Basics of wireless smart home solutions

2021-03-12 10:50:19

Well, we are talking about well-thought-out solutions here, aren't we, or am I wrong and this is just a discussion about half-baked ideas?

2021-03-12 20:48:52

Based on the handle position, you can also deduce whether the window is only ajar but actually still open (e.g., closed by a gust of wind). With just window contacts, you can no longer check this. However, the handle position can also be queried for "security-oriented" functions: If the sliding door is closed but the handle is still open, then the shutters do not automatically go down (this discussion has already taken place here in the forum).

Our bus can tell us exactly what the window currently looks like. Tilted is recognizable, ajar means open, and handle closed means closed. Implemented with simple reed contacts and a status display from MDT or Visu.

Edit: my wife and I just tested this yesterday. When does the status switch to "closed"? Only when the handle is closed.

2021-03-17 15:04:57

So you mean IoT with LoRa or something like that? :eek: Rather unsuitable for your own smart home. I think avoiding radio where cables are possible is the only right approach (new build) ;) In existing buildings, of course, it's different. Then you sometimes have to take a pragmatic approach.

2021-03-17 15:41:49

Radio is, based on experience, the worst option because the signal can be disturbed by many factors. Systems that use their own wireless system for communication and reinforce themselves from component to component are better in contrast.

So radio is crap, but a "proprietary wireless system, from component to component" is better – so you are advising "mesh" (from component to component), but not with radio (not even light, that can also be disturbed wirelessly). Yes, I know that, Förster Wohlleben calls it the "woodwide web" and it works via glucose protocols (= proprietary system) through fungi. But how do you integrate that into smart homes if it's not a treehouse???

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Basics of wireless smart home solutions

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