Momentary SPST activating 2 isolated signals using relay

Discussion in 'The Projects Forum' started by OldSkoolEffects, Apr 20, 2012.

  1. OldSkoolEffects

    Thread Starter Member

    Nov 18, 2009
    I have a specific switch I must use for a project, a momentary SPST, but need to use it to trigger two physically isolated signals. Essentially, one signal triggers a timed lighting sequence, and the other triggers an audio signal. I've tried using a switch with a common connection, but it didn't work for me. I am pretty sure I can just use a DPST or DPDT relay, but I'm not 100% sure how to wire the thing up. I'm not sure about my voltages and current, but they will be relatively low, given this setup will be a trigger feeding an Arduino.

    Any help or suggestion will be greatly appreciated. I think this is a simpler and cheaper solution then trying to find very small DPST or DPDT momentary pushbutton.
  2. panic mode

    Senior Member

    Oct 10, 2011
    can you post the circuit, there may be other ways (you do have arduino etc.)