Not sure the best forum for this, but I want to run 450 WS2812 leds (30 led per meter strips) in a single strip, so total length 15m.
So max current is going to be 27A.
I read that ideally you should have a power connection every meter but this isn't going to be really possible.
I don't know what voltage drop there is on a flexi strip, so not sure how far is reasonable between power connections.
I'm not sure if having power distribution is best done with DC 5V and one big PSU (a PC PSU will do 5V at 35A for a twenty quid) or several smaller PSU's distributed with mains running out to them. (A much more expensive option).
If I go with a single PC switchmode, I would have some long cable runs, so I need to know how much voltage drop is noticeable. Worst case approx 8.5m
The leds are going to be arranged in a rectangle 2.2mx5.3m so if the psu is a meter away from one corner, the furthest corner will be 8.5m away.
I guess brightness differences can be tuned out in software or I could make all the power feeds 8.5m long to get even voltage drops.