WS2812 controlled by nodeMCU
tested on Adafruit Huzzah with FTDI cable
connect data pin to GPIO2
connect Vcc to V+
connect Gnd to Gnd
Upload init.lua to the nodeMCU (I used ESPlorer)
(remember to change the wifi credentials first)
cycle power on nodeMCU
check the ip address of the nodeMCU and connect to it!