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Yet Another Arduino Blog: ESP8266 wiring schemas
![esp8266_gpio_pin_allocations [ESP8266 Support WIKI]](https://www.esp8266.com/wiki/lib/exe/fetch.php?media=pin_functions.png "esp8266_gpio_pin_allocations [ESP8266 Support WIKI]")
esp8266_gpio_pin_allocations [ESP8266 Support WIKI]
ESP8266 Pinout, Datasheet, Features & Applications - The Engineering Projects
ESP8266 Node MCU board specifications and pins descriptions. Frequently asked questions related to WI-FI board esp8266 node MCU
