When I was looking for installing home security camera one of the major concern I had that I don't trust any vendor to spy on my house through the camera they would install. It's invasion of privacy and you don't know if someone is really spying on you. Moreover you need to pay a good amount of month fees for the service. So I decided to build my own. Yeah, it's not as sophisticated as you can buy in the market but it does the job.
Watch the camera in action in my youtube video below.