Hi Friends, I’m hoping someone has some clues for me as to what is happening…
New user here. Spend lots of time on DIYDrones.
Long time APM quad-FPV pilot. 100+ Hours. I’m a DIY guy.
Finally put together a plane (so excited):
[ol][li]SkyHunter Mini[/li][li]Pixhawk FW3.3 w/ External GPS/MAG[/li][li]RangeLink RC // 5g8 Video[/li][li] etc…[/li][/ol]
Problem: LONG Story SHORT
TWO IDENTICAL CRASHES!!!
Anxious to have the frame tuned, maiden was hand-launched in AutoTune. About 1min:21s into flight attempting RIGHT 180* bank, PIXHAWK ROLLS INVERTED TO THE LEFT. After momentary loss of control and not enough time to correct, Plane is in trees and cacti.
Crash 2) (Day after)
Fixed bent wing and hand-launched in Stabilize. After a minute of successful Stabilize flight, AutoTune was engaged. After about a minute of AutoTuning (again turning around 180*, but to left) PIXHAWK ROLLS INVERTED TO THE LEFT AGAIN. Anticipating this unknown action, I switched back to Stabilize. Control was returned, but again not enough time to recover. Trees and Cacti.
I stitched the two crashes together in one video. This helps show these un-commanded barrel rolls.
[ol][li]I know the AutoTune wiki says to switch out if flight becomes uncontrollable. But this CANNOT be what they’re referring to… [/li]
[li]I have poured over the .tlogs for many more hours than I care to admit. (No success downloading datafashes)[/li]
[li]As you can see in the graphs/video, I am NOT commanding these hard left turns. Nor is Pixhawk. So why is it happening???[/li]
[li]I cannot find evidence from Google that this is happening to others.[/li]
[li]Notice Attitude.roll is going in the opposite direction as ch1raw and servo1out???[/li]
[li]sys_status.load is >100 only when in autotune mode. Is this normal? Max 115.[/li][/ol]
TELEMETRY LOGS (Too large to upload)
drive.google.com/folderview?id= … sp=sharing
I am at a loss.
I hope someone can catch something I’m missing. It’s gotta be something silly…
Thank you so much in advance for any input!!!