I have set up an Anaconda platform with PX4 running latest arduplane 3.4.0 and everything looks to be working just fine except one annoying thing:
When in Stabilize, all surfaces works and response correctly except one Vtail surface which barely moves.
when in manual mode all surfaces moves as requested.
VTAIL_OUTPUT = 0, as i mix in my radio.
I have fiddled with every possible parameter value, PID's, reverses, trims, you name it - nothing fixes this odd behavior. looking at MP status screen i see that Ch3out (Half of my Vtail) value (when in Stabilize mode) is not changing when i'm pitching the model up/down during preflight checks.
What am I missing here?
Thank you Andre.
Following your advice i have disabled Vtail mixing in my radio, and enabled in AP.
All seems to be working fine now, still some more tests are called for.
I was flying with APM2+ for many years and can't recall such issues up until i switched to PX4.
have a nice week and happy landings.