A nice project from justDIY Project Log, as the author is saying he created this project one day when he was boring and needed something “to ease his racing brain …” 🙂 not many people can create something this nice when they are bored. Led projects like this are always fun to build and to watch them working. I recommend this project to everyone who has a bit of experience with microcontrollers. You can get full info, schematics and source code for this project from here Link
Watch this circuit in action: