Using fairy lights from the dollar tree, I'm having a hard time trying to drive 5v to them using a darlington pair, it's barley brighter than the 3.3v signal from the D1 mini I'm using. I'm changing this so that v2 can drive a neopixel animation on a long strip rather than trying to drive 5v with the 3.3v signal. I'm hoping driving 5v through the neopixel strip using an idea with a diode I found on hackaday will make it easier for this to be flashier.