I want to read some frequnces, but i do not know how i can do it. For example: if freq=20 hertz, blink a LED. Any oppinions?
Sorry, an analog pin.I want to read a frquency.
I have a microphone conected to A0. If frequency is less than 1 HZ , a led is HIGH.If frequency is bigger than 1 HZ, another led is HIGH.
Can make for me an example code with this library?