Electret Microphone - Activate LED's

[sujianhua]

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

I have an electret microphone https://www.sparkfun.com/products/8635 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.

 

[KJ6EAD]

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.

 

[wingnut]

If you go to this site and look under "clap switch" there is a circuit which uses an electret microphone. It has a 20s delay before switching off.

http://www.talkingelectronics.com/projects/200TrCcts/200TrCcts.html

 

[Wheelie016]

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.