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ESP32 Pinout simplified: No more confusion when choosing GPIOs.
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How to use the I2C interfaces of the ESP32 • Wolles Elektronikkiste
Quick reference for the ESP32 — MicroPython latest documentation
NodeMcu ESP32 WROOM-32 38 pins Development Board Dual Core WLAN WiFi Bluetooth | eBay
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ESP32 I2C Communication: Set Pins, Multiple Bus Interfaces and Peripherals | Random Nerd Tutorials
ESP32 I2C Communication: Set Pins, Multiple Bus Interfaces and Peripherals | Random Nerd Tutorials
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ESP32 and DS1307 , when try using i2c scanner, can't find i2c address. | B4X Programming Forum
Question interfacing a master ESP32 with 13 slave ESP32's using I2C communication on alternate I2C Pins (33 & 32) - Programming Questions - Arduino Forum