Have done a ton with the home automation network over the past year.
-Nearly all the downstairs lights, basement lights, and outside lights are on the network. Can all be controlled wirelessly -- primarily from our iPhones, though I also access from our Macbooks and we have a front entry wall switch that will trigger various scenes (e.g., Bedtime, which turns off all the lights and locks the doors).
-The basement lights are triggered by motion sensors -- never need to turn them on or off.
-Front and back door locks are on the system. We can control from our phones, or otherwise just enter our PIN codes from the keypad (so much better never having to worry about housekeys).
-Both our thermostats are on the network; controlled wirelessly, set on timers and based on various events (sunrise/sunset, someone coming or going, etc.)
-Motion sensors throughout the house -- I set up custom displays on our iPhones for the whole system. It's basically a floor plan of our house, and you can control lights by touching the icons, lock/unlock the door, and even see if there is motion in a given room. The motion thing is great for when you wake up in the middle of the night to some noise, just scoop up your phone to see if anyone is downstairs.
-I have all the battery operated devices being monitored, so that when the battery levels get low, it sends us a reminder e-mail to replace the batteries in the given device.
- Flood sensor in the basement in the one area where we had water during a big rainstorm. Likewise sends us an e-mail if it is tripped, in case we are away, so we know we are flooding.
- Hacked into our garage door opener, included a relay to open/close it, and a sensor that indicates whether it's opened or closed.
I'm mostly done with the basics and then some. The other things I plan to add include:
- potentially wiring the system into our ADT alarm system, which we haven't used (but it's installed, and all the hardware is there, so I could hook it up to our automation network and integrate alarm functions if we want to)
- OR include some basic alarm functions, like if there is motion in the house downstairs at night, triggering a light or beep in our bedroom
- wiring into the in-ground sprinklers, so that we can control all of that from the system as well (right now it's on a timer in the basement, but it's easy enough to add this to our system instead, and then you can control by all sorts of things -- i.e., based on weather forecasts, humidity, etc.)
I'm sure I'll come up with other things to add down the road. All in all, it's a cool and convenient system. Lighting and thermostats basically all control themselves, based on time programs we have set up. I just press a button when we go to bed, all the lights shut down and doors deadbolt. And it's nice to be able to let people in remotely when we aren't there, or for those times you are already 20 miles for the house and sit there wondering whether you locked the door or not, etc.
The parts can be expensive, and it's a time-consuming hobby, but once it is all set up, it's great.