[v1.16 Release Candidate] - Flight Testing & Flight Issues (log archive) #24188
Comments
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From @PX4/testflights No control in stabilized mode. the drone was not reacting to my movement commands. The drone started to slide back, I would pitch forward, and the drone would not react in accordance. Tried to then pull back in case the controls were flip flopped somehow, nothing happened. Crash https://review.px4.io/plot_app?log=fb2ea683-bfaa-449b-991f-58eae53c97dd Drone that was being used (quadcopter, vtol, etc...): quadcopter x500 |
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Wanted to post this here as well. Pixhawk4 with arkflow running 1.16 Video: https://www.loom.com/share/141ee5ee32f64e519b5aaf798f495941?sid=f34c75a7-4a02-4fea-be0c-6a24d3742b98 I fly in position mode with joysticks instead of RC that i did in my initial testing Drone that was being used (quadcopter, vtol, etc...): quadcopter x500 |
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@afwilkin Thanks for the tests. Could you please also add a quick overview of the setup (looking at the log it's a multirotor with optical flow and range finder, no GNSS) and what's the outcome of the flight test from your perspective (e.g.: all good, height oscillation, position drift lower/higher than 1.15). |
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Apologies for the delay, I thought this was in the other PR we were working on. I just updated my comments above |
Re - Stabilization Issue, What caused the crash in my earlier post MIGHT have been more of a heading issue than a broken stabilization flight mode or RC issue. I
This makes me think there might be something about the mag that is feeding in to the heading that is causing some inconsistencies between 1.15.2 and 1.16.0 |
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@afwilkin I had a look at your original log. RC input data looks fine. Translation to setpoints also looks high level ok, tracking is not good and I think this is because the yaw rate and hence also the yaw goes unstable: Could it be that your vehicle's motor mounts on the arm are not rotated the right way or even rotated slightly the wrong way? That could explain the lack of yaw authority even if the propeller turn direction and motor assignment is correct. For reference the motors should be ever so slightly (2-5°) tilted like indicated on my drawing (assuming props turn in default "cleaning" direction otherwise everything is the opposite way): It can well be a combination e.g. the heading estimate had a problem and the lack of yaw rate control authority made it unstable or at least unable to settle in the short flight time. |
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I found proof for my hypothesis with the yaw authority. Two motors are basically idling and the other two carry all the weight and still the yaw turns in the wrong direction. Please verify the airframe according to my scetch. I'm happy to explain if it's not clear. |
❗ About
💡 For the upcoming v1.16 release, we are asking the Community for flight tests. This issue will be used for keeping track of all the tests from the Community.
If you're unsure about upgrading, please read the preliminary release notes on the PX4 docs. Pay close attention to the Upgrade Guide before deciding if v1.16 is right for you.
Pending Issues
❓ Why we need flight testing
🌏 Thousands of people around the world depend on the stable release of PX4.
🖐️ Before every major release, as much testing as possible is needed to ensure that our release actually works!
😯 Simply said, more testing = better release
🤗 We would like to encourage every community member to join us in improving PX4!
🤷 How you can help with flight testing
😱 Even if you have never contributed a flight testing report, fear not! Please follow the steps below for the details of how you can contribute to flight testing.
📑 Flight testing matrix
📖 Here are the table of things we need tests for.
This will constantly get updated, and your contribution to testing the missing slots (tests needed) will be greatly appreciated!
How to flash v1.16 beta firmware
This should automatically flash & reboot your flight controller with the latest v1.16 beta release!
How to share your log
First, retreive the log from the flight controller in QGC Q icon > Analyze Tools > Log Download, and find the log you want to download.
Then:
When posting on this thread, please mention what kind of test it was (especially if it is one of the testing matrix options) & general info behind it!
Questions?
Feel free to ask any questions regarding flight testing in the #dev-team channel in the discord server!
To Reproduce
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Expected behavior
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Screenshot / Media
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Flight Log
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Software Version
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Flight controller
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Vehicle type
None
How are the different components wired up (including port information)
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Additional context
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