HEHE! It's funny you mention AutoCAD. I'm designing a RWDC set-up for the second half of my flower box right now using it.
First and foremost you want to get the LED's in the right WAVELENGTH> You can't just go get red, blue, and white to make it work. 620nm-630nm Red, and 455-475nm blue are hard to get ahold of for much less than just buying the damn premade. Do some research on the exact wavelengths used for cannabis, and you'll see there is a reason those lights are that much. You might save a few bucks and cut corners here and there, but ultimately, and this is just my opinion, once I factored in the time, raw mats, and tertiary assembly materials needed, along with the etching of the boards, I was no further ahead than just ordering the lights from Advanced LED and saving myself the hastle. now, if you have the chemicals, and the PC board and solder just lying around collecting dust. . . . that MIGHT be a different story... maybe. You also have to think about cooling.
