[Schuyler Sowa] has been hard at work on his own version of LED strip Pong. We’d say his work has really paid off. The game is robust and full of features. Unlike the original Pong video game… ...

Digital Pin 2 (D2) of the Arduino is the switch input, while Digital Pin 3 (D3) is the LED output. The white LED strip also runs on the same external 12-V DC supply. The following hardware diagram ...

The Arduino receives this data and can control either a single-color LED or with an RGB LED strip, assign colors to pitch accordingly using pulse-width modulating on each channel (Red, Green, Blue).

The Arduino can just increment the counter up to the appropriate LED. The Arduino then controls the state of the LED using the active high enable line from the column multiplexer chip.