Ever wonder who rings your doorbell when you're not home? Or do you crank music up too loud most of the day to hear it anyway? Make Projects user Clement Storck built a simple Arduino-powered notification system that sends him a text message and an email with a photo every time someone rings the doorbell, and you can do it too.
The system is actually pretty simple. When the doorbell rings, an Arduino sends a request to a notification service called PushingBox, which then grabs a picture from web camera located outside. Then PushingBox sends a notification to an iPhone (it looks like this can be modded slightly with PushingBox to include Android and Windows Phone as well) and an email with a picture attached. It's all done with an Arduino, an ethernet shield, a doorbell, some resistors and a web camera. You can download the instructions and source code over on Make to get this going for yourself.