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Short description of the project:
This is a construction to tell the world if the hackerspace is open.
[[file:Serverroom arduino.jpg|thumb|left|The server side, about 15m twisted pair away]]
The space state enables visitors of the hackerspace to know whether the space is open. The state can be checked by various means: an image on the website, spaceAPI, [http://discuss.hackerspaces.be/listinfo.cgi/antwerp.announce-hackerspaces.be an email alert], or a light outside the space's door.
The space state is set manually using a scissor switch in the space.
When engaged the switch closes two circuits (double pole, single throw). One of them is a 12V DC circuit that lights up our logo and doorbell outside. The second pole is connected to a utp pair that runs back to the server cabinet, where an arduino reads out whether the switch is closed. A server polls the arduino every minute and sends out emails, changes the picture on the front page and updates the space api. The source code [https://github.com/voidwarranties/are-we-open?source=cc can be found on github]
*Add some relays to the open state, to prevent stand-by power consumtion (arround 40W at the moment).
*Add some more sensors to the arduino to monitor space stats (humidity, temperature, number of times the bel rang, ...)
This is a minor edit
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