Smoothie is a free, opensource, high performance and modular G-code interpreter and CNC control system for the powerful Smoothieboard 32bits controller. It's designed to be very user-friendly and hacker-friendly. The Source code is on GitHub. ヾ(❀◦◡◦)彡 ..
Smoothieboard v2 is now on Kickstarter ! Get your board here.

The Smoothie project is always looking for help, whatever your skills are, there are things you can do to improve the project with the other volunteers, if you feel like you could give us some of your free time, please contact us, help and working together is what has made this project so neat, advanced and precious over the years, and is very welcome.

Step by step guides

There is also a Pick and Place guide.

Firmware documentation

  • Troubleshooting : It doesn't work (ノo益o)ノ彡┻━┻ ! ! What to do ∩(︶▽︶)∩.
    • MRI : In the very rare case smoothie code crashes
  • Contributing : We need your help !
    • Todo : List of the things that are being worked on in the project.
    • Editing the Wiki : How to edit this documentation and improve it.

The firmware.bin file

Note, Smoothieboards come completely pre-flashed, you do not need to compile or flash the firmware, unless you want to upgrade to a newer version, or to contribute to the code.

More : Windows Drivers, Linux Drivers, Mac Drivers, New Features, Gallery, Smoothieboard Beta Guide

Hardware documentation

Available now : SmoothieBoard, the modular and awesome, smoothie-dedicated CNC controller.

Get a Smoothieboard here

For users

For hackers

  • Modular, event-driven design, allowing to add functionality easily without modifying the core. See the ModuleExample
  • Designed to support non-Cartesian machines
  • LPC1769 leaves lots of room for additional functionality.
  • The mBed functions and additional libraries are available for easy and fast prototyping. But compiles off-line ( using GCC ), not dependent on the mBed online compiler
  • Strict process for acceptance of new code, to keep the project at high quality
  • Heavily commented code


The Smoothie firmware is free and Open-Source software developed by awesome volunteers with the help of the community. If you find this software useful, want to say thanks and encourage development, please consider a donation :


It really helps.

2022/07/17 17:35

Developer documentation