This flight is short. And I should have tested from higher up!
I have everything working except alt hold. I can't find a combination of gains that work. It always oscilates.
This time, I put it in loiter, it was stable for about 2 seconds, but when it tried to adjust for horizontal position the altitude started to drop, I think it made a small attempt to adjust, and then just dropped.
I cut to stab, but didn't have time to break the fall. It landed flat, but heavily.
Can anybody make sense of the log? I don't seem to have magnetic or vibrational interference.
I have noticeed that the GPS might not be as stable as it should be, I don't get a satellite count, I think my GPS only has the RMC message. I get a 3D fix and wait for about 3 minutes for the GPS to stablize.
Nothing, nobody? The actual flying starts at about 80% into the log.
Is "alt_err" negative, that is, if the craft is too high, alt error is negative?