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 get their address. https://t.co/iD4GQ4R2Wo https://t.co/AuJ67PlALu ...
How to Scan I2C Address in ESP32 Using Arduino IDE
ESP8266: I2C PORT and Address Scanner : 8 Steps - Instructables