sar104 said:Your earlier suggestion, that rotating the compass (-2 x declination) might not be curing the problem entirely because the error may be in some, but not all of the Naza programming that uses declination correction, is a compelling hypothesis. If that is the case, however, then it should afflict all units with the affected software version(s) operated in regions of significant declination, but the number of reports, of what looks like a serious and hard to miss problem, still seems to be rather low, which tends to suggest a hardware issue. Very puzzling.
I take the number of reports to be a representative sample. I'd say 90% or higher of P2x forum users in affected areas have reported they have the problem. Let's say 2 - 3% of P2x owners worldwide are on this forum. I have 67 people as of today. Do the math and that works out to roughly 3,000 users who would report it if somebody explained it to them and asked if they have experienced it. My totally unfounded finger in the wind estimate is DJI has sold maybe 10,000 to 15,000 P2x units to date.
Another way to look at it, there's maybe a couple hundred of us P2x users actively participating here currently. Let's say 250 for argument's sake. 67 of 250 actives is 27%. Assuming that's a representative sample, you could argue that at least 1 in every 4 P2x users has claimed this as an issue or would claim it if they were invited to report it.
jduck said:Count me in!
Two week newbie here and it's been windy in Southwestern Ohio so I was writing it off on that. Tonight there was no wind and I experienced all these behaviors, the TBE, the "J" effect. It got steady after a while but the TBE also came back at times. I have all the latest firmware updates and everything has been calibrated.
And now we wait for a fix. :-\
Thanks for bringing this to the forefront, it didn't seem right that I was having to make so many corrections all the time!
Image of my IMU calibration page...
http://imgur.com/nUfUHBL
Compass mod looks good but declination in your area is pretty low. May 5 degrees. Curious to know if maybe the compass isn't fully aligned or do you have anything close to it?