Step 7: LED Color Check and Testing Once everything was wired and completely set up, it was time to power it up and check for colors and tracking. For driving the LEDs, we're using a simple Arduino by outputting data out of the SPI channel. Most of what you see is just random algorithms to make sure the colors are in working order and all of the pixels are working. The top piece is white translucent plastic, works as a great diffuse panel as one is needed!
Image Notes
http://www.instructables.com/id/20-Unbelievable-Arduino-Projects/