barking dog schematic

Discussion in 'The Projects Forum' started by jack mcleod, Mar 15, 2010.

  1. jack mcleod

    Thread Starter Member

    Sep 4, 2007
    21
    0
    Looking for a barking dog door knob security alarm which is battery friendly.
    (Found a 556 that needed 15 V and older components.)
     
  2. Connect

    New Member

    Feb 24, 2010
    21
    0
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