Holybro X500 crash due to high oscillations

[Maxor]

After doing some Investigation I think I figured the main problem:

Vibrations and high IMU_GYRO_CUTOFF

Hi, I was test flying with Holybro X500, Pixhawk 4 mini, px4 and experienced heavy vibrations. After some Investigation I found out that the parameter IMU_GYRO_CUTOFF was set to 80Hz in S500 frame setup, which is much higher than the default value (=30Hz). FFT Graph for reference. (IMU_GYRO_CUTOFF 70Hz) [bokeh_plot] I Lowered the cutoff to 40 Hz and flew again: [bokeh_plot(1)] And after seeing that the threshold was just above a peak at 38Hz~, I lowered the thresholds of IMU_GYRO_CUTOFF…

It was caused by high IMU_GYRO_CUTOFF/ MC_DTERM_CUTOFF parameters