There are already many I2C devices in the wild. The Qwiic adapter converts the standard I2C pinout (GND, 3.3V, SDA, and SCL) to the 4-pin 1mm JST connector used in the Qwiic system.
As we develop new I2C products we will be adding the Qwiic connector to them. In the mean time, this adapter allows you to purchase one of these currently supported boards, solder it on, and get it on the Qwiic system quickly (grin). You can also solder the four wires on any 3.3V I2C device to the adapter get it on the Qwiic system.
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