We can build a simple “Ambilight” clone. Macetech member Garrett with his team build an Insanely Bright 60W LED Backlight for a 58″ Plasma Screen.
For necessary software configuration, boblight software package is used. Prior to that remember to install the X11 development dependencies first. The boblight config file created by Garrett can be seen here. The next step is to understand the AtmoLight protocol and control the LEDs using an existing product called ArduinoAtmo. It controls ShiftBrite, MegaBrites, ShiftBars, and OctoBars. Its code created by Garrett can be seen here.