I have a quadcopter that I designed and built from scratch. Its quite large and holds a NEX-5N up the front and a 5S 10A battery at the back, so the weight is quite biased in the pitch rather than roll.
Here’s a picture
Im on PH copter 3.3
My hover is at about 55%
When I hover in alt hold or pos hold, it is very steady, but when I try to auto-land, it starts to oscillate back and forth in pitch at an exponential rate, until it finally just loses control.
When I fly into the wind, it seems to be a bit more stable, but when I turn it round, it starts getting wobbly. Im not sure if it’s me or the FC though.
I had a slight crash a few weeks back due to this, and have now re-built, and am still having these problems. Im a bit worried if I try doing an auto-tune that i’ll have problems and crash, so im hoping I can get some advice on how I should manipulate my PIDs to get it a bit more stable before doing auto-tune, or if there is anything else that I might be able to change.
Here are my logs:
Link to logs
Thanks in advance.