Grbl

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SoftwareInfoBox Grbl

Type:	CNC firmware
Platform:	Atmega328
License:	GPLv3
Source:	Grbl project
Input Formats:	G-code
Output Formats:	signals for CNC movement
Users:	Mitja

Grbl is a firmware for Atmega328 (the microcontroller on most Arduino boards).

You can send G-code to it via USB serial connection to control a CNC machine or the machine's stepper motor drivers.

The Marlin firmware on many 3D printers is derived from Grbl.