Hi, thanks for the replies. does anyone have any files for example that are not complex? I'm seeing the best frequency meter, but it's very complicated for me now. Greetings

Hi everyone,
I have to do a project where I have to read 4 frequencies at the same time.
the frequency ranges from 0 to 500hz.
I wanted to use esp32s3.
anyone have experience? you can help me?
regards Vito