ESP8266 Pinout and Functions This README provides a comprehensive overview of the pinout for the ESP8266 microcontroller, detailing the various pins available on common ESP8266 modules, such as the ...

[Sebastian] is using a NodeMCU but suggests that it could be pared down to any ESP8266 board — with similar cuts made to the rest of the electronics — but has this working as a proof of concept.

ESP-WROOM-32 38 PIN Develeopment Board PINOUT If you’re using an ESP32 30 pin Development board, you can use the following GPIO diagram as a reference. ESP32 30 pin Development board pinout diagram ...

While the ESP32 is clearly a superior piece of hardware, we think you’ll agree that the ESP8266 is just too useful not to have a dozen or so kicking around the parts bin at any given time. Ch… ...