“Make your own pocket disco with some music controlled LEDs. All you need is some music or sound and theLEDs will dance around to the sound.
This is a really run little circuit to build and only needs a few components to make it. The main one being the 4017 IC which is also known as a decade counter. This little integrated circuit can count to 1 to 10 and controls the LEDs. You can use these ICs to build LED chasers (just like Kit from Knightrider) and this build is similar but for one major difference. It utilises a transistor and microphone which allows it to react to sound!
If you have never built a circuit before or are only a beginner, then I strongly suggest that you check out my ible here and get the basics down first.”