/diy/ - Do It Yourself

>>1378167
22AWG drops ~1V/170ft at 350mA, which you would add to your LED voltages according to the length of your loop. I'd try to keep a 22AWG loop under 60ft just to keep losses low
20AWG would be slightly more efficient, but not really enough to worry about. brightness is the same (as a function of current) in either case
>heatsinking
>>1378079 is the real shit. you can stick your stars to just about anything with this. you'll also want this stuff to build your stars. otherwise you would probably want to use screws to mount them to something
unless you stack like 10 of them in close quarters, the surface you mount them to suffices to keep them in safe temperature ranges. get some aluminum trim channel or angle at your local home improvement emporium, if you don't have some strips or sheets of scrap metal laying around