Push-button and twisted-pair lighting control modules

Hi, I have a twisted pair cable drawn to each of the boxes in my house and would like to use it to control lighting and roller shutters. While the subject of roller shutters seems fairly straightforward to me, I can't (maybe I've searched poorly) find lighting control modules (1, 2 and 3 channel). I'd like to keep the current candlestick switches, but add the ability to switch the lights on over the twisted pair. I don't know if I'm approaching the subject correctly because, to my surprise, finding such wired controlled modules is probably impossible. Ultimately the whole thing is to be operated by a Raspberry Pi and an app on a phone. Are there any off-the-shelf modules available that will allow switching both from buttons and remotely?

Isn't it better to give z-wave modules and a control unit? You could also give our Suple from zamela or and not similar modules. Cheaper, although less possibilities.

DzieX wrote:

I would like to keep the current candlestick switches, but add the possibility of switching the light on via a twisted pair

How would this work? A candlestick switch complicates the situation.
It might be better to use a ready-made solution - more flexible, functional and probably much cheaper.
For roller shutters maybe Shelly 2.5 or shutterBox, for example - you can control with a switch and from an app.
For light control - there are a lot of solutions here - from smart switches to dimmable/coloured light bulbs by remote control.
If you integrate it with e.g. google home, you control it with one app. The whole system can be expanded in the future.
The choice of specific solutions is a matter of budget and requirements.

Well, I don't know how. Preferably like the mentioned supla only by cable. In general, I would like to base everything on the raspberry pi and write myself an app for this. Ready-made solutions do not interest me.

Then write, it only works out cheaper and more secure that way. I write about ready-made solutions.

It is nothing urgent. Even if it takes a long time. The problem is to find just such a relay which, having the input from the switch and the signal on the twisted pair, will switch the light on or off. Unless I don't know how to look or it's called something specialised and I don't know the name. I was hoping for some kind of hint.

I have already given a hint: Shelly 2.5.
Universal for your own ideas - two channels, you can control switches (also bell switches), over the bus, if you add relays it's also low current.
If you don't want to use wireless functions, you don't have to (except for configuration). Or you can use the app straight away and work on your system.

You give little information, so the answer is very general.
Twisted pair control can be implemented in many ways. The number of lights you want to control is also important - Shelly 2.5 has 2 channels, Shelly 1 has 1 channel.
It is also important what kind of installation you have (with N - the so-called new type, or without N in the switch boxes - the so-called old type, or e.g. star).

N and earth are in the same box as the switches

Check this out Shelly. How about regular relays?
You give little information so it's hard to advise more.

That's because I'm constantly wondering what to choose.

The basis is a description of the functionality you want and what is and cannot be changed (e.g. installation). In addition, individual requirements - such as RPi and twisted-pair control.
Then you can look for possible solutions and choose the best one.

If not the requirements: RPi and twisted pair - the topic would be very simple. This complicates the situation and brings "an era down".

How do you envision controlling devices via RPi? GPIO via some relay module or some other way?
I'm assuming you'll do the software (RPi + application) on your own.

Yes, gpio. I will write the soft myself based on ready-made libraries.

Generally, nothing can be changed in the installation because everything is already plastered and I live. More requirements than a raspberry and twisted pair I do not have. I just want to keep the "manual" operation of the installation. The electronics should only be an addition.

Don't tell me that cable control is an epoch down relative to wifi. Over wifi everything works beautifully until suddenly after a storm you have to reprogram all the modules .

The price of this Shelly 2.5 is similar to the z-wave modules.

Then you should solve the control with these Shelly (assuming you will be able to tuck them into the cans (they are small, but better check).
Another way - even more 'analogue' is bistable relays and control from the RPi.

P.S.

