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Electret Microphone - Activate LED's

Discussion in 'LEDs and Optoelectronics' started by sujianhua, Nov 21, 2012.

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  1. sujianhua


    Nov 21, 2012
    Hey folks, so I'm trying to figure out a way to do this without an Arduino.

    I have an electret microphone and I want to have it activate about 5 LED's for 10 seconds when it hears sounds above a certain level.

    I'd like the user to be able to turn a knob to adjust the sensitivity level.

    What kinds of parts do I need? I have some transistors and diodes, not sure if those are any use for this heh.

    Thanks in advance.
  2. KJ6EAD


    Aug 13, 2011
    If you Google "sound to light" or "color organ" you'll start to find some circuit designs and kits that do most of what you want.
  3. wingnut


    Aug 9, 2012

    Attached Files:

    Last edited: Nov 22, 2012
  4. Wheelie016


    Nov 20, 2012
    Check out Afrotechmod's Comparator tutorial and clapper circuit video tutorial. And then check out his peak detector vid. Should be just what you need. Hope it helps. :D
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