Easiest way to test water! :)

Discussion in 'Do It Yourself (DIY)' started by Moonfruit777, Jun 28, 2017.

  1. Moonfruit777

    Moonfruit777 Well-Known Member

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    Hey there,

    I want to present you my DIY gadget that I made out of boredom.

    It is a magnetic stirrer that is simple to use, simple to make and looks clean.
    It really made water testing less tedious and I always use it since I got it.

    Please note that I am not an electrician - and there are probably better ways to do it but that is what I came up with and it works great :)


    Main components:
    Switch
    9V battery
    4cm DC fan
    DC-DC converter (step down)
    8cm x 8cm x 6cm box
    Neodymium magnets
    Magnetic Stir bar
    some small stuff like tape, shrink tubing etc.

    Tools needed:
    screw driver
    hot glue gun
    drill
    (Optional) Soldering iron

    How to:
    Connect all the wires, glue everything in the box, adjust voltage, done... sorry it is late and I'll make a video about the internals and how to connect everything :)
    You should get the point from the pictures until then.

    Challenges:
    find the right magnets to go onto the fan, so it still starts...
    find the right voltage so the magnetic stir bar in the test vial connects and spins at the right speed...


    Total cost was around 40 €. Depending on what you already got. I only had the magnets and the battery...

    box.png
    internals.jpg
    internals 2.jpg
    converter setting.jpg


    Let me know what you think about it.
    Is it helpful? Would you make it yourself? What could I improve?

    I'll try and answer all question that you may have :)



    Greetings
    Felix
     

  2. Moonfruit777

    Moonfruit777 Well-Known Member

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    Here is a short demo video :)
     
  3. bigkai

    bigkai Well-Known Member

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    Video not working iv wanted to build one of these for awhile
     
  4. Moonfruit777

    Moonfruit777 Well-Known Member

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    Try again it should be working just fine now :) (there was an error)
     
  5. bigkai

    bigkai Well-Known Member

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    Very cool might get added to my diy list.
     
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