(2017-06-14T21:00:00.000Z) The I2C protocol allows communications across a "bus" between a master device, multiple masters, and one-or-more slave devices. Two wires are required, supporting communication with up to 112 devices, with one line carrying a clock signal and the other line carrying data. The video shows using I2C on Arduino using the GY-80 board and GY-521 board, both of which has several sensors. The video shows how to communicate with those devices using Arduino Sketch programs.
(2015-02-09T22:00:00.000Z) Let's use the I2C Bus to connect and use a Character LCD the easy way with only 2 wires. The tutorial shows reading data from an ultrasonic range sensor, and displaying on the LCD.
(2014-12-15T22:00:00.000Z) I2C is an acronym for Inter-Integrated-Circuit-Communications. It was invented by Phillips Semiconductor, now NXP. It's meant to provide simple, robust, inexpensive and easy-to-use communications between a "chain" of devices. Many devices such as accelerometers, temperature sensors, pressure sensors, etc. communicate on the I2C bus.