color organ


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  1. #1
    Join Date
    Feb 2010
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    17

    Default color organ

    Hi all,
    I want to make an 8 channel color organ based on a pick. 8 leds sync to a music input. Which pic I’ll use don't matter at this point (I have a nice collection of pics) I just want a general idea, directions or a sample code will be appreciated.

    My idea is to sample the analog input (music) for frequency and amplitude:
    1- Measure the frequency to determine which led is on or off (PULSIN).
    2- Measure the amplitude to determine the brightness (ADC then pwm).
    That was my idea but if you guys have any suggestion or a link please help!!!!

    In advance I thank you for any ideas or better approach to make this projects.


    Best Regards,
    Joe

  2. #2
    malc-c's Avatar
    malc-c Guest


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    Joe,

    There is another approach. Rather than have a frequency based sound to light you could set it up as a chaser with lots of pre-set programmed patterns.

    If you then used a low pass filter and then a peak detection circuit you could use the bass beat as a trigger to step through some pre-set patterns This is what I used a few years back when I did something similar when I wanted a light system for my wife's birthday party.



    Have a look at my site http://micro-heli.co.uk/ the electronics page contains some PBP code and schematic which might get you started.

    The filters were based on the following schematics





    Full details on the following web site http://sound.westhost.com/project62.htm

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