I know this problem is common but I have done all the basic stuff I can think of. first the gimbal is 2 axis. I am running a larger motor for Roll than tilt for space and weight. Video of the problem -First the gimbal setup with the Camera and Motor wires going through the core of the roll motor. I have since run them on the outside away from the motor in an attempt to solve the problem. - I have Ferrite chokes on both imus close to the controller and close to the frame imu. The two motor wires are wrapped around Ferrite cores. -The power is filtered, I have tried using an external battery and it made no difference in flight. -My current Settings are 80 .1 70 with a power of 200. I started with 80, .26, 45 for good performance not in flight. The settings don't seem to matter unless I turn P or power down so low it doesn't hold the camera. -Adaptive PID doesn't seem to make a difference.
-The new filters might do something but I have no idea what values to use.
What am I missing? I am running out of ideas to fix this problem
I agree with Garug. That's mechanical. The gimbal needs to be reworked, no other solution.
However, if you want to be really sure, you could perform a really cheap test I'm thinking: really low Power and PID, just enough to hold the camera, or directly with the gimbal turned off and tied or blocked axes, see if the shaking is the same...
I forgot to add that, if I turn down the P or the Power low, the problem disappears.
The Gimbal is dampened by 10 vibration dampening balls. One thing I haven't tried is clamping the balls down. I can get the effects to lessen bot not stop. I put a setting that is more pronounced to make it visible on video.
I would try to reduce the number of dampening balls, but difficult to say without really seeing it. Anyway on video it looks like a mechanical problem.
Is the Pitch well balanced? Are the dampening balls equally compressed, i.e. is the gimbals center of gravity in about middle of the dampening balls?
Pitch is balanced good. After the comments I looked at the balls and saw with the weight of the camera they were really flexing a lot. I clamped the whole thing down with screws and nuts and it solved the problem, I'm printing a new top plate that is thicker and carbon fiber and putting ear plugs in all the damper balls. It actually has 20 not 10. When I was testing with a lighter camera I didn't have the issue. I should have realized that.