"What battery are you using?  Your power module is indicating ~11.5v resting and 10.4v under load.  If this is a 3 cell pack it should be 12.6v when full.  Could it just be running out of power to stabilize itself?"

"Welcome to the asylum from New Hampshire!"

"ATF should work fine.  It may be a bit thick for very cold winter ops."

"There is no calibration or signal the pixhawk could send that would burn your escs.  Do you have multiple bec power from escs in parallel?
Amit said:
i just got 2 motors burned at the same time, Tmotors and castle esc
Its got to do with calibration…"

"In my experience this can be solved by damping the vibrations before they make it to the camera.  And it's not only spinning things that can cause the problem but flexible frame parts are just as important if not more so.  I'm going to assume you…"

"Hey sorry for the slow reply but you will need to cut all of the ESC BEC power wires if you will be using an external BEC to supply +5V to the servo rail.  Alternatively use 1 ESC BEC and cut the rest of them. Dennison said:
That's good to hear.…"

"Hah no worries!  I'm at work, so plenty of time to do other stuff :-)

Once you get it tuned you will be amazed at how much wind it will handle.  I have almost the same build and regularly fly it in 20-30 MPH winds, snow storms, whatever.

Yeah lots…"

"Awesome!  If you open log ending in 18-26 look around timestamp 67441 you can see when battery voltage falls below ~10.7V, RTL engages.  Your battery failsafe is set to 10.7V which is OK, maybe a bit conservative but it really depends on temperature…"

"Personally, I flip the mode switch to cancel rtl. Say if you are in position hold, then RTL kicks in, just flip to alt hold and back to pos hold. The failsafe will keep beeping and flashing yellow, but you'll be able to control it normally (until it…"

"I'm on mobile now so can't look at the log, but the yellow flashing indicates Pixhawk is in failsafe.  The climbing is because then RTL is invoked, the copter will climb to a pre set altitude (RTL_ALT).  All you need to do is switch your mode switch…"

"Well it's not really a coincidence.  Autotune demands large and fast attitude changes which demand rapid RPM changes from the power train.  Any ESC, motor, or battery problems usually show up during auto tune.  Look at it this way, if yout copter…"

"All of mine have been good but they are comparatively low rpm vs yours. I did have a 5215 shake like crazy but it had a bent shaft from an incident that went unmentioned to the mechanic by the pilot."

"My experience is similar to Gary's but before the internet pitchforks and torches come out, OP should contact Patrick at KDE."

"I also forgot to mention that the tentative plan in a Friday-Sunday schedule.  Most of us have full time jobs and other obligations, so hopefully that gives us the best chance for a big crowd!"