quad turning left and right without touching yaw stick
i`m do not use english, so If i against the courtesy Please acknowledge it beforehand.
i`m flight testing for a month.
arducopter v 3.4.2
problem is my quadcopter is random turning YAW.
pitch and roll is pretty good.
but Yaw is turning left, right about 20~50 degree. without stick touch during hovering.
flight mode is use Alt hold, loiter.
i don`t know why my quad is turning left or right...
i`m already changed another PIXHAWK FC, M8N GPS( external compass ), calibration Motor and compass, rearrange ESC, BEC, receiver and wire.
But same problem is occur.
This problem is making me crazy.
Attach the log.
please help me my problem.
after YAW Autotune, problem is solved.