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  • Users: pcawdron
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  1. pcawdron

    Novice: Audio Activated Circuit

    I'm a novice, I don't know much about electronics, but I'm enthusiastic and looking to learn.... I'm trying to find an audio activated circuit like one of those whistle key chains where a loud noise activates the circuit. I've taken one a part, but there appears to be some sort of surface...

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