Domoticz

Yeah, i know that wired but it will be helpful. Let me explain. In few months I want to modify control of lights or other devices in my house, i want to do that with relays and normal wall switches, but there is a problem, when i turn on light with domoticz on dashboard i can see icon that light is ON, but when i turn off switch on wall there is still info "on" i want to use some kind of detection of current/voltage to know if the light are relay ON for detection ill try to use this: with additional transoptor to separate high voltage from avr and detect when light is ON, then i want to 'overwrite' status on domoticz without sending signal of change of status to relay(s).
Diagram will looks like this:

So there is a question, its possible to overwrite device status without changing it?

Sorry for my language. its difficult to me to explain that in other language than my native.

Why not use a relay that has an input for the switch? Like a Qubino or Fibaro?

1. its expensive
2. Not only lights will be controled like this.
3. i want to have controll even when my domoticz system will have some problems

1. True, about €50 each
2. There are relays up to 3500W
3. Thats the point of the switch input, to control them even without domoticz.

2. There is also Aeon Labs Heavy duty switch which can handle 40A.

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ok, but the n1 is cost of it, 50$ for each relay is cost (for me) more than 500usd which is to big so i have to find some cheap alternative



gizmocuz, Its possible?

the mysensors project (www.mysensors.org) allows for an arduino to have local logic (when I press switch turn relay on and tell domoticz I have done it) - it can also respond to messages from domoticz when required)

True - you MAY find that local switch -> arduino -> relay on -> tell domoticz might result in another ON coming back from domoticz (don't know for sure) but it's only going to try and set the relay that way it's already switched - so not a problem (and you can always locally do "if told to switch on and not already on".