@xfacta I am expecting a suggestion from you, will you please have a look.
The fact that you have not addressed vibration by any other means than damping the mount suggests that you have not addressed the root cause. As such, I think you are getting somewhat predictable disastrous results. As Shawn and Brandon have stated, over-damping is not the solution here.
In fairness, I did not review the logs, just the overall context of the posts.
There is a lot history in this thread Iām not going to review but in that last log your Roll input, and Pitch for that matter, set up an increasing oscillation indicative of the Rate P&I values being too low. I would put Rate Roll/Pitch kP on an in-flight tuning pot with the low end at default and the high end double that and do some testing. But, thatās just how I do things; you need a good handle on manual tuning to proceed down that path. And, itās time consuming. But if you have been at this for 2 months I suppose you have the timeā¦
Thank you, but I did manual tuning before proceeding to autotune but in alt hold it was stable when I fly in loiter it started oscillating. Later I did quicktune in loiter mode and followed autotune. As a see I didnāt get proper tune even though being run autotune 2 times on each axis .I got PIDs too low later by manual I increased PIDs and made the drone stable. I the second log which I have posted, I have done maneuver for all the axes it was doing good. Later I landed and after Reboot again I tookoff to see performance, in loiter mode slightly I gave roll input at 3m altitude. It started oscillating and toppled and crash. I didnāt get when then drone did stable flight test in 2 nd log with the same parameters after reboot it crashed.
I cant see whatās causing the oscillations in that latest log, But I can see yaw is drifting ahead of the desired yaw heading without any yaw stick input. To me this says there is a physical yaw problem, but I dont see in the motor outputs like we do with a twisted motor mount. Maybe props are in the wrong order or something odd like that.
Get a video of the MissionPlanner motor test when you press āAll in sequenceā and lets see that.
This is the order (A, B, C, D) and the rotations:
Yes I have observed yaw drifting after takeoff as I thought it might be because of internal imu causing the issue or the yaw angle is 6.8 . If I keep yaw angle to default value drifting was not observed. If you see the second log there is also a yaw drifting but while takeoff from ground there is a slight oscillations after which it was stable.
Motor order and directions are correct before takeoff we did motor test on the ground . I didnāt understand after takeoff when I gave slight roll input.it suddenly oscillated and crashed.
In my opinion, this carbon fiber eggshell looks nice but may not be rigid enough.