{"title":"Arduino CNC Shield V3.51 - GRBL v0.9 compatible - Uses Pololu Drivers","handle":"arduino-cnc-shield-v3-51-grbl-v0-9-compatible-uses-pololu-drivers","url":"/products/arduino-cnc-shield-v3-51-grbl-v0-9-compatible-uses-pololu-drivers","description":"The Arduino CNC Shield V3.51 by Protoneer turns an Arduino Uno into a 4-axis CNC controller. Compatible with GRBL 0.9 firmware, it accepts Pololu-style stepper drivers (sold separately) and supports up to 4 stepper motors for CNC routers, laser cutters, 3D printers, and other precision motion projects.\n\nVersion 3.51 adds noise filtering circuitry on all end-stop and probe pins, eliminating false triggers and allowing the use of non-shielded cable. The compact shield stacks directly onto an Arduino Uno.\n\nKey Features\n\n\nGRBL 0.9 Compatible – Open-source G-code parser and CNC controller firmware\n\n4-Axis Support – X, Y, Z, and A axis (A can duplicate any axis or run independently with custom firmware)\n\nNoise-Filtered End Stops – Filtering on all 6 end-stop pins and probe pin (new in V3.51)\n\nPololu Driver Sockets – Accepts A4988, DRV8825, and compatible stepper drivers\n\nMicro-Stepping Jumpers – Configure micro-stepping resolution (up to 1/32 with DRV8825)\n\n12–36V DC Input – Wide voltage range (36V requires DRV8825 drivers)\n\nCoolant Enable Pin – Control spindle coolant from G-code\n\n\nSpecifications\n\n\nEnd Stops: 2 per axis (6 total)\n\nMotor Connectors: 4-pin Molex or solder pads\n\nPower: 12–36V DC\n\nCompatible Drivers: Pololu A4988, DRV8825, and pin-compatible modules\n\n\nIdeal For\n\nDIY CNC routers and milling machines\nLaser cutter and engraver builds\n3D printer electronics\nAny project requiring precise stepper motor control\n\n\nPackage Contents\n\n1× Arduino CNC Shield V3.51\n\n\n\nImportant: Stepper motor drivers and Arduino Uno are sold separately. An A4988 Stepper Motor Driver is required for each axis.\n\n\nResources\n\nGRBL Firmware (GitHub)\nProtoneer Community Forum\n","vendor":"Elecrow","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":4027,"title":"Default Title","sku":"EC-CDP03051C","price":36.58,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":101,"option1":"Default Title"}]}