I2C Ecosystems: The Connector Zoo @Hackaday

Hackaday writes that the I2C is a wonderful interface. With four wires and only two GPIOs, you can connect a whole lot of sensors and devices – in parallel, at that! You will see I2C used basically everywhere, in every phone, laptop, desktop, and any device with more than a few ICs inside of it – and most microcontrollers have I2C support baked into their hardware. As a result, there’s a myriad of interesting and useful devices you can use I2C with. Occasionally, maker-facing companies create plug-and-play interfaces for the I2C device breakouts they produce, with standardized pinouts and connectors.

As with any standard, when it comes to I2C-on-a-connector conventions, you would correctly guess that there’s more than one, and they all have their pros and cons. There aren’t quite fifteen, but there’s definitely six-and-a-half! They’re mostly inter-compatible, and making use of them means that you can access some pretty powerful peripherals easily.

The article goes over the following connection standards:

  • Adafruit STEMMA / STEMMA QT
  • SparkFun Qwiic
  • Seeedstudio Grove
  • Pimoroni Breakout Garden
  • DFRobot Gravity
  • EasyC
  • Lolin

See the article on Hackaday


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