DzieX wrote:

Don't tell me that control over cable is an epoch down relative to wifi. After wifi everything works beautifully until suddenly after a storm you have to re-program all modules

- Correction. By 2 epochs. By one epoch it's backwards to WiFi. Zigbee is currently trending .
As for programming modules after a storm or power cut, that's earlier eras too. I have quite a few different devices, from different manufacturers, different systems and no storm or power cut (e.g. a few hours) has caused problems - after a few minutes (the router has to get up and the devices connect) everything was working. Not all of them remembered the last state - I also have some older devices. A matter of getting the right devices.
I would be more concerned about twisted-pair cable - I often replace devices connected to it after storms....

Added after 8 [minutes]: .

kkknc wrote:

The price of this Shelly 2.5 is similar to the z-wave modules.

- Any specific suggestions that meet the Author's requirements?

sk1977 wrote:

Correct. By 2 epochs. By one epoch it's backwards to WiFi. Zigbee is currently trending .

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What you install the customer has. Price similar. Availability of equipment too.

I have heard other stories. I do know one thing - most if not all of these modules are in a closed architecture with bundled software making them expensive and not very developable. I have a 220m2 house and 70 garage and hence the idea to implement myself.

DzieX wrote:

I have heard other stories.

I wonder where you heard these stories? Probably from those who had nothing.

DzieX wrote:

One thing I do know is that most if not all of these modules are in closed architecture with bundled software making them expensive and not very developable.

So which systems are closed? Give specifics. There aren't many of them. So you can easily list them all. And this soft is how?

DzieX wrote:

I have a 220m2 house and 70 garage and hence the idea of implementing it myself.

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A lot depends on the head office. But with LUA scripts you will earn everything.
You want to implement, then implement. Only as I see it knowledge is not very much. So little chance of total success.

From my electrician

Getting the word out is the very purpose of this thread.

Then I'll list these systems when I sit down to the computer

DzieX wrote:

From my electrician

- everyone has their own experiences.... Maybe this electrician has just had a bad one. Maybe he came across such workmanship, or did such work himself and then had complaints .
Many installations are done not by electricians, but by electricians and "electricians" (spelling on purpose, and as you know many Poles are familiar with computers, medicine, electricity, mushrooms, and for some time also air crash investigation).

DzieX wrote:

Gaining knowledge is the very purpose of this thread.

- it is good that there are still people seeking knowledge before they get down to shopping and doing .

A lot depends on the choice of equipment. It doesn't have to be expensive and undevelopable. On the contrary. It can be cheap, stable, functional, developmental, etc.
In this area and probably in the long term (development), I would rather lean towards Zigbee - it has many advantages over WiFi + e.g. Home Assistant.

Realising your own system is an ambitious and extensive project - a bit like building a car from parts in your garage.... If you decide to do it, I wish you luck and keep my fingers crossed.
It will be difficult with help, because that's the nature of your own projects - but if you have questions then maybe you can find the answers.

sk1977 wrote:

One era is a throwback to WiFi.

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I will disagree with this, but it is my own opinion.
If we have a well done LAN and wifi coverage I think this is the cheapest option for an IoT base.
The main advantage - cheapest components and ease of configuration. Plenty of open source software with which to replace the original mostly cloud-based software.
Main disadvantage - power consumption - yes z-wave, zigbee, BT LE, run longer on batteries. However, even though most of the components are not very expensive, it still comes out much more expensive overall than those based on ESP processors.
Current consumption can be reduced by using deep sleep where battery power must be present.

By talking about a different era, I meant a change in approach to IoT - creating their own dedicated solutions rather than using existing ones.
Major manufacturers (or vendors offering smaller manufacturers under their brand) are releasing new devices already based on Zigbee rather than WiFi. This will become clearer in some time, but in my opinion WiFi-based devices will disappear from offerings.
Device prices are also becoming more accessible, especially for gateways. Compatibility between manufacturers will probably improve too - we will see in a few years.

To the disadvantages of WiFi-based devices (compared to Zigbee) I would add the load on the WiFi network, the need to take care of coverage (Zigbee-based devices connected to mains mostly extend coverage), longer connection time, response time, stability.