PX4 Dev Call: May 19, 2021

May 19, 2021

Join us


  • Community Q&A
  • Roadmap
  • High priority queue
  • Release
  • In-Depth discussions


There will be a community survey soon to find out how many users and developers there are, what the open-source projects get used for and so on. Please participate your feedback helps a lot in guiding the right decisions in the future.

Community Q&A

  • Patrick: Does PX4 support a tiltrotor that is NOT a VTOL but an H quadcopter.
    It depends on how much your motors tilt. With small tilts it might work out of the box. If you tilt further you might get it working in e.g. Acro, Stabilized mode but latest at the velocity, position control there need to be some work done in the code to fully support such a platform. @dagar is happy to provide some pointers on the building blocks over slack.

  • Farhang Naderi: Pixhawk 4 PM7 LiteWare SF11 Lidar leads to a boot issue. When unplugged it boots normally. As soon as the I2C and power of the distance sensor is plugged the pixhawk doesn’t boot anymore.
    Suggestion to observe the NuttX serial console during boot, unplug the sensor when it’s hung. Boot without the i2c driver in the startup script and running i2c detection to see if it hangs.

  • @JulianOes : If you have an arm switch configured and flick it to disarm in air when it’s not allowed e.g. in position mode whan not landed, would you disarm as soon as it’s possible because the switch is still in this state?
    @MaEtUgR It was originally designed to only react on events of the switch changing its position for safety such that it will not later on disarm in air because the switch was left in the disarmed state. So the user has to switch it conciusly back and forth to try again. Any arising corner cases from this behavior are mostly not the expected use case e.g. flying position mode with auto disarm using an arm switch but even then they are still safe because it only reacts on the current user input.


Since the core is stable for 1.12 and there’s few commits since the last beta 5 well cut the release candidate, advertise on blog, forum and slack and if there’s no striking issue cut the release at most a week later.


Discussion based on board: Roadmap · GitHub

High priority queue

Discussion based on board: High-Priority Queue · GitHub

In-Depth discussions

For smaller groups expanding technical discussions, stay until the end and follow up.

If you have any feedback or corrections please comment on this post.