Hi everyone. I'm building my first autopilot/pixhawk plane and I'm a bit puzzled.
I hooked the pixhawk up to my PPM-capable Hitech receiver (http://www.hobbyking.com/hobbyking/store/__27175__2_4ghz_a_fhss_compatible_8ch_receiver_hitec_minima_compatible_.html) and ran through set up. I've got an Aurora 9 radio. I got this receiver to attempt to workaround needing a PPM encoder...but my current theory is that this receiver is torpedoing me somehow.
Flashed the pixhawk with latest stable ardupilot firmware during setup (2.77 as I recall). I used mission planner to run the setup wizard, successfully completed compass/accelerometer/radio calibration...I got all "green" on the pre-arming checklist there. I can see the gps registering my house on the map and the plane responds to xyz tilts appropriately.
I'm setting this up on a stock hk sky eye for now.
3D GPS fix is good, flight modes work great, in manual mode I have full control through the radio just like normal...even got the flaps working on channel 5. Other flight modes work as expected. Nothing cooler than seeing stabilize work the ailerons for the first time.
The weird thing is that I've never seen a green light on this Pixhawk since i've plugged it in. I've got double yellow and 4-red flashes on the saftey button. I can arm it with the button and everything works as described above, but I'd sure like to see green. I would love to diagnose and fix this but I can't seem to find the list of things that cause the arming error (double yellow flash).
Thanks for any/all ideas.