With halloween here it seemed like an ideal time to post code and pics from a simple PIC project I did last year for a costume (intended to be worn under clothing).  It's very loosely based on Tony Stark's reactor in the Iron Man movies, and uses PWM to dim and flash some LEDs.  I've been too busy with Nitrogen Logic to do a full writeup, so here are the pics, and you can find the code on Github.  I'll note that, due to a lack of proper fabrication tools, the housing is rather ugly.