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Knowledge Base

Raspberry Pi GPIO Pin Usage

Raspberry Pi GPIO Pin mapping and connections

GPIO Pin ConnectionsOur Raspberry Pi Expansion boards use the I2C pins, UART or SPI pins on the Raspberry Pi's GPIO header.

All of the other GPIO pins are available to use via the stacking header connector.

I2C Pins

The following expansion boards use the I2C GPIO pins:

1 Wire Pi Plus and 1 Wire Pi Zero

ADC Pi

ADC Differential Pi

Expander Pi

I2C Switch

IO PiIO Pi Plus and IO Pi Zero

IO Zero 32

RTC Pi

Servo Pi

SPI Pin Usage

The following expansion boards use the SPI GPIO pins:

ADC-DAC Pi Zero

Expander Pi

UART Pin Usage

The following expansion boards use the UART GPIO pins:

RS485 Pi

Serial PiSerial Pi Plus and Serial Pi Zero


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Created 02/10/2015 | Last Updated: 25/10/2023

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