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10v trigger for strobe

Discussion in 'Electronic Design' started by Tim, Jun 5, 2007.

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  1. Tim

    Tim Guest

    I have a strobe light which has a xlr input for a 10v trigger. I want
    to get this to flash in time to some music, I thought i could make a
    cuircuit which would high pass a audio signal so i just get the hi
    hats / cymbols and use this to switch a 10v charge. I dont have much
    experience, so i need something simple or a schematic to follow. I
    was also thinking about getting a pic like the arduino or pic16f84 and
    writing a program to similar effect. Advice and help much appreciated
  2. Tim

    Tim Guest

    I guess i really have two questions

    How do i make a line level high pass filter?

    can i then use this signal on the collector of a transistor, what type
    of transistor should i use?

    thanks again
  3. D from BC

    D from BC Guest

    I've passed this request onto the research team.. Their working hard
    on the problem right now.. I should have an answer in 1 week :)
    But seriously..

    So you want a flash on the ssss ssss sss sounds...mmmm.....
    I'll guess 2nd order HP active filters and a peak detector??

    Maybe use a PC sound card?
    D from BC
  4. Tim Wescott

    Tim Wescott Guest

    I wonder if the "experimenter's notebooks" that Radio Shack sells would
    cover the pieces for this.

    Have you searched the web for information?

    You need to high-pass, then you need to level detect, _then_ you need to
    trigger your strobe. You'll want some sort of automatic trigger level
    setting so that you can turn the music down when the neighbors complain
    yet still get your flashing lights.

    A PIC wouldn't be able to keep up with the high-pass filter part, unless
    that was _all_ it was doing. I'd either leave the PIC for another
    project or use it _after_ the signal has been high-passed and level

    I'd also look for a circuit first, and only try to invent one if I
    couldn't find something that looks probable.


    Tim Wescott
    Wescott Design Services

    Posting from Google? See

    Do you need to implement control loops in software?
    "Applied Control Theory for Embedded Systems" gives you just what it says.
    See details at
  5. Marra

    Marra Guest

    I would go for a low pass filter to catch the drum beats.
    If you use HF you might get continuous triggers which are too fast for
    the strobe.
    You dont even need a PIC, just use the output of your filter to drive
    the trigger.

    I have used to sound to light systems on my disco laods of times.
    Look up "sound to light"
  6. DaveM

    DaveM Guest

    You're looking for an old fashioned color organ. Surf over to and choose the one that suits
    the level of your construction ability. Use only the high frequency channel for
    the cymbals.
    Dave M
    MasonDG44 at comcast dot net (Just substitute the appropriate characters in the

    Life is like a roll of toilet paper; the closer to the end, the faster it goes.
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