Serious Problem in the current beta MP

I was having many problems with 3.1.11 MP release. So, rather stupidly, I updated to the latest beta. Most of my prior issues were gone, good.

I do a pre-launch calibration after the accels and barometer have warmed up. I took off (fixed wing) went to Auto and noticed the plane was in a constant roll of +12 degrees! I RTL'd. When I got home I tried to figure out what went wrong. After a couple hours, I quite accidentley found that doing the pre-flight calibration had set "level" for the plane. Well my plane was not level but that's where the IMU thought level was.

Beware if you use the pre-flight cal.

Steven

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • The ft is meters bug bit me too. Luckily I started questioning the giant WP Radius rings before I climbed too high.
    Thanks for the heads up on the preflight calibration change. I don't know the reason for such a change. I use preflight calibration before every flight, I certainly can't be trying to keep the plane level. I can't imagine this is a bug, it must be intentional. There is a parameter that might help. It's called SKIP_GYRO_CAL.

    Steve, you should be reporting these bugs on github so they are tracked.
    Thanks again.
    • Yes, I keep forgetting about github but sometimes when I post a problem or ask for help, it gets ignored. Here there seems to be more help.

      btw, MP 1.3.12 was released and it guess what, "flightdata: PREFLIGHT_CALIBRATION do gyro cal as well". I haven't tested it yet but this could very well mean preflight cal sets a new "level". I don't really agree that this is a good thing.

      Steven

      • Okay, I just confirmed that using preflight calibration in 1.3.12 will reset "level". IMO, this is a really bad idea. Maybe I'm missing something???

  • So Steve - for those of us who launch with a catapult launcher, this can be a serious problem.  Thanks again.

  • Hi Steven:

    Thank you for the post.  I too had issues with 1.2.11 Mission Planner.  The problem I encountered was the fact that instead of flying at the designated 400 feet AGL, it flew to 1,300 feet!

    I have since updated to 1.3.12 and will check test it out this afternoon.

    Thanks

    Bret

    • Yep, I had that too but I knew what it was since I had the same issue on a prior MP update. The update defaulted you to meters! Guess what 3.28 x 400 is? :-))

This reply was deleted.

Activity

Joseph Udofia liked Joseph Udofia's profile
yesterday
DIY Robocars via Twitter
Jan 28
DIY Robocars via Twitter
RT @Heavy02011: ⁦@diyrobocars⁩ : A Home-brew computer club* for Connected Autonomous Driving. talk at #piandmore ⁦@PiAndMore⁩ on Jan 23rd h…
Jan 23
DIY Robocars via Twitter
RT @a1k0n: New blog post! Deep dive into my ceiling light based localization algorithm which runs in 1ms on a Raspberry Pi 3: https://t.co/…
Jan 23
DIY Robocars via Twitter
Great new guide to using @donkey_car https://custom-build-robots.com/donkey-car-e-book-en
Jan 23
DIY Robocars via Twitter
RT @chr1sa: The next @DIYRobocars virtual AI race is tomorrow morn at 9:00am PT. You can watch live on Twitch https://www.meetup.com/DIYRobocars/events/275268196/
Jan 22
DIY Robocars via Twitter
New version of Intel OpenBot! This resolves many of the issues with the first version, including a much smoother tr… https://twitter.com/i/web/status/1352395636369313798
Jan 21
DIY Drones via Twitter
Using ArduRover with an RTK GPS https://ift.tt/2N9I3RO
Jan 18
DIY Drones via Twitter
Jan 18
DIY Robocars via Twitter
Jan 18
DIY Robocars via Twitter
Jan 15
DIY Robocars via Twitter
Jan 15
DIY Drones via Twitter
Jan 14
DIY Robocars via Twitter
RT @Heavy02011: @diyrobocars : A Home-brew computer club* for Connected Autonomous Driving on Jan 23rd, 2021 https://www.meetup.com/Connected-Autonomous-Driving/events/275728684/ #Meetu…
Jan 14
DIY Robocars via Twitter
Jan 14
DIY Robocars via Twitter
RT @Heavy02011: ⁦@diyrobocars⁩ Autonomous Driving Assembly at #rC3. join us at https://rc3.world/rc3/assembly/diyrobocars-f1tenth/ ⁦@f1tenth⁩ ⁦@DAVGtech⁩ ⁦@DWalmroth⁩…
Jan 11
More…