DIY projects

I was simply wondering if anyone has built their own LED lighting system. I read two articles online about it and I totally want to try it. I have a 55 gallon tank, it's a fish only system for now because I haven't gotten up to the high end lighting that is required for a reef tank. Just wondering if anyone has tried this fairly new technology out yet. Here are some plans that I found:

http://ledsupply.com/docs/reef-tank_...structions.pdf

http://reefcentral.com/forums/showth...0#post14502630