see if the garage door is open, check for new mail, watch for movement, sense for gas, and even see how the dog is doing. The system uses both an Arduino and a Raspberry Pi alongside a ton of ...

Keypads, Fingerprint scanners, smart card readers ... and informs the Arduino over serial. The Arduino in turn activates the servo to open the door. The other part is the Google Now app.

I've always been tempted by the idea of a smart door lock but have never actually taken the plunge, which might explain my recurring interest in the topic... Which is a long-winded way of saying check ...

Interestingly, open source has come to mean that the doors from idea to prototype ... or had ambitions to prototype a smart home-automation system, Arduino made it possible. Most importantly ...