LED Sound Meter

In this guide you will learn to created an array of LEDs that visually represent the volume picked up by an electret microphone. You will learn how to wire 3 different circuits which are the LED array (which is really many individual circuits), the microphone, and a button which can be used... Read more »

Small Amp

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  • 12/18/2012 @ 10:55 pm

This was one of the first circuits that got me into making. It’s very simple and can be used to amplify audio output (mp3 player, computer, etc.) as well as electric guitars. Read more »

Audio Spectrum Analyzer

As complicated as I thought this would be, this circuit is using the basic fundamentals of electronics and algebra. The only hard part is perfecting it and expanding it. Click here to see the finished project. Read more »