I'm toying with the idea of building a wireless burglar alarm. Partly because I like having little projects to keep me busy, partly because non of the kits on the market seem to offer exactly what I want. I'm thinking of controlling the whole thing through my PC, perhaps using a Maestro to interface with various wireless sensors. I'd like some thoughts on how feasible this is, or if there would be a better way to do.
At the moment I have a couple of 2.4GHz wireless cameras, and a bit of Perl scripting to alert me if motion is detected. Activity is recorded to look back through later, and I also get a photo sent to me phone if I'm not at home.
I'm looking to expand on this by introducing a couple of indoor PIR sensors, and reed switches on some of the doors and windows. Seems that 433MHz would be the way to go, but would a Maestro be overkill, considering I'd just be using it for receiving input, not servo control?