Hi all,
I was wonder if someone could take a look at this log and tell me why the drone starts spinning randomly when flying a mission on auto.
Sorry if I have posted this in the wrong section.
Regards
Dan
I think it’s the radio failsafe that happened some time before the spinning, and lasted for a while.
When the failsafe cleared the yaw channel was right down near 1000pwm and throttle was right up near 1800pwm.
Throttle will be ignored, but yaw input is NOT ignored unless you set the option: Ignore pilot yaw in AUTO_OPTIONS
Obviously that would work but mask the real issue.
The best solution is to work out what’s going on with your radio failsafe and the channels.
“Old” receivers set the channels to how they were when the receiver was bound with the transmitter - this is easy to mess up and not very desirable.
Newer receivers and transmitters have a couple of different options, like No Pulses (desirable).
You are already using SBUS protocol, so see what failsafe options there are. Maybe investigate antenna position too, try to avoid having a radio failsafe at all.
So are you saying that because the drone was in auto and a failsafe occurred it turned off one of the motors? This drone is working on a survey so we had no visual. To clarify as well the pilot did not yaw at all during the auto flight. The only yaws happened at the turns of the mission.
No, no motors affected.
When failsafe cleared the yaw channel was low and caused the copter to yaw (it was commanded).
In auto missions pilot yaw is allowed unless you set that option I pictured.
So the pilot may not be changing yaw on the transmitter, but the receiver did because that was it’s programmed failsafe action - even if by accident when binding.
Ok we will do that. Its just strange you say no motor was affected as when i load the log into uav log viewer, just before the spin the log value goes to zero.(under the motor vaule tab)
But I will take this good news
Graphs the first four RC channels and you’ll see what I mean
CORRECTION
I had that wrong, yaw is high and throttle is low
The result is the same though.
Luckily you didnt change modes to Stabilise right away or the copter would have fallen.
That also make sense as to why it stabilized when the pilot switched to loiter. Do you have any other recommendations for us?
No, just sort out what the receiver is doing.
Read it’s manual about setting failsafe actions.