at first, try to see openHAB as a bridging tool between various insular systems. You can’t have THE solution for everything within one system. That being said, you need to decide, which technology fits your needs in whatever aspect.
oh! As you mentioned stability and stuff. Try to use as much “proprietary” technolgy as possible. I would never trust any home automation with the complex task of controlling my heating. Not that I consider openHAB unstable, even if it was 100% stable, I do change items and rules, and therefore I could (and have! ) crash my OH-Installation. If this happens, when I’m away in winter holiday - I come back to a frozen home. So I use a failsafe heating system, which my Installateur setup. I only address some scenes or change target temperatures and stuff… Keep that in mind!
As we don’t know your requirements, so for a start a few thoughts:
- KNX is a good start for most of home automation, as it is an open Standard, there are plenty of sensors, actuators and stuff. I would go for KNX for every new built or renovated house. KNX is reliable, stable and scalable as hell!
- if you’re using hardware, which don’t has KNX-connection or only with much expensive add-ons, you can add them mostly via some kind of connection (TIPP: I would recommend using hardware with open API standards or easy access)
- just scroll through the binding-section in the docs: http://docs.openhab.org/addons/bindings.html (try using install manual or install legacy, there are then much more bindings for technology)
If I would build a new house, I would go through everything from cellar to roof and try to think of how I can make use of automation and/or getting Information.
As a beginning here some food for thought:
- electric power, water and gas consumption (powermeter readout)
- everything regarding heating, ventilation, …
- security (door, windows, …)
- Garage doors
- Mailbox and or private parcel Station
- temperature and room temperature Controlling
- multiroom Sound
- garden (watering, mowing, lighting, …)
- all kinds of electric in my house (lighting, outlet, TV, …)
- weather station
you see, there’s so many possibilities and openHAB gives you the freedom to connect devices, actions and information. But as always in live: you have to make some base, meaning the hardware for wires, built-in sensors (e.g. if you like to have the floor temperature, you can’t add this one later). But you’re free to add whatever you like (unless it doesn’t have a accessible API or something).
So my last advice is this: If you decide for a hardware, make sure you have open access to it and not just in a (public) cloud - first of all, you have to access the cloud (perhaps with additional monthly costs) and secondly, what happens when the vendors shuts the cloud down? You have the hardware, but can’t access it anymore. That’s why, I’m longing to replace my cloud-based door bell - no Integration possible (the promised API was quietly shut down after I bought it) and I can only use it in an App and not within openHAB…
I hope, this brings you a step further? if not - just ask!