PX4 Dev Call: September 28, 2022

September 28, 2022

Join us


  • Community Announcement
  • Community Q&A
  • Project Updates
  • General Discussions
  • Weekly Overview
  • High priority queue
  • Release

:loudspeaker: Community Announcement

Discord migration effort

Try out the server here:

Progress tracked here:

  • Lots of cool bots
  • Matrix could be an option as well
  • But Discord is very nice (e.g. Ardupilot uses it)
  • Linux foundation could be helpful for Matrix version bumping up as well - Mark
  • Try out matrix if you are interested: https://element.io/

Matrix migration effort

Check out how the Matrix works as well! It’s not as bad as you think :wink:

:people_holding_hands: Community Q&A (No deep technical discussions)

:exclamation: Guideline for asking a Question

  1. Specify what you are trying to achieve
  2. Specify what environment / platform you are using
  3. Prepare a Link or Document to help understand if possible
  4. First, ask the question on the Slack or create a Github Issue!
  5. If you take over 5 minutes for the question, please continue in Slack or a Github Issue.

Q.1 : Pixhawk 6C compass calibration not working

  • Have to calibrate everytime it boots up
  • Check for mag_worker_data, after having the logging set to ‘debug’
  • Also affects v1.13
  • If SYS_AUTOCONFIG is being force-set, it will force re-setting the Compass calibration data

Q.2 : Doing Mission ‘push’ via ROS2

  • Mission waypoint push was possible via MAVROS, how do we do that via ROS2?
  • For example, pushing JSON file getting pushed via MAVROS to PX4
  • TODO: @mwbb will create PX4 Github issue to track which MAVROS features would be needed for ROS2 DDS bridge features.


:construction_worker_woman: Project Updates

P.1 : CM4 Integration in progress

  • CM4 <> FMU v6x serial connection works
  • Ethernet also works for both Companion & FMU

P.2 : Fixed-wing focus call from yesterday

P.3: Gazebo improvements - Ben

  • Now we can drag & drop models through Gazebo
  • Beforehand, the SITL Gazebo was outdated
  • Gazebo Ignition is now called “GZ” (OSRF’s decision)
  • Using this, you don’t need to use SITL Gazebo at all. Uses native Gazebo’s simulation feature
  • This allows you to ‘pause’ the Simulation properly without memory leaks / very fast to launch
  • Now we don’t have to keep track of DAE / STL, with this feature.
  • Currently, Quadcopter Plugin was adapted with the PR above.
  • Fixed-wing Plugin exists, would appreciate any tests!
  • Help on adding more vehicle types would be much appreciated :+1:

:thinking: General Discussions

D.1 : FMU v6x Bootloader UART port PR

  • Should we switch to TELEM2? (Holybro CM4 case)
  • Or, how do we support both TELEM1 and TELEM2?
  • TODO: Scan through UART ports & automatically detecting baud rates
  • We need to have a robust auto-baud-detect mechanism - Chris
  • Bootloader’s documentation (baud-rate and ports) is not good yet
  • TODO: Add TELEM2 921600,

:calendar: Weekly Overview

:mouse2: Github

Recently updated Issues / PRs in PX4-Autopilot Link

Pull Requests

:computer: Slack

:phone: Last Dev-Call

PX4 Dev Call: April 27, 2022

:exclamation: High priority queue

Discussion based on: High-Priority Queue · GitHub

:ear_of_rice: Release

1 Like

If we can discuss these in case unsolved:

This is my concern as well:

Relevant maybe:

Added the issue: