Clapper Circuit

Discussion in 'The Projects Forum' started by Clapper, May 6, 2010.

  1. Clapper

    Thread Starter New Member

    May 4, 2010
    2
    0
    Hi all.

    This is in response to this old thread: http://forum.allaboutcircuits.com/showthread.php?t=17561

    I'm trying to make this circuit for a final project and everytime I connect the battery, the first LED comes on and stays on. I'm using LMC555CN timers for IC1 and IC2. I'm also using 2N3904 transistors. I've double and triple checked the connections. I also switched around the 555 timers and double checked all the resistor and capacitor values. I'm still experiencing the same problem. And clapping has no effect on the circuit. Does anyone have any ideas?

    I'm using this circuit: http://forum.allaboutcircuits.com/attachment.php?attachmentid=6231&d=1230802160
    I've also connected pin 13 of the 4017 to ground as other members have stated. Thanks in advance.
     
  2. Clapper

    Thread Starter New Member

    May 4, 2010
    2
    0
    It seems as soon as I made this thread the circuit began working. However I have not yet gotten the second LED to light up. I will post an update if I can get it working.
     
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