I have a project that I was hoping would be simple, but I am getting more lost the further I look into it. My knowledge and experience with the Arduino is minimal for reference. I am hoping to get help and direction on what I need to do to get this all working.
I have an Arduino Uno, 4 10v relays, each with an LED light with external power provided by wall all proved to be wired correctly and working. With these lights I am hoping to have each of the 4 turn on and off based on different frequencies of music from a 3.5mm headphone jack coming live from my computer that I will have split to my actual speakers as well.
With that being said, I am looking at getting the Spectrum Shield and additional Stackable header kit so that I can connect the 3.5mm headphone cable for audio input with the added bonus of the sound already being split into frequencies by the Shield. I am under the impression that I may need an inline amplifier to get the intended outcome but am unsure of if I really do actually need that for this project.
Questions Summarized:
So, with the Spectrum Shield in mind, do I need an inline amplifier to help the Arduino recognize the audio waves clearer and if so which one?
Do I need any other major parts from what I have mentioned?
Is there any code or write ups on something like this that you know of that I could grab a link to?
Big thank you for taking a look at this and any help here is a bonus as I am currently drowning in info and would appreciate any form of help here.