ESP8266 Change i2c pins - Programming Questions - Arduino Forum
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ESP8266 Pinout Guide: How should I use the GPIO pins?
ESP8266 Pinout | Pins and Their Functions of ESP8266 SoC - ElectronicsHub USA
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NodeMCU ESP8266 Development Board with 0.96 Inch OLED Display, CH340 Driver, ESP-12E WiFi Wireless Module, and Micro USB Works Great for Arduino IDE/Micropython Programming (Pin Header Soldered): Amazon.co.uk: Computers & Accessories
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