Welcome to GMF!

GMF is a firmware for reprap-style 3D printing and CNC machining. It currently runs on the 4pi board, but is also somewhat compatbile with the Arduino Due.

GMF is somewhat of a testbed for some innovative features, such as:

• model-based heater control with material throughput compensation
• fixed-point exact linear motion control
• parametric extruder advance

Current State

GMF is now ready for first test prints, with working heater control and a simple motion planner. Due to the implemented extruder advance algorithm, even the simple stop-go motion planner is sufficient to produce usable prints.