diy cob drivers

Hey guys I was hoping to try and build a led chip board on a 3.5x3.5 frame to go in a 4x4 Now I know how to wire up lights for a chicken brooder And snake enclosures with thermostats but these led have got me confused First I purchased just a cheap chip and driver from eBay and that was just red...

:Namaste: Hello fellow diy'ers I'm researching COB's for some time now and it looks like every build is about the same ... cobs run in series with a few meanwell drivers . My question is " is that necessary ? is there some science behind it? a paralel run would be less efficient?"...