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

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

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  1. jin tu

    jin tu

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    0
    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. Martaine2005

    Martaine2005

    3,315
    907
    May 12, 2015
    Hi Jin,
    Try a push to ON switch..
     
  3. Alec_t

    Alec_t

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    799
    Jul 7, 2015
    Aren't you happy with the replies you had over at the AAC forum?
     
    KJ6EAD, Arouse1973 and Martaine2005 like this.
  4. Martaine2005

    Martaine2005

    3,315
    907
    May 12, 2015
    And every other forum too.
     
    KJ6EAD and Arouse1973 like this.
  5. GPG

    GPG

    452
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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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