I have some simple automation in my house and being an IT person most of it was just for the fun of it. however a few systems i do enjoy and may save me money. The one that surprised me the most is my hallway lights. I have a movement sensor facing into the hallway that covers the stairs and hall itself, I also have a Door sensor on the front door.
around an hour before sunset and an hour after sunrise the light automation starts. i need to get an ambient light sensor to control it really for those dark grey winter days when lights are an advantage, but thats a future project.
The front door opening turns on the light, this is a great little hack, especially in winter, you have your hands full of shopping / kids / dogs, you unlock the front door in the dark and the lights come on (ill be doing some coming home stuff for this at some point too) no walking through the house to find the switch or having to set anything down to turn anything on. just a nice little feature.
the lights come on when ever there is movement in the hallway of on the stairs, and then go off a few mins later, Its just accepted by us all now but its great, the lights are mostly off now (where as they used to be on all of the time until bed) but the second you step foot in the hall and they light up. I have this set up that after 1:00am the lights come on much more dimly just enough to see, for those middle of the night trips to the bathroom or drinks of water, where a bright light really hurts your eyes. Its 2 sensors and 1 light circuit but its a really handy integration and the one we use the most and i wouldnt like to live without now.
the plan for the future is to have lights in the driveway come on dimmly in the dark, then with either movement or tracking our phones, bring the lights up full when there is movement, then dimm them back down once we have got inside, then off at say 11pm to come on again if movement. I have some lights and lamps working I use fibaro in wall relays to use existing light swtiches to control the system no relearning for guests required, i can turn lights on and off at the switch on the wall or via an app and there are no issues. defo worth investing in and will work with any zwave system.