PX4 Sync / Q&A: Feb 12, 2025

farhang · February 11, 2025, 7:04pm

PX4 Sync / Q&A: Feb 12, 2025
Dronecode Calendar

Agenda

Announcements
Future Events
Flight Testing Update
Release Discussion
Bug Report / Q&A

Announcements

Dronecode’s Yearly Report (2024 Edition)

Future Events

OSS NA 2025 - Denver CO - June 23-25
- CFP Closes February 17th
ICUAS May 14-17, Charlotte, USA

Flight Testing Update

We are running a beta program with Ascend Engineering (Chicago). They will be running flight testing for the community as part of an arrangement with Dronecode

How to reach out to the team

GitHub: Tag user @PX4/testflights
Discord: #flight-testing
Weekly on the PX4 Dev Call

How to Request Testing (GitHub)

Write down the steps to test your issue/pull request
- Make sure to note the risk involved in flying
- Write down things to look out for / anticipate - eg: “we are looking for no yaw jumps”
Add issue/pull request to the Flight Testing project board
Make sure to specify any hardware/software requirements as much as possible

Flight Testing board:

GitHub

Flight Testing • PX4

Flight Testing

Release Discussion

Project Board

For release coordination, we will be using the project board.

Project Board Link

v1.16 Release

Discussion

Bug report / Q&A

PRs needing review

jkuesel · February 12, 2025, 4:00pm

Hi! I have a few questions about GPS performance. I have a few specific questions about

how long it might typically take to acquire satellites, after a cold start? (Obviously will depend on environmental factors)
how I can confirm the firmware version on the GPS modules
and if anyone has any experience with shielding GPS modules via emi tape (or other methods)

I’m using the Holybro M9N Micro GPS and trying to experiment with getting optimal performance across two airframes.

Strangely, I have one airframe that is performing noticeably worse. It takes noticeably longer for the GPS to acquire satellites. I’ve tried swapping the airframes GPS’s as a confirmation. I’ve placed the GPS’s far away from the airframe to limit EMI but am still seeing a noticeable difference.

I think I am using
VER hw: 00190000
VER sw: EXT CORE 4.04 (7f89f7) but am unsure.

Am checking via the printout in ubx.cpp

Here is a picture of my two airframes. Yes, I mounted a gps on a pencil xD