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  #71  
Old 22-05-13, 12:58 PM
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yassarikhan786 yassarikhan786 is offline
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Loving the PSU work dude, love the attention to detail, keep it coming

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  #72  
Old 22-05-13, 05:12 PM
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Quote:
Originally Posted by alpenwasser View Post
I wrote a few simple web crawlers last fall for the purpose of automatically downloading
Now you have me sidetracked looking into this... My life seems to be one constant distraction...
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"All his life has he looked away... to the future, to the horizon. Never his mind on where he was."

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  #73  
Old 22-05-13, 05:42 PM
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alpenwasser alpenwasser is offline
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Quote:
Originally Posted by yassarikhan786 View Post
Loving the PSU work dude, love the attention to detail, keep it coming
Thank you!

I certainly intend to.

Quote:
Originally Posted by sheroo View Post
Now you have me sidetracked looking into this... My life seems to be one constant distraction...
Haha, isn't it grand?

My 4chan scripts have saved me an absolutely insane amount of work. All I have to do is
register a thread with the script and it will keep downloading any new pictures added to it
until the thread vanishes. No more "right click"->"save as" nonsense.

And the rest of them... yeah it's pretty awesome what you can do with a few lines of code
and some regular expression magic.
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  #74  
Old 22-05-13, 09:59 PM
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alpenwasser alpenwasser is offline
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Making a Custom Fan Controller

Making a Custom Fan Controller

As some of you may know, the SP120's are not exactly all that quiet on 12 V. Now,
I could just use the old 5 V or 7 V wire switcheroo mod, but that would not give
me very good control over the fan speed. Since I don't yet know what the temps
are going to be like, and since I will need this machine to be as quiet as possible,
I have decided to make a custom fan controller.

The idea of this is not so much to constantly change the fan speeds, but to be able
to adjust the fan speed to the optimal level and then leave it at that, possibly
changing it if it gets very hot in summer. But other than that, I won't be tinkering
around with fan speeds all the time on this, it's more of a set-and-forget thing.


The Phobya Fan Splitter PCB

First things first: I need some connectors. So I desoldered this Phobya fan splitter.

(click image for full res)



The New PCB

Then I soldered those connectors onto a new PCB, along with a variable resistor.

(click image for full res)



Cutting it down to Size

Obviously it couldn't stay like that.

(click image for full res)


And another angle:
(click image for full res)



The Backside

I gotta say: This was one tricky . I'm talking about tweezers and taking more
than an hour to solder these few wires. To be honest I would have required an additional
pair of hands, doing it like this wasn't really an optimal solution. Since my soldering
iron can't be adjusted I ended up melting off some of the insultation on the wires (they
heat up extremely quickly since they're so short and tiny).

The red tape is just for support, that's already gone. To give it a bit of extra strength
and to compensate for the melted insulation I've encased the connections with epoxy glue.
I'll post a picture of that once it's all set and solid.

If I was to do this more often I would definitely get a proper soldering iron and make
myself some sort of contraption which could hold everything in place so that I could do
some properly precise work.

(click image for full res)



It Lives!

Yeah, despite the not exactly stellar soldering job it works as planned. And there are
no loose connections or anything like that. I applied some force to the connectors while
it was running, no problem at all. So it might not look very nice, but it's solid,
especially once it has some additional strength from the glue (the 4 pin connector does
wiggle around quite a bit when I take out the plug, so that definitely needs additional
strengthening).

I certainly won't be doing it again just to get the soldering perfect since it's working
without flaw.

(click image for full res)


That's it for today, thanks for stopping by.
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  #75  
Old 22-05-13, 10:01 PM
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Permafrost Permafrost is offline
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Quote:
Originally Posted by alpenwasser View Post
Ah, ok. Part of it was just figuring it out as I go along. For example, the SATA power sleeving,
(although as mentioned I'm not yet absolutely satisfied with the result), cutting the unneeded
wires and all that. The rest is mainly from watching videos on Youtube and looking at other
people's mods.


IIRC, these are the main vids I watched to start with:



I never thought I'd spend 50 minutes watching a video on crimping, but there I was
one evening with a cup of coffee and open eyes...


This is the guy I bought my paracord sleeving tool from. His website is offline, but
Lutro0 says the one he's selling is actually made by this guy, so you can still get
that tool if you want (it's an excellent investment imho).


It's not really rocket science to be honest (although don't open a PSU unless you know what
you're doing). The most important ingredients are basic motor skills, a halfway intact intuition
about technology (this helps with improvising and adapting as you go along) and lots (and lots
and lots...) of patience

EDIT: About that "figuring it out as I go along" bit: This might of course take me a while.
Getting to the basic idea of the build (mounting the radiator at the back, switching the PSU to
the front) took me quite a while, and that was just the basic idea. Figuring out how to actually
go about it in practice was an entirely thing altogether and required quite some time all by itself.

And I've already spent several hours staring at the case and contemplating how to best do the
water loop (and it's not an overly complex one, just the pump/res, radiator and CPU block, maybe
a drain line).

So yes, one more basic ingredient: Lots of staring, sketching and thinking.
wow that's a lot of work!!
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  #76  
Old 22-05-13, 10:03 PM
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alpenwasser alpenwasser is offline
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Quote:
Originally Posted by I don't Know View Post
wow that's a lot of work!!
That might be a slight understatement.
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  #77  
Old 22-05-13, 10:04 PM
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Quote:
Originally Posted by alpenwasser View Post
That might be a slight understatement.
yeah just i bit.... but it looks worth it :P
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  #78  
Old 22-05-13, 10:39 PM
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alpenwasser alpenwasser is offline
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Quote:
Originally Posted by I don't Know View Post
yeah just i bit.... but it looks worth it :P
Well otherwise this would be a lot of wasted time.

But yes, I think it's worth it, or else I wouldn't be doing it.
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  #79  
Old 22-05-13, 10:43 PM
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Quote:
Originally Posted by alpenwasser View Post
Well otherwise this would be a lot of wasted time.

But yes, I think it's worth it, or else I wouldn't be doing it.
or you could do just to show off?

so what's next for your build?
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  #80  
Old 22-05-13, 10:57 PM
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alpenwasser alpenwasser is offline
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Quote:
Originally Posted by I don't Know View Post
or you could do just to show off?
Damn it, you have discovered my secret plan!

Quote:
Originally Posted by I don't Know View Post
so what's next for your build?
Off the top of my head, the following comes to mind:
  • Mod the reservoir (more info later ).
  • PSU: Finish sleeving, modify the enclosure to accommodate the additional girth of the
    sleeved wires.
  • Order a few small bits for the W/C loop.
  • Case: Take off a few mm here and there in order for the whole thing to properly fit together,
    finalize the back panel mounting, paint the PSU mount and the back panel radiator mesh
    area as well as other areas that require some touching up.
  • Figure out how to best lay out the water loop.
  • Assemble.
  • Test.
  • Rejoice, curse and/or cry.
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