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Thread: Small guide to making an easy, solderless power adaptor for multi PC fans

  1. #1

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    Default Small guide to making an easy, solderless power adaptor for multi PC fans

    Hey

    As some of you may or may not know, im gonna monkey around and make my own fan controller box, with speed controller. Current methods at the moment involve lots of hacking wires, soldering, using a PC power supply and i think its all pretty messy. Heres my idea https://www.thctalk.com/cannabis-foru...ad.php?t=14462

    But since i need something in the meantime and im a stoner and not finished project yet, I've had to whip something up in the meantime and I'd thought i'd share.

    So here goes.

    You will need........ (most of stuff can be found at maplins)

    • A pc fan with connectors intact (make a note of amps of all fans used)


    • 2 x 4 pin molex to 3 pin fan convertor/connector (1 per fan, depending on the type you buy. In my example 1 per fan you used) If only using one fan, you'll still need another molex connector to finish the job (or you'll have to solder). This can be found easily from an old psu,


    • A 12v power adaptor (please take note of the Amp output)



    • Electrical Tape, Wire cutters/strippers


    Things to note....

    Add up the amps, usually .10 or .25 on fans. If they are greater than the Amp output on your adapter. You need less fans, or an adapter with a higher amp output.

    Step 1:

    Cut the top off the power adaptor. Leave some wire on the end of the bit you've cut off, You might want to use it later. I intend to in my fan controllers next incarnation.


    Snip the wire in the middle and pull the ends apart (if you have a twinned cable, IE both in seperate lil plastic covered tubes)





    Strip about 5-8mm of the plastic cover from end of wires and twist so no bits of wire are sticking out.



    Step 2:

    Get your molex connector and find the holes with the wires going into the 4 pin connector



    Place your two wires OUTSIDE the holes. not in them as the connectors wont connect together. Ensuring no bits of copper are loose or touching each other.



    Insert the 2nd molex connector into it to secure wires in place. Please be careful the wires dont move or you dont strip the cable cover. You maye wish to use a flat screwdriver as a wedge so it can pass over the cables.



    Alternatively, if you have a crimping set, you can crimp the power adaptor into a molex pin. Can be found at maplins too.

    Or you can solder onto the pins direct. but that sucks in my honest opinion and i cant be arsed.

    how ever you connect it, tidy and cover with electrical tape.



    Step 3:
    Plug in your fan/fans to the 3 pin fan connectors.



    Then plug power adaptor into the mains. WARNING - Dont be a moron. Plug it into a power socket DIRECTY, with a switch on it. And have the power switch to off before you plug it in.



    Switch on and hopefully ta da



    Writting the damn thread n taking pics took longer than making this gizmo. lol

    Hope this helps.
    Last edited by Munkeyboi; 05-10-09 at 05:00 PM.

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  3. #2

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    Nice mate, will help some people im sure.
    "One cannot help but ponder the strange dichotomy that a nation based on establishing individual freedom has now outlawed every substance which might aid in the exploration of that last and most important frontier, the human mind."
    [B]
    Checkout my new thctalk inspired blog at: http://thcblog.co.uk/

    All the Cannabis E-books you will need:
    https://www.thctalk.com/cannabis-foru...972#post197972

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  5. #3

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    arghhhh, ran out of edit time.

    Forgot to add, you can use as many fans as you like doing this. Just dont let fan amps exceed adapter amps

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    thanks for this mate - well handy

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    nice one dude. will help a lot of people this one

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    cheers m8 a very useful post
    thanks for posting

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    heres my finished installed fan

    outlined fan with marker pen and cut hole with cutter. Dont forget the screw/bolt holes either.


    Then used a fan grill to protect it. Placed rubber washers between grill and wood, also between fan and wood. Just to keep it quiet. Was going to cut out an old mouse mat.

    Secure in place with nuts, bolts and washers.







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  15. #8

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    Nice work munkey, very nice work.

    We growers are very resourceful when we want to be.
    God forbid any of us end up in the clink.. We'll all be escaping with our enginouity lol.

    Hehehe now I got the theme from the great escape going on in my head.. Oh no, that's gonna be playing all day now.. Bummer

    -----------------------------GROW DIARIES----------------------------
    |

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  17. #9

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    maybe this will help?

    Monkey whilstles along

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  19. #10

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    Nice tutorial

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