I would like to create a project using LED bars to create a music spectrum the kind that lights up to the different frequencies of the music. I want to hook this up to my hi fi car stereo. First , I know nothing about LED's and Arduino and has always been facinated by LED's, second I am a quick learner. Can someone point me in the right direction if this is possible. Can the setup be powered by the car battery or regular 9V type batteries? Any help or information on previous posts on a simuliar project or topic is appreciated.
I do not see any reason to use Arduino for this, of course the spectrum analysis is not the right task for it.
Let try some op-amp based frequence filters.
I have no idea of what you are refering too. What equipment does this involve, where can I see pics of what you are refering to
I mean something like 50W Power Amplifier with LM3886 - Electronics-Lab.com
There are three filters : for low, mid and high frequency and three ICs driving 5 LEDs in a bargraph.
Another is here : Audio Spectrum Analyzer - Circuit Desgin Project | PDF | Electronic Filter | Electronic Circuits
It looks nice, 10 x 10 matrix (10 frequencies, every has 10 leds) , theory explained, whole circuit plus pcb ...
Or try YourITronics » Blog Archive » 20 Band Audio Spectrum Analyzer
They offer it as a kit or assembled- see their eshop.
I've seen the Itronics one. But this is not suitable to what I want to do. I want to be able to use individual LED bars strips where I can lay these strips to the contour of my car trunk lid. the itronices is fixed and a display. As for the 3 channel example, I would rather have the ability to have at least 7 to 10 channels. The Scribd, wow I guess you have to be a scientist to build that one, which I am not. I thought the Arduino processor you could program to light up an led strip for each frequency. If I am off base here, then I guess I need to get educated better on this stuff. Most claim the Ardunio can do almost anything, now I guess not.
Yes you should do some more research on what the arduino can, and more importantly can't do. If you search for "sound" "music" etc on the arduino forum (don't use the inbuilt search, use google + the "site:" command) you'll see quite a few discussions on why arduino isn't suitable for sound/frequency analysis.
Of course, the LED side of it would be no problem.
You could probably use the propeller chip from parralax also.
not sure never play with it though
Patgadget