Elevator and Ailerons on Max positions in Quadplane mode (video)

ArduPlane
1

Hello,

I am building a quadplane with NAVIO+ and the most recent installation of ArduPlane (ver. 3.7.1).

Everything below is in Manual mode and apply to the FBWA mode too.

When the parameter Q_ENABLE=0, the surfaces move as expected.

When the parameter Q_ENABLE=1, the ailerons and the elevator, move to the MAX positions and jitter a lot. The rudder servo jitters and gets hot but otherwise it is behaving as expected.

The servos still respond as they go to the default min and max positions but in the max position it seems they again get dragged to the end.

Has anyone any ideas on this?

Thank you a lot.

Here is a video of the problem:

2

After some more research, it seems that it is related to a known NAVIO issue.

What has to be done is enable the Quadplane mode:

Q_ENABLE=1

Change main loop and RC refresh speeds:

SCHED_LOOP_RATE=300
Q_RC_SPEED=300

disable outputs 5 to 8:

RC5_FUNCTION=0
RC6_FUNCTION=0
RC7_FUNCTION=0
RC8_FUNCTION=0

Put motors for quad on outputs 9 to 12

RC9_FUNCTION=33 
RC10_FUNCTION=34
RC11_FUNCTION=35
RC12_FUNCTION=36