Hello everyone! this is my first post, so I hope i'm asking this in the right place
First of all, Raspberry Pi is just awesome, I'm having a great time installing, configuring, programming, erasing and doing all over again, just for the sake of learning something new each time.
Introducing my question: I'm having fun working on a home automation project. It's a RPi web server for user interface and data storing (Apache, PHP, MySQL, DNS), a data logging daemon I'm programming myself for the serial port, and an XBee radio. The setup allows many different combinations of sensors + actuators. The first thing I did was light detection with a photocell, so a LED lights at night. I was thinking it would be nice now to try out something related to home security.
The question: Which sensor, or combination of sensors would be a good way to go for human detection? As a starting point, I'm thinking about using a PIR sensor, but this sensors also would detect my dog, so maybe adding a second sensor combined with the PIR will make a good combo for this. Any ideas?