colorforjune,
I’ve attached the recent PIDs, DF log and parameters. I don’t think the ArduCopter version makes much difference. On a suggestion from the forum I backed down to 3.6.6 at one point to try something but it did not work any better than the latest version. I typically try to stay with the latest version to make it easier for the ArduCopter creators to troubleshoot.
I performed a lot of test flights with a lot of changes to get the SingleCopter to fly acceptably. In retrospect all of the physical changes to the aircraft were good improvements that I just did not know about in the beginning. Same goes for the parameter changes. Learned a lot about stability and CG, landing descent speeds and sensor behavior from this project. Good luck.
Paul
Latest PIDs:
DF log from flight and video above:
2019-07-01 19-17-09.log (987.8 KB)
Parameters:
a53x-1-july.param (14.1 KB)