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Arduino - I2C-Bus Scanner
How to scan I2C Address using Arduino Nano
I2C Scanner: "No I2C devices found" - Networking, Protocols, and Devices - Arduino Forum
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