A while ago the author saw a demonstration of a Philips television system equipped with the Ambilight system. This lights up the background with colours that are dynamically matched to the image content. The author thought it would be an excellent idea to create a similar DIY system for mood lighting. No sooner said than done, as can be seen from the TV Light project described here – a system that is very similar to the now legendary Ambilight system.
In the parts list in the printed magazine, the designations IC3 and IC4 should be interchanged. This does not affect the PCB or the circuit diagram.
All passive SMD parts are rectangular shape, footprint SMD1206.
Of the ADC1175JM and ADC1175TC mentioned in the article, only the –JM version is a discontinued part. The PCB has been designed to accept both versions.
LED light bars are available from, among others, www.reichelt.de (e.g. # LED 13,5RGB 3W).
Contrary to what is stated in the article text on page 28, ready-built boards are not available through the Elektor Shop.
Update: 15 May 2008
New firmware uploaded. Added bootloader.