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Control lights, pc->relay->lights

Discussion in 'Electronic Basics' started by RS82, Nov 15, 2003.

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  1. RS82

    RS82 Guest


    I would like to switch on some lights (24v DC) using my PC - i was
    thinking either serial \ parralell interface - or USB if that is possible.

    As far as i can see i just need some kind of relay attached to the port, and
    then send a signal to trip the relay. Is this right?

    What kind of relay do i need? (If possible, i want one where i'd send a
    signal and it would turn on, send a signal to turn it off - as opposed to
    one where i need to send a signal constantly to have the lights on). Please
    bear in mind i really dont know much about electronics.

    Also, would it be possible to detect on the PC whether the relay is on or


  2. Bill Bowden

    Bill Bowden Guest

    There are a few ideas to hookup relays to the PC printer
    port shown here.

  3. RS82

    RS82 Guest

    Thanks, Bill & Tom - both sources have helped me understand a great deal

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