Smart Mailbox

This is another popular DIY home automation project that has numerous write-ups and video posts around the Web. Simply reuse the hardware we constructed in Chapter 5, Tweeting Bird Feeder, and tweet or email when the light coming from the open mailbox lid hits the photocell. You could also have the speech playback-enabled Android device from Chapter 10, Giving Your Home a Voice, audibly announce the delivery, as in “You’ve Got Mail!”

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