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I2C displays don't work with LoLin NodeMcu Lua ESP8266 CH340G WIFI - 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
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Help getting I2C working on Wemos D1 R2 (ESP8266) - Networking, Protocols, and Devices - Arduino Forum
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