This instructable will show you how to make a web-connected mailbox sensor. Besides emailing you when your mailbox is opened, it will also signal a Raspberry Pi sitting in your house to play an audio announcement. There is also a web-accessible Android/iPhone interface for you to check what time mail was delivered, as well as display the battery voltage left on the sensor.
But this could also easily be used as a web-connected security system, one that both plays an audio alarm in your home and emails you when the someone breaks into your house.
In order to receive the wireless packet and communicate the data to the Raspberry Pi, two gateway system has been built-up – one is RFM Gateway & the other is Ethernet Gateway. For the Ethernet gateway function, Ethernet shield is used.
Here is demonstration movie to show how the system operates.
For more detail about this project and all source code, visit Instructables.com
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