How to read a dynamic Signal in Volts

Other Hardware Science and Measurement
1

Hi all,

I'm looking for some information how to use Arduino as frequency analyser.
I have a function generator in order to make some tests and I wold like to use arduino to get the signals and plot them on the laptop screen in frequency domain.

Could some of you give me some info, where i can find material (theory, hw and sw) on that?

thanks in advance.
d.

2

The Arduino can use the A/D to sample signals in the time domain. You can then use a transform (Discrete Forier, Hartley, Cosine, etc) to transform the signal from the time domain to the frequency domain.

Be warned that because of the limitations of the Arduino you will not get very high frequencies or much resolution.

Here is one example: DFT on an Arduino - YouTube