What is 3D printer firmware?

Firmware is software directly on the control board of the printer. Interprets G-code and controls motors, nozzle, sensors. Most common: Marlin, Klipper, Prusa FW, Bambu FW.

What firmware does

  • Parses G-code
  • Controls stepper motors
  • Regulates temperatures
  • Processes sensors

Firmware variants

  • Marlin - most widespread
  • Klipper - modern
  • Prusa, Bambu - proprietary

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