pyulog
- Software
- Drones and boats
- Library
A Python package for parsing ULog flight log files, plus command-line tools to inspect, extract, and convert them to CSV, KML, and ROS2 bag formats.
Made by PX4 Autopilot.
Source on GitHub: github.com/PX4/pyulog (opens in a new tab). Facts read at commit ffbe375 (opens in a new tab).
Licenses
- Code
- BSD-3-Clause (opens in a new tab)
Read by Robotheca from LICENSE.md (opens in a new tab) (BSD-3-Clause) at commit ffbe375 (opens in a new tab), on 16 Oct 2026.
- Commercial use
- Yes
What it does
- Parses ULog, a self-describing logging format used for PX4 flight logs.
- Provides ulog_info to show logging times, dropouts, and a summary of logged topics.
- Provides ulog_messages to display the messages logged in a ULog file.
- Provides ulog_params to extract the parameters stored in a ULog file.
- Provides ulog2csv to convert logged topics into CSV files.
- Provides ulog2kml to convert position data into KML files, with optional camera trigger points.
Written by Robotheca from the project's README (opens in a new tab) at commit ffbe375.
Getting started
- Difficulty
- Intermediate
- How to start
- The project's README (opens in a new tab)
Maintenance
- Status
- Active: a commit in the last 90 days
- Newest commit
- 6 Aug 2026 on main
- Latest release
- v1.2.4 (6 Aug 2026)
Checked on GitHub on 16 Oct 2026.
Links
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.