This Instructable will walk you through the steps needed to make a stained glass pendant with an LED that blinks in a pattern using a microcontroller. The blink pattern is an actual firefly song of a type of Japanese firefly. It is a scaled down version of the Jar of Fireflies code that my partner wrote. I have included the code here. update: I'll be giving a workshop on this at Seattle Toorcon. Yay! firefly_pendant.tgz148 KB
http://www.instructables.com/id/Firefly-Pendant/