I2C
Contributors:
SFUptownMaker
SFUptownMaker 
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.
- Wikipedia Article on I2C - Not great, but not a terrible place to start.
- Standards Doc - Phillips Semiconductor became NXP a few years back; this is the official standards doc for I2C.
- I2C primer - The official primer on I2C and related technologies.
- Linux Tools for I2C - A nice set of tools for working with I2C and related buses in embedded Linux environments, like pcDuino or Raspberry Pi.
- Open Source Hardware Association: A Resolution to Redefine SPI Signal Names
- Qwiic Connect System
To use I2C over long distances, check out the dedicated PCA9615 differential I2C bus extender.
Qwiic Differential I2C Bus Extender (PCA9615) Hookup Guide
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
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 Real Time Clock Module (RV-1805) Hookup Guide
Find out what time it is, even after the power's been out on your project for a while with the Qwiic Real Time Clock (RTC) module.
Programming the SparkFun Edge with Arduino
Running low-power machine learning examples on the SparkFun Edge can now be done using the familiar Arduino IDE. In this follow-up to the initial Edge tutorial, we'll look at how to get three examples up and running without the need to learn an entirely new SDK.
Fading with the MOSFET Power Switch and Buck Regulator
In this tutorial, we will slowly turn on the load and then slowly turn it off using the N-channel MOSFET.
IMU Data to Motion: Tutorial for Translating Sensor Data into Real-World Movement
Sometimes we want to do more with our data than just watch the values roll by on a screen. In this tutorial, we'll take a look at one way we can translate that data to movement.
Looking for more inspiration? Check out some of these blog posts for ideas: