"As you saw from the I made it pic, I got flying, swapped the Qbrain out for 4 DJI opto sec's. Not sure if I ha a bad Qbrain or what but it would never sync the motors up, even after multiple calibrations.  My noob question for the day is regarding…"

"Hey Terry, 
I am a little ahead of you in the build, I have mine assembled but haven't had a successful flight yet, can't get the Qbrain calibration to stick.

To answer some of your questions.
The small upright with the hole by the GPS tower is for…"

"Thanks,  I did set up the Pixhawk and Clibrate the Mag and Compass.  I think It must be the esc calibration, as when on the ground and i ever so slowly feather the throttle on the props do not spin up at the same time, I get 2 and then a third and…"

"Any tips for first flight?  I built the Quad and have followed more or less the hardware recommendations.  With the exception of the motors which I pulled from a flawed Quad I got from Kickstarter (The R10).  I have the Q-Brain and PixHawk along…"