April 9, 2013 AT 2:00 am

DIY Electronic Birthday Candle

DIY Electronic Birthday Candle

So the concept here is pretty simple.  I wanted to mount a microphone on a stick with an LED and design a circuit that would react to a large amount of noise on the microphone input (blowing) to turn off the LED.

This could easily be accomplished with a micro controller, but I thought it’d be more thrifty and challenging to do it with analog components.

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