I am hoping someone could maybe give me a few ideas on some problems I have been having with my new build:
2014 3DR Quad Frame Kit
3DR APM 2.5 w/external compass/gps (trace cut on APM board)
3DR 880Kv black motors
QBrain 4x20A ESC (all calibrated)
4S 5200mAh liPo battery pack
10" x 4.7 APC Props from 3DR
The apm was on an older 3dr quad, so I reset everything to factory defaults and started over. I also upgraded to the latest non-beta firmware today which is 3.15.
I have done all calibrations(accel/compass), compassmot shows 11%, vibrations are low and I am still fine tuning the pids. I did try auto-tune a couple times, but after calibration was done and I had tried the new settings, my quad would wobble like crazy, totally bad settings.
I've noticed that the motors get very warm, almost too hot to touch. Today I was testing out RTL and just before it touched down, less than 3ft from the ground one motor(front right) went completely out, no power so it ended up flipping over. After removing power then plugging the lipo back in, everything is fine, motor starts along with the rest without any problems, I did a short hover and it's fine?
I attached the log from todays tests, I am wondering if I should be going with better esc's, maybe 30amp ones? Possibly different props like possibly CF 10x4.5 ones? The motor temps I am not used to , most the time with my other quads the motors are warm, but not to the point where these ones are.
If someone could please take a look maybe someone can see something I missed, I would really appreciate it.
I had started another post a few days ago from here: http://diydrones.com/forum/topics/3dr-2014-quad-frame-kit-pid-settings