this is probably a much discussed topic, I just couldn't find it here...
I'm working on a project where I use 10 meters of SK6812 RGBW strip (60 leds p/m) controlled by a NodeMCU (might become a Wemos D1 mini later on). Since each led is able to pull 80 mA and I have 600 of them, the total current could rise up to 48 Amps (240 W)!!! This would result in a HUGE 5 volt power supply and really heavy duty cables.
I thought of following solution:
- Use a 24 volt/250 W power supply like this. This way I can drop the current to only 10 Amps
- Add a step down converter like this each meter to power 1 meter of strip.
Am I correct that the cables used to supply the power can be way thinner then? (10 A at 24 V compared to 48 A at 5 V). Another advantage is that the powerbrick is way smaller
Could this work? (I know I have to tie all negatives together)