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  1. #12
    It seems to me like your diagram causes the BOB to take 12V in when you press the override switch. I'm not sure the BOB can take that much on the input pins
    I don't think you are understanding the relay contacts the 12 Volts -ve is connected to ground and the +ve is to the buzzer then though to the relay contact. Now when the override button is pressed the relay changes state and then grounds the buzzer to make it buz. In no way is it connected to the input pin on the bob
    Last edited by Clive S; 20-12-2015 at 12:46 PM.
    ..Clive
    The more you know, The better you know, How little you know

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