I2C

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Resources and Going Further

I2C is a relatively complex interface, and there are many resources out there to help you deal with it. Below are some of the more informative ones.

To use I2C over long distances, check out the dedicated PCA9615 differential I2C bus extender.

Qwiic Differential I2C Bus Extender (PCA9615) Hookup Guide

May 31, 2018

Learn how to extend the range of your I2C communication bus with the Qwiic differential I2C bus extender (PCA9615 ) breakout board.

Or check out our SPI and I2C tutorial with a Raspberry Pi.

Raspberry Pi SPI and I2C Tutorial

October 29, 2015

Learn how to use serial I2C and SPI buses on your Raspberry Pi using the wiringPi I/O library for C/C++ and spidev/smbus for Python.

Need some inspiration for your next project? Check out some of these related tutorials:

Qwiic Flex Glove Controller Hookup Guide

Is your finger bent? Is your finger straight? The Qwiic Flex Glove controller board will answer this age old question for you with the flex sensor!

Qwiic OpenLog Hookup Guide

The updated Qwiic version of the OpenLog Hookup Guide

Qwiic pHAT for Raspberry Pi Hookup Guide

Get started interfacing your Qwiic enabled boards with your Raspberry Pi. The Qwiic pHAT connects the I2C bus (GND, 3.3V, SDA, and SCL) on your Raspberry Pi to an array of Qwiic connectors.

Cryptographic Co-Processor ATECC508A (Qwiic) Hookup Guide

Learn how to use some of the standard features of the SparkFun Cryptographic Co-processor.

Looking for more inspiration? Check out some of these blog posts for ideas: