Switches Tutorial for Arduino, ESP8266 and ESP32
Using the 4 Pins of the ESP8266-01 : 3 Steps - Instructables
Switches Tutorial for Arduino, ESP8266 and ESP32
Adafruit Feather Huzzah ESP8266 pull-up resistor using Arduino IDE - Stack Overflow
Pull-up Resistors - SparkFun Learn
DS18B20 works only with pin D4 and D3 on nodeMCU....not others - Sensors - Arduino Forum
Arduino Internal Pull-Up Resistor Tutorial - Bald Engineer
Hardware design — ESP-FAQ documentation
Installing and Building an Arduino Sketch for the $5 ESP8266 Microcontroller - Make:
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
Arduino-er: Control GPIOs of NodeMCU (ESP8266) with ESP8266 core for Arduino, to read Buttons and write LEDs
How to Use ESP-01 ESP-01S Pins and Leds : 9 Steps - Instructables
How to Show Arduino Sensor Data on a Web Page - Circuit Basics
Switches Tutorial for Arduino, ESP8266 and ESP32
esp8266 - ESP32: how to keep a pin high during deep sleep (RTC GPIO pull-ups are too weak)? - Electrical Engineering Stack Exchange
ESP8266 Relay (active low): how to prevent triggering on boot or reset (SOLVED) - ESPHome - Home Assistant Community
ESP8266 Using GPIO0/GPIO2/GPIO15 Pins : 4 Steps - Instructables
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
Measure if LED is on with esp8266 and oktocoupler - ESPHome - Home Assistant Community
Recommendation for an IC "OR Gate" for ESP8266 Project - Project Guidance - Arduino Forum
esp8266 - How to keep a pin LOW for a small amount of time after pushing a button and while device is booting? - Arduino Stack Exchange
NodeMCU ESP8266 resets itself when not powered by micro usb - Sensors - Arduino Forum
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
Very DeepSleep and energy saving on ESP8266 – Part 6: Power DOWN/UP – Arduino, ESP8266, ESP32 & Raspberry Pi stuff
Installing ESP8266 Board in the Arduino IDE: Step-by-Step Guide
