Celebrating its 20th anniversary, the Chaos Computer Club turned the famous "Haus des Lehrers" (house of the teacher) office building at Berlin Alexanderplatz into the world's biggest interactive computer display: Blinkenlights.
The upper eight floors of the building were transformed in to a huge display by arranging 144 lamps behind the building's front windows. A computer controlled each of the lamps independently to produce a monochrome matrix of 18 times 8 pixels.
During the night, a constantly growing number of animations could be seen. But there was an interactive component as well: you were able to play the old arcade classic Pong on the building using your mobile phone and you could place your own
The project intersects with recent public debate in Copenhagen about air pollution in the city. In collaboration with Senior Scientist Jørgen Brandt from The National Environmental Research Institute in Denmark a first prototype is developed for making an indicator that can be placed in the city and display local levels of pollution as well as pollution forecasts on individual streets. The project holds an open source script for displaying data from the Internet in a variety of forms.