The LED Light is slowly progressing. I finally fired up actual LED's today at full power and blinded a few people in the office at lunch time. It's been a good experience so far. I've only destroyed one component and that was because of an incorrect solder job.
The photos below show both the system and the illuminated blue LED's. I actually had to turn the exposure compensation down on the camera 2 stops just to take a picture, otherwise the lens would be completely flared out.
The next step is to make a "bulb", or multiple strings of LED's since each driver board can drive up to 8 strings of LEDs. Depending on how I wire it I can have either an RGB light, or a remote phosphor "pump" (i.e. just a bunch of blue LED's with a phosphor panel in front of them). If I designed my own custom LED panel I could also make a "white" LED array or a bi-color array. It's all about firmware now. At the moment I'm "recycling" from a stash of old scanner LED's that we had sitting around the office collecting dust - which makes things a bit less expensive for experimentation.
The cool thing is that I can also have up to seven driver boards. That's 56 strings of high power LED's! My end goal was to create a light in the 500W to 1kW range since most LED lights I deal with seem to be quite wimpy. I want something I can use in a daylight lit room. What you see below is just the very dim start of things to come.