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Arduino UNO CNC Shield

SKU: 0M8SQWUD80
The Arduino CNC Shield features four onboard driver slots, allowing it to control up to four A4988 stepper motor drivers. Each stepper motor requires only two Arduino I/O pins for step and direction control, meaning that three motors can be efficiently operated using just six I/O pins. The CNC Shield V3.0 makes it easy to build projects such as CNC...
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Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Shield Type: CNC Expansion Shield
Model: A4988 Driver Compatible Shield
Firmware Compatibility: GRBL v0.9
Axis Support: 4-Axis (X, Y, Z, A)
Dimensions: 5 × 4 × 1 cm
Weight: 15 grams

Additional Resources

CNC Shield.PDF

FAQ

1. What is an Arduino CNC shield?

|Arduino CNC shield gives an Arduino microcontroller the power it needs to drive stepper motors and run all of the other functions that contribute to the operation of a CNC machine. End stops, spindle speed control, and probing may be included depending on the shield.

2. Does the CNC shield power the Arduino?

The Shield does not power the Arduino, and for good reason for that as some are capable of up to 48 volts, which would kill the Arduino underneath it. You talk to the shield via a USB cable that also supplies the Arduino with the power it needs.

3. How do I use an Arduino Uno CNC shield?

Plug the CNC shield on the Arduino Uno board.

Plug the stepper motor drivers in the X, Y, and Z slots on the CNC shield.

Connect the four stepper motor wires to the CNC shield.Attach the power supply connected to the CNC shield.

4. Does the CNC Shield include stepper drivers?
No. Stepper driver modules (like A4988 or DRV8825) must be  purchased separately.

5. What firmware is used with the CNC Shield?

The shield works with GRBL firmware, an open-source CNC control firmware that runs on the Arduino UNO and converts G-code into step and direction signals.

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The Arduino CNC Shield features four onboard driver slots, allowing it to control up to four A4988 stepper motor drivers. Each stepper motor requires only two Arduino I/O pins for step and direction control, meaning that three motors can be efficiently operated using just six I/O pins.

The CNC Shield V3.0 makes it easy to build projects such as CNC engraving machines, 3D printers, mini CNC routers, and similar automation systems. Designed as a plug-and-play shield, it mounts directly onto an Arduino board without the need for complex external wiring. The board includes four dedicated slots for stepper driver modules, each capable of driving one stepper motor. Since each motor requires only two control pins, integration is simple and efficient.

By stacking the CNC Shield V3.0 onto an Arduino UNO and uploading GRBL firmware, you can quickly create a DIY CNC engraving machine. The shield is user-friendly and compatible with Arduino-based development boards. This latest V3.0 version supports GRBL 0.9 and provides easy access to stepper driver connections via jumper configurations.

Features:

  • Compact and space-saving design
  • Supports stepper motors via 4-pin Molex connectors or direct soldering
  • Compatible with GRBL 0.9 (open-source firmware that converts G-code into stepper motor signals on Arduino UNO)
  • 4-Axis support (X, Y, Z, and A axis — A can duplicate X/Y/Z or function as an independent 4th axis using custom firmware with pins D12 and D13)