Smart home building system technology, home automation, bus systems

KNX systems, i.e. actuators and sensors, are parameterized using the ETS software. Depending on the course completed, this costs about or just under 1000 euros. For very small projects, the demo version is sufficient. In general, however, this is not something you just do casually or teach yourself during the construction phase. There are system integrators who do this professionally. When combined with a powerful multimedia or IoT visualization system, this results in a house with absolutely unlimited possibilities.

However, one must be aware that this is not a DIY project unless you want a hobby rather than a functioning house. It goes far beyond the world of radio sockets/app lamps, which, as correctly pointed out at the beginning, actually have nothing to do with a "smart," i.e. intelligent house.

Is there a good site with concrete examples? Although you read that there are unexpected possibilities, you hardly read any concrete examples.

Concrete examples are:

Dubai Airport
ADAC headquarters in Munich
Europacenter in Berlin
Vienna University of Economics and Business
Alibaba Beijing Office in Hangzhou
Melbourne Super House in Australia

These are now the most outstanding ones... of course, there are millions of smaller projects spread all over the world...

We have several threads where such things have been discussed. But just start your own and ask your questions.

You have to be aware, however, that something like this is not a DIY project, unless you want a hobby and not a functioning house.

But that would render the above-mentioned diagram absurd. If I call in an SI because I want a switch assigned differently, I might as well call an electrician to rewire it for me. As for me, if I decide on KNX, I would like to have a certain level of knowledge about the subject and be able to reassign a switch or a lamp myself. Of course, this involves a high learning effort but in my opinion, it pays off in the end. Of course, only if you also have the time for something like that. Most new single-family homes probably won’t opt for a "full installation" in KNX but rather just a certain expandable base.

Now let's come to the structure of a KNX bus system
...

I really think it's great how this was described! It's a pity that it didn't continue like this!

Even though it is technically possible, I do not see the benefit.