Can the arduino detect frequencies?
I want to know if the arduino (any one) can split up the different frequencies and output them, so I can use it as an input to an LED driver (LM3915).
This will allow the LEDs to be at full brightness and respond to the output of the arduino, if the frequency filter is possible.
If not, I will use a series of bandpass filters instead.
I want to make an 8 band spectrum analyser. I just thought that using an arduino would be cheaper.
The schematic I will be using: