3-Axis GRBL CNC and Laser Engraving Control Board V3.0, ATmega328P
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Prices updated: 14 Oct 2026
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About this product
A V3.0 DIY control board for 3-axis CNC desktop routers and laser engravers, running GRBL firmware with an ATmega328P (Arduino Nano) master chip. It includes A4988 stepper drivers, a laser output with PWM TTL control, and a 24V output for a 775 motor. It is designed for 3018 PRO, 1610 and 2418 style machines and accepts 12-36V input.
Specifications
- Input voltage
- 12-36V
- Master chip
- ATmega328P (Arduino Nano)
- Stepper driver
- A4988
- Stepper motor support
- 42 and 57 stepper motors, 12V, max 2A, recommended within 1.5A
- Laser output
- 12V, 2P/3P connector, PWM TTL control
- Motor output
- 24V for 775 motor
- Firmware
- GRBL (0.9J USB GRBL controller software)
Frequently asked questions
Which software is used with this board?
The listing says the board is managed by GRBL 0.9J USB controller software and provides a download link for compatible software. Use that GRBL-based software to send G-code over USB.
How do I set the stepper current safely?
The listing recommends keeping each stepper motor within 1.5A, although the driver supports up to 2A. Set the A4988 current limit (Vref) on the board before connecting the motors, and keep the 12-36V supply within the stated range.
