What are the SDA and SCL pins

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walter25
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Joined: Fri May 09, 2025 10:04 pm

What are the SDA and SCL pins

Postby walter25 » Fri May 09, 2025 10:11 pm

What are the SDA and SCL pins on this ESP32 model?, specifically ESP32-S3-WROOM-1U-N4
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Sprite
Espressif staff
Espressif staff
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Joined: Thu Nov 26, 2015 4:08 am

Re: What are the SDA and SCL pins

Postby Sprite » Mon May 12, 2025 7:04 am

The ESP32 series do not have dedicated I2C pins; you can use any IO-pin that is not otherwise occupied.
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mosin jack
Posts: 3
Joined: Mon May 12, 2025 10:26 am

Re: What are the SDA and SCL pins

Postby mosin jack » Mon May 12, 2025 10:28 am

The SDA and SCL pins on the ESP32-S3-WROOM-1U-N4 are assignable. Common defaults are:

SDA: GPIO 8

SCL: GPIO 9

You can change these pins in your code based on your setup.
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