V3.5.5 - compass calibration

ArduCopter Copter 3.5
1

Hello.

New to the forum. Thank you in advance your your patience with my learning curve.

I am working on a quadcopter. Have been using an older firmware, and want to switch to V3.5.5

I am using MP 1.3.52.

I cannot seem to get the onboard mag compass calibration to work - does not advance, or change state just sits there. I am accustomed to using the live calibration.

I also notice that compass offsets are no longer “automatic” - meaning I power up and have 0 offsets. Am I missing something obvious?

Thank you again.

2

If you have not been able to calibrate the compass then the offsets will remain a zero.

Have you tried the Transmitter initiated calibration?
Throttle high, rudder to the right (same as arming but with the throttle high).
You get a confirmation beep, and then periodic beeps until the completion tones.
Reboot and your done.

Much easier to do because you can get out in open areas with no interference problems.

3

I’m confused. How about posting a video of what is happening on YouTube and giving us the link?

4

We have been having a lot of issues with 3.5.5 not seeing compass 2. Don’t know if that is intentional or if there is a parameter that we missed? Is that the same issue you are having?

5

An update to my findings.

Still V3.5.5 AC.

Mission Planner V1.3.52 - I’ve installed, reinstalled about 6 times, because I was told there may be an issue with it.

I did get the onboard mag compass calibration to “work” but it continues to only show mag 1 calibrating. On top of that I have huge offsets - one of which over 400

6

Thanks Mike. I’m assuming you still need to move the bird around during this Transmitter initiated calibration.

7

No, the problem I was having was with Compasses Inconsistent errors…

What I am confused about is how were you performing the automatic compass calibration? Did you just click the Start button and sit there waiting for it to move?

8

Thank you all for your comments and patience with my newbieisms…

This issue was that the internal and external compasses I am using are not compatible with Px4 Ver 2

ArduCopter 3.5.5 and 3.5.3 are both using Px4V2, I needed Px4V3

Hope this helps someone else in the future.

Have a great day.