For a robotics project I would like an led light source that sort of pulses or fluctuates with the audio
being played from the laptop. While I know there are spectrum analyzer modules to do this (I have ordered a few from china) I saw someone on the bb8 builders club who used an arduino by running the audio lines into analog inputs of the arduino. Unfortunately, he never replied when I asked him to more fully explain how you take the audio input info going to the analog inputs and translate that out to the led.
Can anyone explain how I can put the audio input into an analog input of arduino and then have an led or light fluctuate or respond accordingly to this analog information?
Some code examples may help.
Thanks in advance for any ideas. I wanted to do this for a simple visual "mouth" for my bots.