This page is meant to provide some basic information about how to interface with devices through the /dev/i2c interface. Filelist Accounts. The I²C bus is commonly used to connect relatively low-speed sensors and other peripherals to equipment varying in complexity from a simple microcontroller to a full-on motherboard. I²C is extremely popular due to its ease-of-use and ability to control multiple peripherals while utilizing only two pins on the host controller. Although I²C has a variety of modes, this page will deal purely with communication between a Linux-based master and a slave peripheral for the time being. History Of Equated Monthly Installment.