How can I build a wall panel display for room automation and appliance control?

Hello, I have recently been thinking about the automation of my room . I came to the conclusion that I could have a panel in the wall from which I could control the devices in the room . I searched the internet and found only expensive smart HOME control systems . Would any of you have any ideas on how to do this ? , or knows if there are such things?

Anything can be done, but you have to think about what you really want. The relationship is quite simple - you either have a lot of knowledge and determination or a lot of money. The less knowledge and money you have, the simpler and less 'nerdy' the system will be.

The panel in the wall is the LCD + touchpanel + the processor controlling it + the program you have to write for it.

Where can such a programme be "written" for this device ?

Hmmmm... on your own, for example in an AVR Bascom environment, or Atmel Studio. However, if you haven't had much to do with programming before, that's definitely too deep.

Well unfortunately yourself , unless you know of some not expensive devices (electronic kits) that can be assembled ?

Specify what you mean by "not expensive" - preferably in PLN.

i can give 300 zł

£333 costs for the 640x480 256-colour, 5.6-inch LCD display alone, so that leaves monochrome solutions, or even alphanumeric displays.

Sorry, but at this amount you will have a hard time turning a room into a "smart room"

A smartphone or tablet can act as a 'panel'.

bartas858 wrote:

control devices in the room

What devices and exactly how do you want to control them?

I know , maybe blinds , lighting , maybe calorifier temperature (setting) ,

Another fundamental question is - do you cut into walls to run a signal wire or are you trying your hand at wireless technology ?
Have you built anything (if so, what) on microcontrollers ?

I can forge in walls. I'm a specialist at it.

Admittedly, you didn't answer the second question, but at this stage you would have to start 'from the end', i.e. develop the actuators first - relays or triacs for the roller shutters, control the lighting with triacs, you will be able to adjust the brightness. If you want to regulate the temperature - think about an electronically controlled valve for the radiator.
Another question you need to ask yourself - are you able to miniaturise the modules, are you going to hang/press another box with a controller next to each socket.

The subject is very, but really very extensive, although, with a lot of self-denial, feasible.

Kuniarz wrote:

The subject is very, but really very vast, yet with a lot of self-denial doable.

Yes - and on top of that, mostly each system has its own designer who tackles it alone - because it's hard to find several people willing to work together on one system.
Well, unless the company employs several people and pays them.
That means several years of work on the system - if someone treats it as a hobby and doesn't care about getting the system up and running quickly, then maybe even better - he'll be occupied for a long time
But for the impatient, it will be a tough ordeal - for them, a better option is to buy a ready-made system.

Patient I am, I have the Idom layout assembled behind me.

Assembling a ready-made is already a plus, but a small . I think a good start would be to think about whether you want it to go outside the room at some point or stay within the four walls.
You could do something non-developmental in the room, i.e. lights only on/off to start with, same with blinds. You would have to develop modules with relays, which you would plug in in parallel with the existing switches. You would feed a pair of wires into each relay, and the main controller would feed 12V into the relay when the end device was to be switched on.
A terribly crude solution, but one that can be solved in a few weeks.

Of course, it is much better to build modules with some logic, i.e. in addition to relays, you add a microcontroller, choose one of the existing bus standards (RS232, 485, etc.) and then connect all the devices with one "cable". Here you also have to come up with some kind of data frame, some kind of acknowledgements, etc. A developmental topic, but much more labour-intensive.