NodeMCU ESP8266 Pinout, Specifications, Features & Datasheet
Nodemcu ESP8266 Pinout, Specs, Versions with detailed board layout
Schematic from V3 · Issue #32 · nodemcu/nodemcu-devkit-v1.0 · GitHub
USB CP2102 32M FLASH WeMos D1 ESP8266 Internet Wifi Module for Nodemcu Lua V3 DC Power of 4 ~ 9V VIN pin CP2102 for Arduino|Integrated Circuits| - AliExpress
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials