Hello, how can I control multiple roller shutters in one room individually but with as few switches as possible, without having to equip the entire house with a smart home system? My home builder sells Homematic products. But apart from the 3 roller shutters in the living and dining area, which I would like to control centrally yet individually and with as few switches as possible, I don’t really need a smart home system right now.
So, simply put, a switch with 3 buttons/toggles: one for up, one for down, and one to cycle through the roller shutters? This switch would be installed in a central location, with all the roller shutters in that room assigned to it?
So, simply put, a switch with 3 buttons/toggles: one for up, one for down, and one to cycle through the roller shutters? This switch would be installed in a central location, with all the roller shutters in that room assigned to it?
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Strahleman26 Jun 2019 15:00A very simple reason: I wouldn’t want to squeeze an actuator into every wall box behind each socket and light switch. With KNX, it’s much cleaner, and installing the cabling is less work than retrofitting actuators later. Additionally, KNX offers a much wider range of actuators, sensors, and switches. With wireless solutions, you always have to make sure that actuator A and switch B are truly compatible with the gateway installed at home.
Furthermore, with wired sensors (motion detectors, humidity sensors, etc.), you don’t have to change batteries all the time (Enocean motion detectors, for example, unfortunately require batteries). For small projects, this is not an issue, but if your entire house is filled with them, it quickly becomes annoying.
Furthermore, with wired sensors (motion detectors, humidity sensors, etc.), you don’t have to change batteries all the time (Enocean motion detectors, for example, unfortunately require batteries). For small projects, this is not an issue, but if your entire house is filled with them, it quickly becomes annoying.
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nitrox133726 Jun 2019 16:20Yes, you can always overdo things to an extreme. I already have so many devices on the supposedly overcrowded frequency band. What’s the problem? The switch isn’t streaming movies or gaming online. The amount of data it transmits is minimal. And installing KNX just for a few roller shutters? To me, that completely misses the point and is just a waste of money. I don’t know how much money you borrowed for your house, but KNX is not a cheap alternative. There are plenty of affordable, great devices using 2.4 GHz Wi-Fi, which doesn’t affect the frequency band at all. Like I said, you can overdo anything.
BigFoot schrieb:
But even then, control is done via KNX, with automation handled by, for example, openHAB, as it offers much more flexibility. Not really... only people who don’t have much experience do it that way. In a "proper" installation, KNX forms the backbone, including as much automation as possible on the application level (as a fallback). Only after that are additional solutions added on top.
nitrox1337 schrieb:
There are lots of affordable, great devices using 2.4 GHz WiFi that aren’t affected by the frequency at all. Once the installation reaches a certain size, it definitely is affected—and significantly so. Just because you haven’t encountered those limits yet doesn’t mean they don’t exist.
Mycraft schrieb:
Once the installation reaches a certain size, it certainly does, and quite noticeably. Just because you haven't encountered the limits yet doesn't mean they don't exist. But where is the limit?
I will also rely on Shellys and am currently testing them in my rented apartment. There, I receive over 20 Wi-Fi networks from neighbors, and I don’t have any radio interference issues with the Shellys. Even through reinforced concrete and using a basic router, I still have a connection. If the connection is lost, they also work without a Wi-Fi connection.
The limitations vary individually. In a concrete bunker, these occur more quickly than in a timber frame building, and even a microwave or Wi-Fi cameras (which are also popular with the same wireless setups) can significantly disrupt the operation.
Why anyone would rely on wireless technology in a new build is equally unclear to me—assuming the goal is to have an automated home and not just a playhouse.
Why anyone would rely on wireless technology in a new build is equally unclear to me—assuming the goal is to have an automated home and not just a playhouse.