I have been scratching my head all day with this problem. It seems the pitch stabilization on my setup just doesn't want to work. The roll works perfectly. You can see what I am talking about in the video below. I have tried a new pitch motor, all kinds of different orientations of the IMU, replaced "martinez" board, swapped out IMU, and played with PID in the gimbal tool software. I an using 049B flashed to my board.
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