"Be thankful of the difference.
You are more likely to have problems converting a Phantom due to their cheap non standard ESC's.
If you decide to go the Pixhawk route then get a small PWM to PPM convertor (couple of bucks on eBay) and you can…"
"You have a working airframe, so your build is mostly done.
If you put an older APM in then the Rx will just connect straight to it.
The Pixhawk on the other hand uses PPM input so you need a PWM to PPM convertor.
Stick a GPS somewhere and your…"
"If your compass was out by 180 roll, then yes, this would screw up any auto functions.
Compass is one of the most important, sensitive and troublesome sensors on the aircraft.
Make sure it is calibrated and check the orientation in your GCS is…"
"The copter had real problems with compass variances and EKF in the red.
A lot of vibration as well which either contributed or raised the issues.
When it comes to EKF problems it is out of my area.
You will probably get better answers by posting on…"
Thanks for sharing your experience with your APM flight controller. I have reloaded the firmware, but I had a major time with setting up the compass. My theory in thought was that it may of been magnitive field from my gimble, because I didn't have that problem until I installed the camera gimble. I completed a couple of flight with no problems unit I made some adjustments to the PID on the gimble after that things changed. I am planning on making a test flight without the gimble
because the gimble took a beating after the crash, but repairable.
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