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

2023-09-04 23:06:53

So far, there are actually only 4 areas = bathroom, access doors, terrace, living room/dining room.

2023-09-04 23:15:14

I have a max. of 4 weeks left until it has to be finished and start next week.
...
2 cores e.g. of the blinds near the control cabinet or the 4 cores along the flush-mounted boxes? I

A bit late, have fun. Do you want a complete training in 2 days and then a solution, or how do you imagine that? Apparently the basics are already missing here. A few YT videos won’t get you far.

Yes, you should know what an actuator is. You should also know where this actuator is installed depending on the system: centrally in the distribution or flush-mounted near the devices to be switched (e.g. roller shutters). You should already know WHAT you want to switch/dim and WHERE. Only then(!) should you look for what kind of system you want/need/can afford.

Just distributing cables - sure, you can do that. It basically never works.

2023-09-04 23:34:45

KNX forum is known to you!?

2023-09-05 01:39:26

My ideas:
Bathroom/toilet lighting + music
Roller shutter controls throughout the house (weather, time of day, heat/cold protection)
Sun (weather) sensor facing south sticking out somewhere from the wall?
Remote control of front door and garage door
Automated heating/cooling depending on the weather
(Smoke detector was not recommended to me, costs are high)
We have 1 blind, raise it in strong wind.
Reduce a few buttons in the living/dining room or put different functions on them (scenes?)
Outdoor area and living room light control dimming/time. If outdoor light is on = no driving up of the terrace roller shutter. If the terrace roller shutter is down = light off.

Forget it with that scope. To cram this into your mind so intensely in such a short time that you can first plan the house accordingly (!) and then wire it correctly "without reading 80 pages" and instead watching a few YouTube videos is simply not feasible. This is not about the ISO standard definition of KNX/EIB, but about the absolute practical basics. Not to mention the software side.

Otherwise, "KNX structure" googling might help.

For me now? Currently primarily building technology like house ventilation, heating/cooling, several differential humidity fans, smoke detectors, water detectors, CO2 sensors, sun, rain, so "boring" functions like the intelligent control of air conditioning depending on weather forecasts, photovoltaic yield, and planned presence.

So you just connected a few devices from the HVAC corner via LAN. Comparing that with KNX and comprehensive building control is roughly like saying "I have two wheels here, what do I need a car for?". The OP wants to control his house and not just ventilate and cool a bit. Ethernet ends very quickly here unless you rely on REG-Shellys or HomeMatic. Industrial standard vs. DIY island system.

2023-09-05 09:38:00

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 if at all, it was mostly "wireless smart stuff from brand X" that they knew. I will hardly manage, I already asked around for another trade who could advise me in advance, 2 said "yeah, uh-huh, yes, we’ll get back to you, bye". So rather nothing, which is why I’m asking here.

So I want to prepare, I like to read more over the next few days. If anyone has a few links that aren’t 80 pages long, bring them on. I already watched a few videos on YT. Do I really have to know what an actuator is for this (yes, I already roughly know, but as an example)? At least in IT forums I would recommend not to immediately suggest reading up on the OSI model when asking questions; everything else makes no sense. I don’t want to install actuators or program anything right now. Only lay cables. For example, 2 cores of the roller blinds near the control cabinet or the 4 cores 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 on why I should first study KNX or let companies do it.

My ideas:
Bathroom/toilet lighting and music
Control rollers house-wide (weather, time of day, heat/cold protection)
Sun sensor facing south somewhere coming out of the wall?
Control front door and garage door remotely
Automated heating/cooling depending on weather
(Smoke detectors were advised against, costs are high)
We have 1 blind, raise it up in strong wind.
Reduce a few buttons in the living/dining room or assign different functions (scenes?)
Outdoor area and living room light control dimming/time. If light is on outside = no driving up the terrace roller blind. If terrace roller blind down = light off.

Regards

I don’t want to discourage you, but four weeks are more than a bit tight. And reading 80 pages is actually not that much in the KNX world.
Yes, you should have basic knowledge about what an actuator and what a sensor is (the OSI model comparison is really an extreme choice here), and at least know the most basic actuators and sensors.
The problem is that a proper KNX installation has very little to do with a standard home installation, and a standard home installation with the additional laying of the green cable would become a very expensive KNX installation (a flush-mounted actuator – e.g., a relay for switching light on/off – costs more than double the price of a single channel of a multi-channel actuator – multi-relay – in the control cabinet, which is why roller blinds and switched sockets are usually wired with a 5-core cable to the control cabinet and not switched locally, BUT a cable in the control cabinet won’t help you much if you first just want to operate with 2 push-buttons to move up and down).
The balancing act between a standard installation and KNX is very difficult and definitely much more expensive for one of the two alternatives than doing each alone.

However, I am not a KNX system integrator; what I have learned so far is from a typical standard reference book (the thick one by S.H. where it’s not only about KNX) and a bit of personal interest. That’s why I find it difficult to give recommendations.

2023-09-05 21:18:52

It all reads as if every house installation is reinventing the wheel because it is so incredibly complex.

Are there no common implementations? For example, slowly dimming the light according to the time of day, what is needed for that?
I just want to get recommendations from someone. Roller shutter 2-wire to the light switch, from there 5 conductors to the distribution board. Light + music from the ceiling 4 conductors to the distribution board.
Are there example wiring diagrams somewhere, for instance from user reports?

Someone has already posted on the KNX forum but I would rather not start another thread there.

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

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