What you'll need- COB led chips. Cree CXB3590 and Vero29 are the most popular. I haven't used either so I'll just use for an example what I use. I use the citizen clu048 1212 chips. They're rated at 36v, 2800ma max. Led driver. My chips are rated 36v, 2800ma max but typical or preferred ma is 1400. Your chip runs cooler, color is more true and you get a better lumen per watt. Volts and amps are the 2 most important things when it comes to choosing chips and drivers. More later. Heatsink There are 2 kinds. There's active heatsinks and passive heatsinks. Active heatsinks implement a fan for cooling. Passive heatsinks just cool from a large surface area. If you're an efficiency freak use passive. If you don't mind the extra electricity and want your heatsinks to literally feel cool go with active. Power source I just use a 110v ac plug A word on voltage and ma. If I want to run my 36v chip I need at least a 36v driver. It can be 40v, 70v, or 100v just as long as it's more than what the chip is rated the chip will come on...look at volts like your cars ignition and the COBs like your car. If you want to crank your 36v car you'll need a 36v+ ignition. Look at your amps (or ma/milli amps as they're listed on most drivers) as your cars gas pedal. The harder you push that pedal the faster, or brighter in an leds' case, the car will go. Most COB run most efficient from 50-75% their max ma rating. So my 36v, 2800ma max chip should be run at 36v, 1400ma for the most efficiency. Pictured in order- COB chips Drivers Heatsinks Instructions on putting together, different designs and links to parts up next. I might need to edit something as I'm exhausted lol.