Notch filter is not a notch filter?

[guglie]

I’ll share also here, as it’s related

IMU Filter Tool

Hi, I want to share a simple python tool to apply FFT to raw IMU logs and then test various filters. I’m also testing spectral analysis to see how FFT changes over time: [gyroscope%20X%20spectrum] I can clearly see at least 3 different curves, I think relative to the resonance frequency of 3 motors, with their harmonics above. If you think it can be useful, just tell me where to put it and I’ll make a pull request

ArduPilot IMU Filter Tool