Follow the steps below if you want to use an ESP32 as Master device.
Last updated 3 days ago
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See for communication examples.
Go to Arduino IDE > file > preferences
Add the following URL to boards manager URLs
Open Tools > Board > Boards manager
Search Espressif
When using DOIT ESP32 DEVKIT V1 available at . Go to Tools > Board > esp32 and select DOIT ESP32 DEVKIT V1
DOIT ESP32 DEVKIT V1 I2C SCL GPIO 22 I2C SDA GPIO 21