Disney “Glow With The Show” Ears Teardown. Andy writes -

On the way to lunch, one day, our CTO told us about this amazing show they put on at Disneyland called, “World of Color” in which all of these special “Glow with the Show” mouse ear hats changed their glowing colors in sync with the show. Of course, the car full of techies and nerds instantly got to speculating on the tech behind it all.

…I tore apart the hat. It’s nice and simple and elegant. There are a couple of mystery parts, but I think I have a good guess as to their functions. More on those later. Overall, the tech is stuff we DIYers use every day for our own “shows” and props, so that’s cool in itself. I’m sure the Imagineers at Disney will eventually explain it all on a higher level, but, for now, I think I got the idea.