How to Make a Light Bulb with Dancing LEDs Inside
This is about dancing LEDs following the rhythm of music or speech picked-up by a small microphone. The projects is very cool, and for building it, you will need a light bulb,10 LEDs, project box, electronic board with IC CD4017 and LM358 and power adapter.
You can download the schematic from here. Make sure you subscribe for more awesome videos from the macobt projects!