Desiging a water level automatic controller

Discussion in 'The Projects Forum' started by burrosheeed, May 19, 2013.

  1. burrosheeed

    Thread Starter New Member

    May 12, 2013
    8
    0
    I am designing a water level controller.
    I want d machine to stop pumping whenever the water level reached the peak and on when it reaches the half. I plan putting the common terminal to the lowest part of the water tank.
    I'm having problem with switching on the machine at the middle as I planned.
    I'm using NE555 bistable connection. Please, HELP!
     
  2. BSomer

    Member

    Dec 28, 2011
    433
    106
    We would love to help. However, without a schematic of your design we are completely blind and unable to help.
     
  3. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,157
    How does the pump know when to start pumping?
     
  4. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,969
    744
    Use a bistable circuit similar to this 555


    the timer starts when the level is below the lower limit and stops at the upper level, Only problem would be erosion of the electrodes over a large period of time.
     
  5. dthx

    Member

    May 2, 2013
    194
    14
    www.barksdale.com/products/section/level-control/level-switch/
    I'm not an electronics guy (yet) but I have used these with success.
    Barksdale makes a lot of livel switches....some quite inexpensive.
    Hope this helps.
     
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