PX4 Dev Call: November 09, 2022

November 09, 2022

Join us


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

:loudspeaker: Community Announcement

: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 : PX4 has projection errors when vehicle is far away - Jay

When 20km out, you get ~30m altitude error.

  • Simulation is fixed
  • For a ‘new gazebo’: we have a different option too.
  • We could move the ‘origin’ of EKF2, when we are very far away

Q.2 : Idle Throttle not set-able in DShot - Chris

With an airplane, having this motor twitching on the ground isn’t ideal. For D-Shot.

Danger of auto-throttle upon acceleration: Users can get hurt with e.g. Pusher flying wing configuration, if the motor starts spinning unexpectedly!

:construction_worker_woman: Project Updates

P.1 : Fixed Wing revisions - TJ

Has lots of cleanups & improvements.

  • Will add a video to show auto-landing :flight_arrival: & take-off :flight_departure:

Catapult launch: Cool, but be careful and configure it wisely :wink:

P.2 : PR template update - Matthias

  • Reduced amount of text
  • Moved the links / disclaimers into the ‘commented out’ section
  • We should emphasize the need to upload the Log to Flight Review!

Feel free to chime in & give opinions!

P.3 : Arbitrary Mag Rotation - Junwoo

  • It is a real use case, so we can proceed.
  • Real vehicles do have some hacky new rotation enums too.
  • QGC Enums are also offset / wrong - Jay
  • We could also do better in calibration (auto-detect, etc).

Action Item:

  • We should get the mag cal data deletion logic in rcS script.
    • Shouldn’t even be a param, best case scenario.

P.4 : DO_CHANGE_SPEED improvements

:thinking: General Discussions

D.1 : Should we switch to Discord for Meeting?

  • Pros: It’s centralized (we chat & meet in Discord!)
  • Cons: Discord sometimes kicks people out, and therefore not everyone has access.

Action Items:

  1. Silencing the booooop sound when people join Discord video call
  2. Migrating the Discord Bot to

D.2 : RTL when landed - Junwoo

  • Right now: We can place ‘takeoff’ before RTL, to make the vehicle RTL in the air as a workaround.
  • PX4 *officially supports one mission storage
  • But multi-missions are possible by doing some custom stuff :star:

D.3 : Param classifications

Action Item:

  • Junwoo will post about it (discord message link) and create issue to discuss this thoroughly.

:calendar: Weekly Overview

:mouse2: Github

Recently updated Issues / PRs in PX4-Autopilot Link

Pull Requests

:computer: Slack

:phone: Last Dev-Call

PX4 Dev Call: November 02, 2022

:exclamation: High priority queue

Discussion based on: High-Priority Queue · GitHub

:ear_of_rice: Release

V6C stuff - v1.13 release