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| [[Category:Occupancy_Sensor]]
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| == HacDC Lab Occupancy Sensor ==
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| HacDC's lab occupancy sensor is now operational.
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| Key features include:
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| # Real-time and historical occupancy data is available for your projects. Perhaps a twitter bot, data visualization heat map or remote occupancy indicator?
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| # The underlying architecture demonstrates an approach allowing bidirectional communications between many microcontrollers and many application
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| # The Google Calendar "[email protected]" is updated every five minutes with current occupancy data | |
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| == Technical Overview ==
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| Martin configured a sensor system consisting of an Arduino, a Radioshack photoresistor (276-1657) and a Quest passive infrared motion detector as shown in the following schematic diagram.
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| [[Image:OccupancySensor.png]]
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| This Arduino is connected to the jukebox computer via USB and monitored by a simple Python script that forwards occupancy sensor data to a Spread messaging system (see spread.org). Several "agent" applications receive occupancy status messages via Spread and perform tasks such as updating a Google Calendar and data logging.
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| All software developed as part of this project is GPLed and available via LaunchPad at: https://launchpad.net/hacdcoccupancy
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| A demonstration agent is also included in the distribution, providing a convenient starting point for your projects. This demo agent currently toggles LEDs in my house based on HacDC lab occupancy status.
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| == [https://www.google.com/calendar/embed?src=hacdcdoorman%40gmail.com&ctz=America/New_York HacDC Doorman Google Calendar] ==
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| <include iframe src="//www.google.com/calendar/embed?mode=WEEK&height=600&wkst=1&bgcolor=%23FFFFFF&src=hacdcdoorman%40gmail.com&color=%23A32929&ctz=America%2FNew_York" style=" border-width:0 " width="800" height="600" frameborder="0" scrolling="no"></iframe>
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