What budget smart home systems exist in nature?

Question

Arduino

And tell me, what smart home systems exist in the budget segment? What would the minimum cost start from 20-30 thousand (let there be only initial light control for such a price, for example). Orientation - apartments, small houses, SOHO.

Answer 1

Z-wave
RasperyPi + module for it z-wave-raspberry
Everything else you will find here
Modular, works without wires. at 20-30 it will be possible to start with.
Z-Wave does not require additional wiring and other repairs
Ease of installation allows you to independently configure the entire system
Flexibility and the ability to consistently increase functionality by installing additional devices will make it possible to adapt the system to the changing needs of owners in the future.

Answer 2

MajorDoMo - free system (windows/linux), active community, a large number of connected hardware (including Z-Wave, 1-wire, Noolite, ModBus, arduino, etc.), endless customization flexibility :)

Answer 3

The OpenHUB option and the debug board are not of interest to you, apparently?

Answer 4

NooLite, deLumo.
Very cheap (block cost about 500 rubles) - Glanzen
You can control it with Broadlink Rm Pro