Submitted bypatrik onThu, 2007-12-20 14:38

This is part of a ongoing project to replace as many of the common bulbs and halogens as possible with LED's. This time it's a book shelf light from Ikea thats being modified.

The victim:

The halogen was taken out and a Luxeon Star K2 took it's place. The reflector doubles as a cooler, a piece of copper foil is placed underneath the Star to help conduct heat.

A driver based on Maxim's MAX16820:

Light on:

Light off: