Video surveillance

After I successfully built a automatic light system in my stairs room (look on my previous post), it is time to add a video camera to it. Someone comes - light is turns on and I see him on display. No need to come to door. So I installed a tiny camera on top of my door and installed a small 7.5 inch display. Camera looks like this - upper part is a ceiling

and this is a display on my work table

I use the same power supply as for my light system - 12V and I use the same Ethernet cable for video signal. Now I'll be lazy and fat. And not open my door :)