using 555 circuit to make a phone call

Discussion in 'The Projects Forum' started by haxxx, May 11, 2011.

  1. haxxx

    Thread Starter Active Member

    Feb 14, 2009
    35
    0
    Novice here,
    I want to build a circuit that will employ 2 relays, one to close and release the speakerphone button on my telephone, then 1/2 second later the second relay would close then release the redial button. The phone requires the release of the speaker phone button b4 it allows redial. Could the attached circuit work by connecting the speakerphone relay to the output of timer A, then the redial relay to the output of timer B.


    Thanks,
    Haxxx.
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    Add a CD4017 to that and it might work.
     
  3. haxxx

    Thread Starter Active Member

    Feb 14, 2009
    35
    0
    not sure where or why to add the CD4017.
     
  4. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    My bad. I misread the first post. Didn't I see this thread somewhere else?
     
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