2-4 seconds timer light indicator

Discussion in 'Homework Help' started by jdox86, Jul 12, 2010.

  1. jdox86

    Thread Starter New Member

    Jul 12, 2010
    1
    0
    i need to make a timer circuit with the following
    1) timer starts with the press of a foot switch
    2)time need to be varied from 2-4 seconds (using a variable pot)
    3)LED should indicate the 2-4 seconds time interval

    Please pool in ur thoughts about this.. :)
     
  2. tom66

    Senior Member

    May 9, 2009
    2,613
    214
    Use a 555 in a monostable configuration. There are plenty of circuits on the 'net that explain this - use one of them.
     
  3. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,159
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