Wireless mailboxes network alert system a very useful thing. It is very common throughout the world. All you need is to install it to your Inbox and receive signals that alert you to new emails.
Here’s a cheap wireless mailbox alert system that can be created overnight. So quiet the alarm won’t annoy Your neighbors, a pair of transmitter-receiver can be used for a garage, barn, mailbox, freezer, window or door alerting, for example, about the opening. Just place the receiver module in your living room, kitchen, or bedroom, and it will signal You (with glowing LED) if something is left open. This instructable will show you how to make a web-connected home 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 mailbox sensor and emails you when the someone breaks into your house.Under normal use (a few door openings per day), the battery powered mailbox alarm Arduino should last over a year on a set of 4xAA batteries. The transceiver has a range of over 700 feet through multiple walls, so this should work for most situations.One strip board Arduino, circuit optimized for low battery power consumption. Strip board components (voltage regulator, capacitor, resistors, etc…), see details later on.Two wireless transceivers.Two Arduino Uno’s with selectable 3.3V/5V switch for the gateways.One Raspberry Pi, but could be replaced with your PC/Mac if you don’t mind running the computer 24/7.I’ll explain how to piece all these parts together and provide all the code needed.Take a look mailboxsensor.com at this longer video to understand how the pieces of this system talk to each other. Then, we’ll start the first step of making the Mailbox Arduino.I actually liked the idea a lot, since you don’t depend on having a fixed scheduled for every day, making tado more intelligent than Nest (I believe the presence detection from Nest is just based on a physical presence sensor on the device, if the Nest is installed in a not common area of the house were people are constantly passing by, it might not be very accurate).I decided to make an android wear app just for the sake of learning the platform, and since I got the new toy some months ago, which didn’t have android wear compatibility, it was the perfect case to try it out.