Hi Wulf Man, thank you by your response.

But with this I will need add one more "device"(photodector). I would like 
to usage the current structure, but I dont have idea how  dectect Lamp 
status when using 3 way switch.

Best regards

Carlos

Em sábado, 10 de janeiro de 2015 18:32:14 UTC-2, Carlos Cesario escreveu:
>
> Hello Guys,
>
> Does someone could help me with GPIO and Three Way Switches?
>
> I 'm plannining usage the BBB with relays and my current electrical 
> structure including the Switches, (like the draw attached).
>
> My main problem is identify when the Lamp is High when used by Switch. I 
> cant get the current lamp status.
>
> Does someone have idea how todo this?
>
> best regards,
>
>
> Carlos
>
>
>
> <http://www.4shared.com/download/VxJPw6Yzba/iligaao_com_interruptor_parare.jpg?lgfp=3000>
>
> <http://i.stack.imgur.com/cTU8P.jpg>
>
>

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