The Arduino manages everything else on the system as well including all of the temperature sensors and fan motor control.

Arduino Pinout Cheatsheet. Contribute to alsoduck/arduino-pinout-cheatsheet development by creating an account on GitHub.

An open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on an Arduino Mega2560 - marcosncosta1/grbl-Mega ...