Where's info on fixed-wing, two aileron channel setup?

#1

Hi! We’re putting a PX4 into a fixed-wing aircraft model with one channel per aileron. Eventually we hope to be able to use the ailerons as both flaps and ailerons, i.e. +10 degrees down aileron on each side when flying slowly.

Can someone point me to online documentation about how to configure the PX4 accordingly? Can it be done within QGroundControl?

Should I connect ESC/servos into the power management board like this?
MAIN1: Throttle
MAIN2: Left Aileron
MAIN3: Elevator
MAIN4: Rudder
MAIN5: Right Aileron

In https://docs.px4.io/en/airframes/airframe_reference.html#plane there’s a plane Bormatec Maja
by Andreas Antener SYS_AUTOSTART = 2105 that at least has one channel per aileron. So that might be a starting point.

Once I figure this out I’ll happily add to the online documentation…

Thanks-

1 Like
#2

I don’t yet have experience in setting up just an Airplane since all I’ve done are VTOL QuadPlanes. If your choice is the Bormatec Maja, I recommend you follow the wiring setup and then go from there:

Specific Outputs:
MAIN1: aileron
MAIN2: aileron
MAIN3: elevator
MAIN4: rudder
MAIN5: throttle
MAIN6: wheel
MAIN7: flaps

Good luck.

#3

Bormatec Maja worked. We have had several successful flights in manual, stabilized and loiter mode so far. Next step: mission.

#4

I have the same situation, having one servo for each aileron and flap (four servos). I would like to control/trim each independently, so I wish to add a second aileron and a second flap to the standard configuration. How do I do this such that the autopilot can identify which is right and left for autopilot purposes? Thanks.

#5

See my previous post on the airframe to choose and how to wire up the servos.

Good luck.