Building A Serial Relay

Discussion in 'General Electronics Chat' started by jjacquay712, Jul 26, 2009.

  1. jjacquay712

    Thread Starter New Member

    Jul 26, 2009
    Hi everyone, I'm new to building circuits (I'm mostly a programmer) and was needing some instruction on building a relay for a serial port.

    What I want to do, is be able to have a "1" sent on the data pin on the serial port to turn a circuit on, then have another "1" sent to turn the circuit off. I was talking to someone and they said I would need something called a "flip-flop".

    Another option I was thinking of is just using a simple transistor to control the circuit, and have a program in a while loop to constantly send data to keep the circuit open.

    Which option would you consider to be the best? Any help is greatly appreciated.

    Thanks, John
  2. jut

    Senior Member

    Aug 25, 2007