TECS.dspdem and TECS.th oscillations in Cruise mode

ArduPlane Plane 3.9
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MiniTalon%20oscillaition
MiniTalon oscillaition.jpg1068×506 43.9 KB

Hello, This is my first post here. I’ve been using APM’s for a long time and have “upgraded” to Pixhawk. Now that I have logging ability, I am seeing this oscillation on a new MiniTalon. The plane is trimmed out and flys well in manual and also in Cruise mode, but after some time in Cruise it starts to have Elevator and Throttle oscillations.

I have attached the log files. All help is appreciated.
Thanks!
https://www.dropbox.com/s/gki4b30cmidnaxy/2019-06-29%2019-01-31.log?dl=0

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I hope this uploads…previous trys are not showing up :face_with_raised_eyebrow:

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Those posts needed approval, which I have just done, but no log files.
Just do an edit on your post and insert the logs.

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