The Qwiic Connect System is a collection of I²C sensors, I/O boards, and cables designed to make prototyping faster, easier, and less prone to error.  It was developed by SparkFun, who graciously made the standard available for others to use without royalties.  The main features of the Qwiic Connect System are:

1. No soldering to connect Qwiic boards
2. Polarized connectors that prevent mistakes
3. Ability to daisy chain boards to quickly add functionality

The Iowa Scaled Engineering Qwiic-compatible product line can be found below.

• Input / Output
• ADC
• Sensors