DIY Automatic Top-up (ATU)

Discussion in 'Anything DIY Related' started by zak, 30 Jun 2011.

  1. zak

    zak

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    For those that requested, here it is. This is a basic unit, iv drew the circuit to accomodate 3 switches, you only need one. I tried to make it as simple as possible..

    44994e0c86ec129f5.jpg

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    44994e0c87442e2db.jpg

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    I use the extra switches to switch off the top-up pump when it runs dry and the third for redundancy. I also added an led to indicate the unit is powered up..
     
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  3. DarrenT

    DarrenT

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    you got some mad DIY skills man!
     
  4. butcherman

    butcherman Moderator

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    WOW impressive!!! Now .... how much?
     
  5. OP
    zak

    zak

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    Float Switches @R50ea
    Relay @R5
    Pump @R80
    5volts Free(use an old cell phone charger)

    Satisfaction when it works: Priceless
     
  6. AndrévN

    AndrévN

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    Where did you buy the floatswitches from
     
  7. OP
    zak

    zak

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    RS components, range from R50 to R5000
     
  8. AndrévN

    AndrévN

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    ;)
     
  9. pXius

    pXius

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    the resistor just for the LED?
     
  10. OP
    zak

    zak

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    Yip
     
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  11. pXius

    pXius

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    and a link to the relay please :D

    nvm found it
     
    Last edited: 30 Jun 2011
  12. OP
    zak

    zak

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    The relay depends on whether you have a 5v or 12v source. Just ask any electronics store to sell you a 5v or 12v relay that can switch 220volts..
     
  13. pXius

    pXius

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    found a 12V I need :) thanks allot, going to be quite useful.

    Did you get it delivered or did you drive to Midrand?

    Asking cuz I have a few other things I need to get from them.
     
  14. OP
    zak

    zak

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    Guys, please exercise CAUTION when building this, 5v won't kill you but 220v can. If you unsure about wiring, please ask..
     
  15. pXius

    pXius

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    I know my way around a solder iron. :)

    What almost killed me was the LED fixture I dropped in my tank yesterday.
     
  16. OP
    zak

    zak

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    I'm not far from midrand. RS doesn't always keep stock on hand, especially not float switches..
     
  17. pXius

    pXius

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    In that case I'll just courier. I fried some leds, 3 I think, can't test until I get the new ones (connected in series), and a new fuse.

    And I need to wait for the LEDs anyway.

    On what did you mount the switches?
     
  18. OP
    zak

    zak

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    It's called veroboard..
     
  19. pXius

    pXius

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    I mean like in the tank/sump...

    Did you make like a compartment for the switches?
     
  20. Theo

    Theo

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    Hi Zak. Can you give a diagram of wiring. Would like my hand at DIY ATU...
     
  21. OP
    zak

    zak

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    Not sure what you mean, wiring diagram is the first pic..
     

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