Here's a link to the wiring schematic that was removed
In this Instructable, I'll show you how to sync LEDs to music. I know this have been done before multiple times but this time I'll try to do it as clear and easy as possible. My camera is bad so please bare with me.
I've also made a video tutorial!
Step 1: What you need
9 volt battery
9 volt battery clip
*TIP31 (Or other NPN transistor)
*220 ohm resistor
audio cable or old headphones
If you have a breadboard you only need:
a knife or scissors
(optional) 3 alligator clips
If you want to make it permanent you'll need:
Soldering iron and solder
(optional) project enclosure