PX4 Dev Call: December 14, 2022

December 14, 2022

Join us

Please join in the Discord voice channel โ€˜Generalโ€™ :sound:

Agenda

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

:loudspeaker: Community Announcement


:tada::santa: Holiday Break

No meeting on December 28th

: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 : ROS2 Messaging best practice - Theo

For my PhD thesis, I need to simulate a network of UAVs (mostly quadcopters, but can be heterogeneous) in order to improve exchange of heavy data without impacting controls of the fleet (e.g. video dissemination).

Goal: Controlling fleet of drones

SW: I plan to build a simulator based on Gazebo for physics and NS3 for network protocols simulation. ROS2 will help me move towards real-world experiments swiftly (SITL โ†’ HITL โ†’ IRL). I work on Ubuntu 22.04 (ROS2 Humble), ideally I would like to containerize my simulator to have easy portability to servers.

HW:

  • 4 x Holybro PX4 Vision
  • No mission computer onboard the drone

Questions :

I tested the new messaging scheme, based on FastDDS between ROS2 and PX4, but also read that โ€œFast DDS is not intended to replace MAVLinkโ€, and notice that the MAVROS library is not regularly maintained.

What is the recommended messaging system : MAVLink vs FastDDS ?

Answer: Using MAVLink will be better.

If I choose MAVLink, is it recommended to use MAVROS Library with ROS2 ?

Answer: If using ROS2, micro-DDS can be used. But using it over a lossy network can be unstable.

Q.2 : Fixed wing rate control module

  • Jenkins keeps failing
  • Still out of flash

Action Items:

  • Thomas will give a review

:construction_worker_woman: Project Updates


P.1 : RC Paramotor project :parachute: - Junwoo

Manual control at this stage, will put PX4 on it on Thursday

:thinking: General Discussions


D.1 :

:calendar: Weekly Overview


:mouse2: Github

Recently updated Issues / PRs in PX4-Autopilot Link

Pull Requests
*
Issues
*

:computer: Discord

:phone: Last Dev-Call

PX4 Dev Call: December 07, 2022

:exclamation: High priority queue


Discussion based on: High-Priority Queue ยท GitHub

:ear_of_rice: Release