http://smoothieware.org/ https://github.com/Smoothieware/Smoothieware
Smoothie is a high performance 3D printer firmware written in Object-Oreinted C++ for the LPC17xx microcontroller.
Contributed LCD screen drivers and new graphical UI for printers with onboard control panels.
Created custom version of Smoothie for the MatterHackers Pulse line of 3D printers. Added support for filament flow sensors, color LCD display, custom graphics, and tighter integration with host software.