"Make sure your motors are connected to the APM board in the correct sequence.
I had this, and had made a simple mistake of connecting #3 to the #1 output. "
"I haven't looked at the tlogs yet, but from the video it looks as though one of the motors is dipping.
I had this a couple of times with my quad;
I use an f450 frame with NTM 2816 (1200kV) motors, controlled by Turnigy TY-P1 25a ESCs
The Motors all…"
"Looks unlikely to be Barometer.
With you saying loiter is poor is suggest running a compassmot setup. You will need a power module to get this 100% though. They're a great investment if you haven't already got one. Oh and balance the props"
"Auto trim:
Hold the rudder to the usual arming position, but not for the normal 4 seconds, you need to hold it for about (I think) 20-30 seconds. You will notice the A/B/C lights will start to flash in a different sequence. Take off, and give stick…"
"Hi,
The other frame option (I think its called V - Sorry not in MP now so can't be sure) is more suited to any frame that is not either a '+', 'x' or Hex/Oct.
It was designed with these frames in mind, and has a slightly different tuning to allow…"
"I try and get mine to be at the halfway point between the values. I know my Rx will drift a little (usually +/-3-5) so I NEVER go anywhere near the end points of the PWM modes. too Risky!I don't want my craft going into an Auto if its battery is…"
"Compassmot is a way of programing the apm to compensate for magnetic interference from the wiring, motors, escs etc. It measures the interference and then can use this to ensure it knows which way is North. If you fly eith gps you week find this…"
"Looks good, You could get the ESC's futher away from the APM, and look at removing the red lead from all but one esc (Saves on paralleling the ESC's. This can be bad for the APM.
Remember to run a compassmot if you're using FW V3+"