Mavic Uncommanded wandering

[BudWalker]

Wow....

**** good work there Budwalker! I've never experienced ATTI on the mavic, but I flew many early FC quads many moons ago, as well as some modded RC helis, and it reminded me of that. Just...wandering.

It's interesting you mention performing an IMU calibration. I always check sensor status prior to flight, and had noticed prior to THAT flight, that one of the IMU's was quite a bit higher that the others. Not out of the green, but higher nonetheless. So I performed a calibration, and this happened on the next flight. With all of the analysis performed, and the details you uncovered, I wonder now if I didn't get a bad calibration.

On that note, I have flown it a few times since, and haven't had an issue, but I still wonder why I didn't get an ATTI warning if, for all intents and purposes, the aircraft entered that mode....

Thanks for all y'alls help!!

But, it didn't enter ATTI mode (re @sar104 in previous post). It wasn't just wandering in a random fashion as can be seen from the geoPath in post #17. The Mavic and other post P3 platforms behave differently than the P3 which will switch to ATTI and drift with the wind when confronted with a magYaw/Yaw separation. The Mavic will often try to fix a magYaw/Yaw separation by holding Yaw constant and rotate until magYaw agrees with that constant Yaw.

My suggestion about doing an IMU calibration didn't really have much behind it; only that there were conflicting roll value indications. Since the subsequent flights were without incident it seems unlikely that there is an IMU hardware problem.

 

[MDR019]

Mine does that too but the extent is it will drift to the left by a metre or so, no wind. I find doing an IMU and joystick calibration fixes it but I find I need to do this after 3# flights

 

[Ricapoody]

Were you flying with the gimball cover on? I can see some reflections or sun rays in your video I'm pretty sure that I have read somewhere that the Mavic may react strangely when flying into the sun!