I've purchased an addressable LED (neopixel-ish) strip from Amazon which doesn't come with a power supply and I'm trying to hunt down something suitable. The voltage requirement is 3.5V-5.3V and the seller told me the LEDs combined will require 2.4A (120 LEDs @ max. 20mA / channel).
I have a couple of adaptors already but they don't seem suitable. I have a 12V 2A adaptor - voltage too high, I assume it may damage the LED strip, and I have a 5V 1A adaptor, amps too low - I assume the adaptor will get very hot and the LEDs will be dim, but I wonder if is safe for me to use this with the LEDs on a low brightness setting for a test.
I read that a device will only draw the amps that it requires, but what about the voltage? What are the rules of tolerance for safely powering something when I can't find an adaptor which provides the exact requirements? Currently the closest match I think I can find is a 5V 4A adaptor on Amazon. Will that be okay?
Any recommendations or advice are greatfuly appreciated!