Hmm, I get a 404 for that link.  Maybe it was part of some search results?  Anyway, I used 576 5mm RGB LEDs that were driven by 108 of these PWM controllers from NXP:

  http://www.nxp.com/documents/data_sheet/PCA9635.pdf

I probably would not use I2C for this kind of thing in the future though (I'd use a 'dumber' but faster serial interface).

Garth

On Wed, Sep 28, 2011 at 11:30 AM, Ash Charles <ashcharles@gmail.com> wrote:
Trippy!  That is a neat effect actually.

Can I ask how you are driving the LEDs?  Are the LEDs something like
these RGB PWM driven ones
http://www.superbrightleds.com/cat/component-leds/filter/Color,RGB,3,103:
?

On Mon, Sep 26, 2011 at 5:53 PM, Garth Webb <garth.webb@gmail.com> wrote:
> I'll leave a link to a video I took of the Solarium.  It doesn't get into
> the technical details and unfortunately the effect is difficult to see in
> the interior shot; my camera auto adjusted the day & night brightness levels
> to be uniform and it couldn't capture the whole ceiling.  Please excuse the
> silly hats:
>   http://vimeo.com/28740085

-Ash

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