansion Board for Arduino Uno A4988 DRV8825 Compatible GRBL 4-Axis","description":"\u003cp\u003eThe CNC Shield V3 Expansion Board turns your Arduino Uno into a powerful multi-axis motion controller. The perfect hardware foundation for DIY 3D printers, desktop CNC routers, laser engraving machines, and custom robotic arms, it stacks directly onto the Arduino Uno R3 footprint and runs seamlessly with open-source GRBL firmware. Four independent driver slots accept A4988 or DRV8825 stepper modules for clean, modular multi-axis control without complex point-to-point wiring.\u003c\/p\u003e\u003cp\u003eThe 4th axis (A-slot) can be jumper-configured to clone any primary axis (ideal for dual-motor setups) or run independently via D12\/D13 for custom firmware. Onboard microstepping jumpers beneath each driver slot allow dynamic resolution switching.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e CNC Shield V3.00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 12V to 36V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupported Drivers:\u003c\/strong\u003e A4988, DRV8825, and compatible STEP\/DIR carrier modules\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxes:\u003c\/strong\u003e X, Y, Z + configurable 4th A-axis (clone or independent)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndstop Connections:\u003c\/strong\u003e 2 per axis (6 total)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Pins:\u003c\/strong\u003e Spindle Enable, Spindle Direction, Coolant Enable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware:\u003c\/strong\u003e GRBL v0.9 \/ v1.1 compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e STEP \/ DIR digital control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm Factor:\u003c\/strong\u003e Direct stack on Arduino Uno R3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eGRBL Pinout Reference\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eX STEP \/ DIR:\u003c\/strong\u003e Digital Pin 2 \/ Pin 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eY STEP \/ DIR:\u003c\/strong\u003e Digital Pin 3 \/ Pin 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZ STEP \/ DIR:\u003c\/strong\u003e Digital Pin 4 \/ Pin 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eX \/ Y \/ Z Limit Switches:\u003c\/strong\u003e Digital Pins 9, 10, 11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle Enable \/ Direction:\u003c\/strong\u003e Digital Pin 12 \/ Pin 13\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbort \/ Hold \/ Resume:\u003c\/strong\u003e Analog Pins A0, A1, A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e4th Axis Jumper Configuration\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClone X-Axis:\u003c\/strong\u003e Connect jumpers across X-labeled pins\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClone Y-Axis:\u003c\/strong\u003e Connect jumpers across Y-labeled pins\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClone Z-Axis:\u003c\/strong\u003e Connect jumpers across Z-labeled pins\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent:\u003c\/strong\u003e Leave jumpers off, control via D12 and D13\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e When installing A4988 or DRV8825 drivers, match the GND and DIR pin markings on the shield to those on the driver board. Incorrect orientation will instantly damage both the driver and the shield.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGRBL-based DIY CNC routers and desktop engraving machines using Arduino Uno\u003c\/li\u003e\n\u003cli\u003eLaser cutting and laser engraving machine motion control\u003c\/li\u003e\n\u003cli\u003eFDM 3D printer motion control with A4988 or DRV8825 driver modules\u003c\/li\u003e\n\u003cli\u003eMulti-axis robotic arms and custom Arduino automation projects\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Includes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 x CNC Shield V3 Expansion Board\u003c\/li\u003e\n\u003cli\u003e1 x Set of Jumpers (for axis cloning and microstepping configuration)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Arduino Uno board and stepper motor driver modules (A4988\/DRV8825) are \u003cstrong\u003enot included\u003c\/strong\u003e and must be purchased separately.\u003c\/p\u003e\u003cp\u003e\u003cem\u003e\u003cstrong\u003eNote: Image is for representation purpose only.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Circuitcomps","offers":[{"title":"Default Title","offer_id":47889429823665,"sku":"CC-001272","price":113.4,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/0937\/9249\/files\/777_copy_c04ec6c6-e59c-4e66-b171-e55d9fea43ac.png?v=1788430009","url":"https:\/\/circuitcomps.com\/products\/cnc-shield-v3-expansion-board-for-arduino-uno-a4988-drv8825-compatible-grbl-4-axis","provider":"Circuitcomps","version":"1.0","type":"link"}