There are so many things you can do with an Arduino – they are amazing microprocessors! One thing I have done is make what is called a color organ. Think of it like a giant graphic equalizer that uses LED strips. It has a microphone and turns on the LED strips proportionally to the level of audio.

Its kind of hard to explain, but here is a video of My Color Organ in my living room:

For more information on how to build a Color Organ, click here.

— Mike