DIY 3D Tech

The On-Line Magazine for 3D Printing & CNC

K40 eBay Chinese CO2 Laser Cutter – Flashing the Arduino UNO with GRBL Part 2!

Please visit for more information on this and many other projects! As in this episode we will be we will be looking at slightly modifying the GRBL code (define VARIABLE_SPINDLE) as well as flashing the Arduino with the GRBL firmware.

Looking for your own 40 Watt Laser:

US Ship Arduino CNC kit UNO R3 + Shield + 4 x A4988 Drivers:

Download GRBL here:

More on changing define VARIABLE_SPINDLE as well as flashing the Arduino with the GRBL firmware:

GRBL’s PWM functionality – How to control a laser or variable speed spindle.

Download the Arduino IDE here:

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