I'm having trouble with my gimbal not staying level on my new X5. I'm new to Inspire's, but it sounds as though this isn't a new problem.
Has anyone updated to 1.05 successfully and had this issue fixed? Or is there some other way to fix it? FPV is not on, I've done several gimbal calibrations, even tried to adjust the gimbal roll. None of it works - do a few turns, and suddenly the horizon is off again.
This is normal and I will try and explain why.
A three axis brushless gimbal dynamically adjusts in all three axis in real time irrespective of one particular plane of one axis - that's the whole point of it a being three axis gimbal.
How efficient the correction is will be totally dependent on the Proportional-Integral-Derivative or PID tuning of the gimbal control unit or GCU coupled with the weighting factor or 'trust' value given to the gyros over and above the accelerometers. If a high trust is put into the gyros, this will take less account of the accelerometers. This is good for slow, curved movements and will allow the gimbal to retain horizon level in those sort of maneuvers. However, if too much trust is put in the gyro then it can cause horizon drift during dynamic flight. This is why both PID and trust values are so critical. If you throw into the mix the fact that the Zenmuse X3 and X5 (like the other Zenmuse offerings) are feedback looped into the flight controller you have a very delicate balance that has to be fine tuned.
We do not know whether the algorithms within the Zenmuse are dynamically altering this 'trust' value or whether it is fixed.
In extremely high end gimbals the trust value can be set before a shot so that if the DOP is asking for a slow curving shot the parameters can be set differently to a shot that requires very fast tracking or speedy movement.
I hope that clarifies things a bit and explains why a little horizon drift is normal in use and unless DJI give us the ability to set trust weighting manually will always be there. You would have had it on your X3 but maybe were not so critical or did not notice so much. Now you are conscious of it you will be annoyed by it.