Smart cities is both about hardware and data. As of last week Eyehub is monitoring 4 noise sensors on the University of Surrey campus. Last night, we monitored a large noise incident which turned out to be the refuse vans going around the campus. We can now see how noise pollution might be mapped out across the campus and the city. We are also sharing the data on our website and have documented all the hardware design & code as well as the design files for an app to track and map the data.