We've highlighted gobs of tools for turning your computer into a security camera, but if you're interested in building out a serious, multi-camera home surveillance system complete with wireless cameras, weblog MakeUseOf details how to do so.
The author uses an app called Active Webcam that's packed with features, and while it's not a free application, the trial version adds a small nag window to the corner of your webcam streams that the author thinks is completely tolerable. Here's what you'll get when you're done:
I'm going to describe how you can set up a system of security webcams that will alert you to even the slightest intrusion into the space the camera is monitoring. We're going to create a remote surveillance system that could monitor your home, your camp, your apartment — or all of the above, all at the same time. In essence you can create a giant personal surveillance network without limitations.
If you've gone down the DIY route for putting together a home surveillance system using your PC, let's hear how you did it in the comments.