This tutorial shows how to control WS2812B addressable RGB LEDs (neopixels) with the ESP32 and ESP8266 using MicroPython firmware. It has schematics and code.
Control WS2812B Addressable LEDs with ESP32 and WLED
Sparkleiot 12 Bits WS2812 RGB LED Ring WS2812B 5050 Addressable LED Light String with Integrated Drivers Pixels Individual Controlling for Arduino
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Sparkleiot 12 Bits WS2812 RGB LED Ring WS2812B 5050 Addressable LED Light String with Integrated Drivers Pixels Individual Controlling for Arduino ESP8266 ESP32 Lighting Effect (Pack of 2pcs
Using NPN transistor for either load control (LEDs) or digital signal ( WS2812) - General Electronics - Arduino Forum
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007 - MicroPython TechNotes: RGB LED