I would like to know if a wired home automation system based on Arduino would be possible. I would like as KNX system does, to separate power and command circuits (switch or sensors from lights for example). For that, the state of the switch has to be known by the Arduino to switch on or off the light.
Hi!
It sure is possible. Depends on how much tinkering you are willing to do.
You could just use KNX on Arduino, so you get a plethora of tested and reliable devices (from nice looking switches and other wall mounted sensors to 230V actuators like 16-channel switch actuators and much more) ready to be used together with your self-build Arduino sensors.
Thanks for your reply !!
In fact, I would like to use standard hardware because it is cheaper than KNX.
But I would like to know to read the state of a physical light switch for example to be able to use both physical and raspberry pi to manage lights