Audio Visualizer using ArduinoFFT Library

[johnerrington]

Then why did you post a link to something else?

@robertuci24

When I read its analog signal it's consistently around the 340-370 (1.7V) range,

Perhaps you could show how you have connected it. And what to (ie what "arduino" are you using.

How to make a schematic you can post.

When you submit a question on the forum you will usually need to add a schematic (circuit diagram). The tutorial that follows will explain some ways to create a useful image; however lets start by explaining how to add the image to your post. Its easy. Having created the image all you need to do is : Save the image somewhere convenient - maybe your desktop Start your post, and place the cursor (insertion point) where you want the image to be shown; [upload image to forum] 3: click th…

and how you are "reading" it.

The audio waveform will come out of the OUT pin. The output will have a DC bias of VCC/2 so when its perfectly quiet, the voltage will be a steady VCC/2 volts (it is DC coupled).

So you would expect a reading of around 1.7V if you are supplying it with 3.3V as reccommended.

I'd suggest you start with a simple sketch to read the adc and print the raw data.
and why

Serial.begin(9600);

are you really outputting to a teletype?