Hi, See Microphone \ Learning \ Wiring . I have this up on a breadboard, with a 1N4001 diode, according to the diagram, not the drawing (misplaced diode). I have omitted the 1000uF cap across Vin/GND, didn't have one. I'm getting a nice amplified signal on my scope from pin 5 of the LM386, but no…

Arduino dB meter / noise-level meter - circuit?

system March 8, 2013, 9:38pm 18

Sorry, I wanted to say that "I am NOT expert about arduino and sound circuits".

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