Raspberry Pi GPIO Pin Usage
Created 02/10/2015 | Raspberry Pi GPIO Pin mapping and connections
Our Raspberry Pi Expansion boards use either 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 Pin Usage
The following expansion boards use the I2C GPIO pins:
1 Wire Pi, 1 Wire Pi Plus and 1 Wire Pi Zero
ADC Pi, ADC Pi Plus and ADC Pi Zero
ADC Differential Pi
Delta Sigma Pi
Expander Pi
IO Pi, IO Pi Plus and IO Pi Zero
RTC Pi, RTC Pi Plus and RTC Pi Zero
Servo Pi and Servo Pi Zero
SPI Pin Usage
The following expansion boards use the SPI GPIO pins:
ADC-DAC Pi and ADC-DAC Pi Zero
Expander Pi
UART Pin Usage
The following expansion boards use the UART GPIO pins:
RS485 Pi
Serial Pi, Serial Pi Plus and Serial Pi Zero
