Here is what I did with this libary

[donnersm]

Finally finished my setup using this amazing libary.
Thanks you all for answering my questions and your support.
https://youtu.be/bQ7c9Vlhyp0

code and design:
https://github.com/donnersm/FFT_ESP32_Analyzer

[vortigont]

Great project indeed! I'll try to assemble it when time permit. Might contribute some ideas also! :)

[donnersm]

Forgot to say, here is the link to code and design:
https://github.com/donnersm/FFT_ESP32_Analyzer