Tech Note 075 - How to connect and get I2C devices working (Arduino, ESP32, ESP8266) - YouTube
Arduino Slovakia - DS1307 and ESP8266
ESP8266: I2C PORT and Address Scanner : 8 Steps - Instructables
PCF8574 i2c digital I/O expander: Arduino, esp8266 and esp32, basic I/O and interrupt – Part 1 – Renzo Mischianti
In-Depth: How to Use an I2C LCD Display With ESP8266
TCA9548A I2C Multiplexer: ESP32, ESP8266, Arduino | Random Nerd Tutorials
How to Interface PCF8574 I2C LCD with ESP8266 NodeMCU? -
I2C Tutorial for Arduino, ESP8266 and ESP32
Austin Saint Aubin on Twitter: "Rewrote i2c scanner for Arduino, ESP8266, and ESP32. Makes use of OLED display. Works well, and is fast. Helps me to verify sensors are wired correctly and
ESP32 and DS1307 , when try using i2c scanner, can't find i2c address. | B4X Programming Forum
ESP8266 NodeMCU: BME680 Environmental Sensor using Arduino IDE | Random Nerd Tutorials