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Crazyflie firmware

  • Software
  • Drones and boats
  • Firmware

Source code for the firmware that runs on the Crazyflie range of platforms, including the Crazyflie 2.x and the Roadrunner.

Source on GitHub: github.com/bitcraze/crazyflie-firmware (opens in a new tab). Facts read at commit b48aba1 (opens in a new tab).

Licenses

Code
GPL-3.0-only (opens in a new tab)

Read by Robotheca from LICENSE.txt (opens in a new tab) (GPL-3.0-only) at commit b48aba1 (opens in a new tab), on 30 Oct 2026.

Commercial use
Yes

Copyleft: Modified source must be published.

What it does: Robotheca's summary

  • Provides the firmware used across the Crazyflie range of drone platforms.
  • Build and flashing instructions are kept in the project's docs folder.
  • API documentation can be generated with the Bitcraze toolbelt.
  • Unit tests for contributions are described in the project's testing documentation.

Written by Robotheca from the project's README (opens in a new tab) at commit 9912584.

Getting started

Difficulty
Intermediate

Maintenance

Status
Active: a commit in the last 90 days
Newest commit
27 Oct 2026 on master
Latest release
2026.08 (20 Aug 2026)

Checked on GitHub on 30 Oct 2026.

Robots that can run it

No robot on Robotheca is linked to it yet. Links come from a robot's robot.yaml, from its dependency files read as text, or from Robotheca's editors.

Robotheca lists software as a reference: nothing is hosted or run here, and every fact links to where it was read.