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need help designing a circuit with time delay

Discussion in 'General Electronics Discussion' started by villager, Nov 6, 2013.

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  1. villager

    villager

    2
    0
    Nov 6, 2013
    I am trying to design a system that will turn a fountain on for three hours, after a person walks by an area on approach to the fountain. The fountain is wired to a contactor with a 24 volt coil. I found a timing relay that can be programmed for the required time, (B2E-2R-24)but I am unsure what to use to activate the timer, some sort of motion detector, and how this instantaneous signal will activate the timer. Looking to use parts available on ebay. Any help would be appreciated
     
  2. KMoffett

    KMoffett

    723
    75
    Jan 21, 2009
    Google: PIR motion detector

    Ken
     
  3. villager

    villager

    2
    0
    Nov 6, 2013
    Thank-you
     
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