Smart Irrigation: A Supercomputer Waters the Lawn

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In Silicon Valley the Campbell Union School District 's sprinklers used to dutifully water the soccer fields and gardens at 12 campuses even during spring showers. Temporarily shutting off each of the 45 irrigation control boxes, by hand, wasn't worth the custodians' time. But in 2009 the district installed new "smart" controllers that automatically adjust daily watering to the weather. Each box, fitted with a microprocessor and antenna, receives local real-time weather information by satellite from the WeatherTRAK climate center supercomputer run by Petaluma, Calif.–based HydroPoint Data Systems, Inc. [More] (http://www.scientificamerican.com/article.cfm?id=smart-irrigation-a-superc)

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