technical description
switches
Blink works by linking the lights relays to a master room input. When the master room's lights are activated, other rooms receive the information and blink accordingly. The essential component is the electric switches, as shown above. They are an add-on to the electric box. It works like this: the switch activates current between 2 pins immediate for the other. One wire takes input from the master room and transmits it to other rooms with windows.
streaming
Blinkers in the master room log on the performance page and receive a live video feed taken from outside the building. This enables them to see the result of their action as they are performing it. The streaming is done using a small surveillance camera which sends the signal over radio frequency. The latter is transformed from RCA to firewire using a mini-dv camera, then streamed using quicktime broadcaster running on Darwin Server. Thanks to Harry Smoak and Sebastian Speier.
masking
Elie Zananiri made a wonderful flash application than enables us to mask non-immediate floors to blinkers. This is the technological response to the Cellular Automata challenge, as explained in the artist statement. The swf masks the live video according to coordinates taken from the xml page. An admin user can generate coordiates for the mask and link them to a specific room. |