Klipper

What it does

API

Klipper includes a JSON-based application interface in addition to its standard G-code interface.checked 11 Oct 2026

Compatibility limit

The FAQ says Raspberry Pi 1, Pi 2, and Zero 1 lack enough processing power to run Klipper well and are not recommended.checked 11 Oct 2026

Configuration

Printer settings are stored in an editable configuration file, so changing a setting does not require reflashing the microcontroller.checked 11 Oct 2026

Hardware

The installation guide recommends a Linux-based host, such as a Raspberry Pi or Debian-based Linux device, and explains that x86 Linux devices can also be used.checked 11 Oct 2026

Integrations

Documented front ends include Mainsail, Fluidd, and OctoPrint, and common slicer G-code from SuperSlicer, Cura, and PrusaSlicer is supported.checked 11 Oct 2026

License

The project describes Klipper software as Free Software and links to its license.checked 11 Oct 2026

Movement features

It supports Smooth Pressure Advance and Input Shaping to improve extrusion behavior and reduce vibration effects on print quality.checked 11 Oct 2026

Printer support

Klipper supports multiple microcontrollers, multiple extruders, and Cartesian, Delta, CoreXY, and other printer kinematics.checked 11 Oct 2026

Purpose

Klipper is firmware that controls 3D printers by combining a general-purpose computer with one or more microcontrollers.checked 11 Oct 2026

Safety behavior

If the microcontroller does not receive heater enablement confirmation every three seconds, it enters shutdown, designed to turn off heaters and stepper motors.checked 11 Oct 2026

Setup requirements

The installation guide says creating a printer configuration from scratch requires significant technical knowledge about the printer and its electronics.checked 11 Oct 2026

Step timing

Klipper schedules each stepper event with a precision of 25 microseconds or better.checked 11 Oct 2026