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How to Build a 4-axis CNC Gcode Interpreter for Arduino

4-axis CNC motors

I’ve updated the GCode CNC Demo on Github with an example of how to run 4 stepper motors. It could be extended to 6, 8, or more.

Using the new Adafruit Motor Shield v2 and an Arduino UNO I’m showing how to control 4 stepper motors at once with GCode, the standard language for CNC machines like 3D printers, mills, and lathes. If you are designing your own machine this is the simplest way to get started. The code has four different examples that build on each other to grow your understanding. In theory this system could be expanded up to 32 stepper motors.

6 thoughts on “How to Build a 4-axis CNC Gcode Interpreter for Arduino

  1. Thanks for publishing this. I wrote something similar about 30 years ago to drive a foam cutter. This will give me a good start translating that to C.

  2. hi,
    I am not so good at code. Could you guide me to add a home routine? any pointers that i can follow


    1. all technical support should be done in the forums. thanks!

  3. Hi, Dan. Do you think it is possible to use your system to drive a hotwire foam cutter like this
    Thanks a lot
    Cheers from Brazil
    Silvio Franco

      1. Thanks

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