From solving a simple problem - How did a 1980s TV 'talk' to your new Video Cassette Recorder (VCR)? - The Inter-Integrated Bus has solved many of today's low speed communication problems. Known affectionately as the I2C (pronounced eye-squared-see) bus, just two wires can connect a variety of electronic components that help us enjoy many products from Smartphones to Cloud Server farms. In industry the I2C bus is a simple and reliable link for sensors, indicators, human interface, and behind-the-scenes equipment set up and control. We talk about how it works, and what it can do for your next electronics project.