See super rough (sorry I'm learning Fritz but bad with it) schematic attached - the lights sort of respond but are flashing super fast, wrong colors, etc. So I have a level shifter (using two external power supplies - one 3.3V and one 5V, essentially according to the schematic here (this schematic is for a 5V neopixel and mine is 12V): Controlling NeoPixels with a Webserver on an ESP8266 - Hackster.io) My understanding is I have to level shift the data pin to 5V since the NodeMCU runs at 3.3V.
(I have a capacitor and resistor hooked in per Adafruit best practices) Now I am trying to swap the Arduino Uno for a NodeMCU and running into problems. Hi - I have a 12V WS2811 neopixel strip - I have it hooked up and working properly with an Arduino Uno.
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