"FWIW, I think the max voltage you can supply to the Pixhawk is around 5.8v?  You may need to install a separate BEC that supplies 5v to get reliable power to the Pixhawk.  I know the usual recommendation with ESC's on multirotors is to get something…"

"Thanks for the links!  I've already calibrated my power sensor, but I will enable the failsafe features for sure.I don't really understand the log output, but the last line I have (line 14,074) was from my BARO.  Does this mean the Pixhawk lost…"

"So I've gone through the logs, but I can't say I have a better understanding of what actually happened.  I ran the auto analysis on the log and this is the output I received from that:Log File C:/Program Files (x86)/Mission…"

"Good point.  I'll look for this tonight.  I haven't - thus far - looked at the logs.
-Erik"

"Good suggestion.  I will review the Pixhawk logs and see if I can determine if it lost power in the air or not.  I'm pretty new to this, so wasn't even thinking that was an option initially.
I think I'd like to configure FAILSAFE like you have.  Any…"

"I would check your props.  Are they installed and moving the correct direction?

Also, have you performed an ESC calibration?

Regards,Erik"

"Stu,

I'm happy to report that the test flight was successful!  I did have a few surprises (rudder, pitch, and roll were reversed somehow), but I was able to bring it down safely and reverse those settings on my transmitter and had an easier time on…"

"Greg, Stu,Thank you both very much for your help.  I spent quite a bit of time reading through the wiki, but somehow skipped over the ESC calibration step.  To be honest, this project has been fairly overwhelming.  Having next to no experience with…"

"To be honest, I have not tried swapping the motor leads at the ESC or Pixhawk yet.  I was going to try that first, but wanted to check with the experts first.

However, I have not done anything with ESC calibration yet.  How would I go about doing…"

"This was really helpful, thank you!  I was able to fire up the hexacopter when I got home from work today and with the motors running, I never disarmed.

Now I have a new problem, I can't takeoff!! :)
http://diydrones.com/forum/topics/cannot-takeoff"

"Will do, thank you for the feedback!  I just spent so much time and money on this build that it's making me paranoid to finally fly it. :)

Will test it out soon and update.

Regards,
Erik"