I started a new project with a Raptor E550 using a Pixhawk.
I mounted the Pixhawk in front of the frame. Normal orientation.
The GPS was mounted in the tail boom 700mm away from the Pixhawk.
In my first tests the heli was very unstable and was shaking in roll-axis.
I reduced several parameters to get it better.
After a few flights it works but is very nervous.
See attached parameter-file.
ALT-Hold works fine after setting it's parameters.
In Loiter-Mode the heli starts toiletbowling.
Compass calibration is done and works.
I didn't manage to stop it.
Can anyone tell me what to do ?
Is it possible to use AUTOTUNE for my heli so as for other copters ?
Thanks for your help.