ESP8266: How To Add More GPIO Pins (MCP23008 Driver) - YouTube
NodeMCU Pinout Reference | Microcontroller Tutorials
ESP-01 Module Programming Board : 12 Steps (with Pictures) - Instructables
D1 Mini Esp8266 Esp-12 Esp-12f Ch340g V2 Usb Wemos D1 Mini Wifi Development Board D1 Mini Nodemcu Lua Iot Board 3.3v With Pins - Integrated Circuits - AliExpress
Reset and Programming Circuit of ESP8266 | Circuits4you.com
ESP8266 NodeMcu Pinout – ESP8266 Shop
ESP8266 Pinout Reference - Last Minute Engineers
Using the ESP8285 M3 – Arduino, ESP8266, ESP32 & Raspberry Pi stuff
GPIO pins of ESP8266 and How to use efficiently -IoTbyHVM
Smart altenative switch with ESP8266, ioBroker and MQTT - Hackster.io
ESP8266 – Knowing the NodeMCU GPIOs or Pinout - The Engineering Projects
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
NodeMCU v2 and v2.1 high resolution pinout and specs – Renzo Mischianti
How to Program the ESP8266's Onboard GPIO Pins | by Robin Kanattu Thomas | Medium
ESP8266 first project: home automation with relays, switches, PWM, and an ADC | by R. X. Seger | Medium
ESP8266 Thing Hookup Guide - SparkFun Learn
Programming an ITEAD Sonoff Wireless Smart Switch (ESP8266) | andremiller.net
2 Channel Relay Module Eujgoov Industrial WiFi Relay Board with Pin Seat and Pin Header for ESP8266 Secondary Development, DC 7‑28V 30A - - Amazon.com
Configure GPIO Pins for ESP8266 NodeMCU Input Output Operations
Esp8266 Esp-01 5v Wifi Relay Module Things Smart Home Remote Control Switch Phone App Wireless Wifi Module For Arduino - Integrated Circuits - AliExpress
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
ESP8266 Pinout, Pin Configuration, Features, Example Circuit & Datasheet
Nodemcu Nodemcu Gpio With Arduino Ide | Nodemcu
ESP8266 IOT Board(Arduino IDE or NodeMCU Lua Programming) - Elecrow
