"I have a 2nd 3DR Pixhawk which I test from time to time using the GPS on serial port 2 as the original gps port got ripped off on a flip over.  I tried a few flights on v3.2 and it worked, but didn't feel comfortable enough to fly it that way so…"

"I'm not a code writer so I can't try it, but I'd assume it wouldn't be rocket science to put a selection in their to switch over the main GPS to the secondary connection. 

While I can get a satellite lock on the 2nd connection (with 1st connection…"

"Any idea where I might find some answers? 
3DRobotics told me to by a new one. They didn't mention the serial 4/5 port.

My  Pixhawk with GPS port ripped off and now GPS connected on the serial 4/5 port works, I just don't get feedback unless I'm…"

"Any ideas on the GPS running on comm 4/5"

"I presume that the Zener diode is only for the backup power on the rails. 

In a perfect world, the diode isn't needed if the original 5v is stable and connected?    If that fails, and it switches to the 5v on the rails, then the diode is a safety…"

"I have seen many of those and I could order them later, but I don't have time to wait 1-4 weeks to get it in.  Also, I'm not sure which one I need.  ECalc says at max, I'm going to pull 29.8amps per motor. On a y6, does this mean 180amps?  If so,…"

"Just found your youtube video on octo / pixhawk autotune and then this thread.I've recently started flying a Pixhawk on a quad and starting to gain a little confidence.  I  am curious how your subsequent flights are going, if your flying with gimbal…"

"I wasn't sure so I said the heck with it and went out in the snow with a chair and did the compass outside, just to make sure.

Thank you for the explanation.   I'm just a bit overwhelmed trying to figure everything out with the Pixhawk. Lots of…"