QWIIC - standard connecting devices with I2C interface
QWIIC is a standard connect modules, developed by SparkFun. It allows the connection of sensors, actuators, screens, wires, etc. using the interface is I2C. All modules are equipped with 4-pin connectors facilitate connection and prevent wrong connections.
The main advantages of using QWIIC this:
No soldering is needed between the modules that support QWIIC - no need to use 4 separate wires. It is sufficient to use one cable QWIIC
Polarized connectors prevent the vicious connections - 4-pin connector prevents reverse connection. There is no problem in thinking where to connect SDA and SCL do not confuse either of the wires GND and VCC.
The ability to connect in a circuit for the rapid expansion of the bus - most of the modules QWIIC has a second connector allows you to connect subsequent tiles.
QWIIC connector has a step of 1 mm, in order to save space on the PCB prototype. The standard can be used for any device with I2C interface. It is necessary to use appropriate adapter, for example, JST - QWIIC.