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Need Help on semi automatic water level controller using 555 in bistable mode

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Discussion in 'General Electronics Discussion' started by jin tu, Nov 18, 2015.

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  1. Nov 18, 2015 #1
    jin tu

    jin tu

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    Nov 18, 2015
    I have build an semi automatic water level controller using 555 in bi stable mode i.e. it will not turn ON automatically (one should have to press a button to start) but will turn OFF automatically when water level is high.So I have directly connect the VCC to PIN 2 through a push to OFF switch.My problem is that the pin 3 goes high automatically without pressing the button when power supply fluctuate(turn on off) for atleast 3 times.Plz help
     

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  2. Nov 18, 2015 #2
    Martaine2005

    Martaine2005

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    May 12, 2015
    Hi Jin,
    Try a push to ON switch..
     
  3. Nov 18, 2015 #3
    Alec_t

    Alec_t

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    Jul 7, 2015
    Aren't you happy with the replies you had over at the AAC forum?
     
    KJ6EAD, Arouse1973 and Martaine2005 like this.
  4. Nov 18, 2015 #4
    Martaine2005

    Martaine2005

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    May 12, 2015
    And every other forum too.
     
    KJ6EAD and Arouse1973 like this.
  5. Nov 19, 2015 #5
    GPG

    GPG

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    Sep 18, 2015
    ? link?
    As above. OP.. Easily fixed but if you have already been offered it....
     
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