Color temp tunable lamp prototype

Technology
Color temp tunable lamp prototype

tempTunableLamp_cc.jpg
From the MAKE Flickr pool

Another interesting project from Flickr member jiskar – he’s developing a high-power LED light with adjustable color temperature.

The goal of this project is to develop an energy efficient lighting system that not only produces light, but that produces light with a color and spectrum that actually has a positive influence one one’s biological and mental state. Just like sunlight.
[…]
Humans reacts on the different colors and intensities of sunlight. It influences one’s biological clock by making feel awake or sleepy, it influences productivity and mood. A lot of research has been done on this topic and it shows that lighting can have significant impact on one’s state. You probably notice this yourself; when you’re working its nice to have bright white light and when you’re relaxing you like a cozy yellow light more.

Of course those high power LEDs produce a fair amount of heat, hence the impressive heat sink –

tempTunableLamp1_cc.jpg

The current iteration mixes the four LEDs via an ATTiny44’s PWM outputs. Should be interesting to see how this one turns out – if nothing else, it’ll make one heckuva custom desk lamp. Follow his progress on the Ledmodule wiki page.

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