The notch filter is configured correctly, nothing more to do there.
But, you have 2 related problems. A significant Yaw bias (twisted motor mounts or arms) and it’s overall underpowered/overweight. See the Potential Thrust Loss message?
@dkemxr thanks for your feedback.
Nice to hear that I set the notch filter correctly.
My quadcopter is exactly 2kg.
The motors I am using are RCTIMER 5010 360KV with RCTIMER CF 15x5.5" props.
I am using a 4s Li-Ion battery 8000mah.
The maximum thrust that this motor/prop/4S combination can give is around 1200g. THere is also a video from a test of this combination https://www.youtube.com/watch?v=HgFtN41MAUg
So I guess my setup should be more than enough and nice balanced. Also i checked and my motors are leveled correctly.
I am also using a QBrain 4-in-1 ESC https://hobbyking.com/en_us/q-brain-4-x-25a-brushless-quadcopter-esc-2-4s-3a-sbec.html?___store=en_us
Is it maybe the reason that I am getting the Potential Thrust Loss message because I have not calibrate correctly the ESC ?
Thank you.,
No, it’s because you have a large Yaw bias (not level) and it’s underpowered. The predicted Hover throttle with that kit of parts and weight is ~66% (should be 50% or less) which is what the log is showing:
Those motors from RCtimer are of very low quality and I wouldn’t believe anything they published regarding thrust. Buy a subscription to eCalc and run the numbers for your self.
@dkemxr ok thank you.
So the motors that should be leveled are motors 1 and 2 , which is those motors as shown in image (i am running quad X motor order) ? front right and rear left
Not necessarily. 1 unleveled motor can cause problems. For sure fix it but you can see that even after you do the average output will be ~1650µs so under demand you will almost certainly encounter thrust loss errors. And when that happens stability is compromised.
@dkemxr i tried to level all motors as much as possible and now i believe they are completely flat…i also tried bigger props that I had and I made a new test.
I uploaded the .bin file log_3_2023-12-17-15-47-57.bin - Google Drive
Do you find it ok now or still anything problematic ?
To me it seemed that in AltHold it behaves nice. But when i switch in Loiter the copter started shaking and acting strange . I had Hdop 0.6 and 17 sats.
Whats that weird behavior when i switch to Loiter ? Maybe the problematic Navio2 with its problematic gps ? Can you find anything problematic in Loiter from the .bin file ?
Thank you very much
