Prepare the smart home for future expansion (no wireless/cloud)

How much time do you have until the cleaner arrives and you need to be done? Reading a book and watching 2 videos on YouTube won't be enough, or can you program an operating system after reading C for Beginners? ;) Maybe you should rather get a planner, you can pull cables yourself.

Maybe you should rather get an electrician, you can pull the cables yourself.

That's true anyway, due to lack of my own or the electrician's knowledge. Possibly also pay for an hour once in a while so that someone explains it to you and what to pay attention to. A few days ago I called my GP and asked about coverage of a vaccination, a conversation of under a minute. Yesterday the bill arrived for 10.72 euros for telephone consultation with "increased time expenditure". I will do that in the professional environment sometime soon too :cool:

Before senselessly throwing cables into the wall, a basic Smart Home course is in order. For example: What are the different things that are supposed to be connected? What are sensors, what are actuators, and where are they located? What do I want to achieve with my Smart Home? What do you do by cable, what by radio? What can radio do and what can’t it?

Personally, I find the KNX 4-wire wiring quite limiting. KNX or another control bus might run over it eventually. With old-fashioned Ethernet, I have far more flexibility, I get power supply via PoE, can choose from thousands of end devices, and configure it conveniently in the home network.

Nothing against KNX, it’s a cool technology, but I’ve run Ethernet everywhere here and love it.

And what is connected to actuators and sensors there?

And what is connected to the actuators and sensors?

For me now? Currently primarily building services such as ventilation, heating/cooling, several differential humidity fans, smoke detectors, water detectors, CO2 sensors, sun, rain, so "boring" functions like intelligent climate control depending on weather forecasts, photovoltaic yield and planned presence. Currently, the automatically controlled irrigation system, which is also normally connected via Ethernet, is added. Sure, all this also works via KNX – but then I would need a second network. Now I have one and can use it for everything, supply power to every port as needed, etc. Additionally, for example, for irrigation, I simply connect a standard Hunter system to the network instead of building some KNX special solutions or gateways. Yes, it all works, I know, but I want to minimize the number of different systems and the gateways required as a result. In the OP's case, it might be a completely different goal. If I primarily want to automate my house lighting, the wiring needs to be in completely different places. And that's exactly what I want to get to: What do you want to achieve, where should the devices actually be located?

Hello,
I have a maximum of 4 weeks left until it has to be finished and will start next week. There are hardly any electricians here who know KNX; I spoke with 3 electricians and the only thing known was at most "wireless smart stuff from brand X". I will hardly manage that, I already asked around for another trade who could advise me in advance, 2 said "yeah, aha, yes, we'll get back to you, bye". So rather nothing, that's why I'm asking here.

So I want to prepare, I like to read some things over the next few days. If anyone has a few links that are not 80 pages long, bring them on. I already watched a few YT videos. Do I really have to know what an actuator is for that (yes, I already roughly know, but as an example)? At least in IT forums, when asking questions, it’s not recommended to immediately have to read up on the OSI model, everything else makes no sense. I neither want to install actuators now nor program anything. Just lay cables. For example, 2 wires for the blinds near the distribution board or the 4 wires along the flush-mounted boxes? I would be happy if someone could show a few examples of how to wire this sensibly. That would help me much more than lectures about why I should study KNX now or leave it to companies.

My ideas:
Bathroom/toilet lighting and music
Control blinds throughout the house (weather, time of day, heat/cold protection)
Sun sensor facing south somewhere coming out of the wall?
Remote control of front door and garage door
Automated heating/cooling depending on the weather
(Smoke detector was discouraged, costs too high)
We have 1 shutter, raise it in strong wind.
In the living/dining room reduce a few buttons or put different things on them (scenes?)
Outdoor and living room lighting control dimming/time. If light outside is on = no access to terrace blind. If terrace blind is down = light off.

Regards