I have a problem with my variable pitch quad. And I couldn't find the reason why my quad is drifting away even it is on a flat ground without any movements. Since it is controlled through the pitch angle, wrong control output make it almost impossible to fly with. Especially I don't understand why roll and pitch drift in the actuator_control0 topic until it converge.
Can someone give a hint, in which direction i should search for?
Thanks a lot
(autopilot setup: navio2 on rpi2 connected to 4 servos)