I own a full Master Chief costume from Halo 3. If you've never played Halo, its an exoskeleton suit like the one Iron Man has. Mine is really high quality..it cost me about 1000 dollars
Anyway I'm trying to use Arduino to build a shield system. I don't know if you've ever played Halo 3 but when you get shot the whole guy lights up really bright all over..
I've been trying forever to find LED's at an affordable price that will run on DC power.. otherwise I need to wear a car battery and inverter and thats kindof insane.
How did you power your fur coat??
its awesome by the way
also if I managed to get the shields working would it be weird to wear something like that at that festival you mentioned? like is it mostly just DJs or do people cosplay video games n stuff?
I would reccomend EL-wire for what it sounds like you would like to do as well. And pretty much all LEDs are DC powered :-)
Sparkfun has an EL-wire sheild which is pretty easy to interface with. That may be a good jumping off point.
I would also say that SeaCompression may not be the right venue for that, but just look up any gaming or geek convention (PAX, Sakuracon, Norwescon, etc....) in the local area and I think it would go over great!