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Reference: http://openenergymonitor.org/emon/buildingblocks/mains-ac-relay-module
Tutorial: http://www.instructables.com/id/Connecting-a-12V-Relay-to-Arduino/
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| The examples and code used in this tutorial can be found here: https://github.com/OpenDevice/OpenDevice/tree/master/examples/opendevice-tutorial |
See next step: Adding REST Support
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