[About Aurora 9 bar]
Sharing the same circuit design with Aurora 9x18, Aurora 9 bar creates beautiful waves of colors. The heart of the unit is PIC24F08KA101 micro-controller. Using a proprietary technique, this controller controls 9 x 3 (RGB) independent channels of PWM signals. The result is just beautiful.
You can learn how to build one of those at instructables.com:
The kit & PCB are available at theledart.com/ .