Just started using fast led library and the arduino a couple days ago and noticed the capacitor and resistor hook up for some led straps but I’m using apa102 and would like to know if I should add anything to it also.
For my small strips (both WS2812 and APA102), I just go commando, as in no resistors or capacitors. If I were to implement something with more than a foot between the Arduino and the strip, I’d reconsider that. Just make sure your grounds are tied together.