Day 2, 80 Xbees hooked up to LEDs and 12V batteries, and controlled by four X4 connect port at Yarm Farm.
The lights are lit when they received incoming message submitted from the website: connectinglight.info , as well as SMS messages from mobile phones. Each message contains geo-location information which determined where each lights will be sent to. All the interactions are happening in real time with a delay less than 5 seconds.
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