"FIXED!
I uploaded the latest beta firmware 3.8 rc6, then figured out that the Frame Type number is off by 1.
Frame Type:0 = Quad1 = Hex2 = Octa3 = Octaquad4 = Y6
The actual correct type identifier for Octaquad is #4. Once I selected this, everything…"

"Parameters UAS003_OCTAPLANE_7_5_17.param"

"After some creative motor mapping, I was able to have all channels working properly.. or so I thought. 

I bench tested and everything seemed fine but its hard to tell while the aircraft is secured down.  I took it outside and attempted  a hover in…"

"I just found some more information over on arudpilot and it seems that a couple people are having the same or similar problems.  

http://discuss.ardupilot.org/t/quadplane-octaquad-servo-buzzing/111...

Any resolution to this? "

"Thanks for the tip.  The problem however, was with the internal compass only.  Since that picture was taken I have rerouted some wires and cleaned things up a bit though.  With a new Pixhawk unit, there are no compass issues and I have been flying…"

"That is interesting to hear about the firmware causing and fixing the issue.  As I said before, I replaced the pixhawk unit itself and the compass problem went away.  I have since sent the suspect Pixhawk back to be replaced.  Maybe if I encounter…"

"Although disabling the internal compass worked, I was determined to figure this out.  I tried moving the Pixhawk up and away from the PDB as far as I could as well as trying a 4s battery and nothing seemed to make a difference.  So, I took a Pixhawk…"

"Just came back from the field testing this setup with the internal compass disabled.  All was good!  
After further review I found something interesting... I was reading the compass mot test graph wrong, the interference levels were actually good…"

"Setting compass_use2 to 0 did not change the outcome of the compass_mot test but if the test is only measuring the internal compass that makes sense.  I will try to fly it today with the internal compass disabled and see what happens.

In reference…"

"Interesting.  I am using a stator gator with futaba gy701 on my Vario right now.  I'd be interested in trying this governor code.  "

"Thanks Rob, I'll give it a try. 
This did not happen with 3.2 though, at least not every single time... maybe once every 20+ times or so.  With 3.3 it happens every time I power up the system..."

"I am using a Futaba 701 governor on my pixhawk controlled Vario helicopter. You have to set up the RSC ch 8 function for pass-through and you can also use the new RSC idle and RUNUP time in AC3.3 to ensure that the rotor head is at operating speed…"

"A question regarding Pre Arm checks...

More often then not, when I power on my heli and connect via MP I get a Compasses Inconsistent warning and obviously cannot ARM the autopilot.  I can see that the headings are good and not drifting.  Sometimes…"

"Could someone explain the Leaky I term to me please?  I have not messed with this setting yet and saw that with 3.3 the default should be a value of 300 when actually it is 0.  One of the first times I tried flying 3.3 I had one instance where the…"