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Need to control 20 fans

post #1 of 30
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Hey guys I recently cut my teeth on my first custom CPU loop and have been itching ever since to do a monster WC build. With the imminent arrival of the 900D that time has come.
So my situation is this, I plan on running two 480 rads in push/pull so that's obviously 16 fans plus case fans which should be around 20 fans total. On my current build I have a 4 channel controller in the case and an additional Lamptron 4 channel bay mounted controller. Obviously for my new build that sort of arrangement is just not going to cut it. So how does one in this situation avoid using lots of bay mounted fan controllers? Any suggestions/recommendations would be appreciated thanks.thumb.gif
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post #2 of 30
Quote:
Originally Posted by Bloodbath View Post

Hey guys I recently cut my teeth on my first custom CPU loop and have been itching ever since to do a monster WC build. With the imminent arrival of the 900D that time has come.
So my situation is this, I plan on running two 480 rads in push/pull so that's obviously 16 fans plus case fans which should be around 20 fans total. On my current build I have a 4 channel controller in the case and an additional Lamptron 4 channel bay mounted controller. Obviously for my new build that sort of arrangement is just not going to cut it. So how does one in this situation avoid using lots of bay mounted fan controllers? Any suggestions/recommendations would be appreciated thanks.thumb.gif

personally i would suggest wiring up a sort of daisy chain of female fan headers, coming to one final male header which can then plug into a fan controller.

so 8 fans on each header would mean you can control the speed of all fans on one dial for that sincle radiater, do the same for the other. that said, a six channel controller will allow you to have four spar for your chassis fans
alternately you could wire four fans (each side of rad) to one header and use two fan controllers (four or six channel) and lessen the strain on the controller
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post #3 of 30
When I was water cooling, I used something like this:

http://www.frozencpu.com/products/14662/ele-988/3-Pin_Power_Distribution_PCB_5xWay_Block_MMT-PCB-5WAY.html?tl=g47c121s424

If you look around, there are larger as well, but this is just an example. I had a fan controller that did 30W per channel, if I remember correctly, which can handle a whole bunch of fans. I am not sure if they make an 8 port, but if they did, you could plug 8 fans into this device, and then this device into 1 of the fan controller ports. I made a custom length cable which is just a 3 pin fan connector at each side to plug it in. With this setup, you can control the fan speed of one rad with one fan controller port. If they don't make an 8, you can do dual 4s per rad and each switch on the controller would do 4 of the fans.

If there is an easier way, I am not sure what it is, and this worked well for me.
post #4 of 30
Quote:
Originally Posted by yanks8981 View Post

When I was water cooling, I used something like this:

http://www.frozencpu.com/products/14662/ele-988/3-Pin_Power_Distribution_PCB_5xWay_Block_MMT-PCB-5WAY.html?tl=g47c121s424

If you look around, there are larger as well, but this is just an example. I had a fan controller that did 30W per channel, if I remember correctly, which can handle a whole bunch of fans. I am not sure if they make an 8 port, but if they did, you could plug 8 fans into this device, and then this device into 1 of the fan controller ports. I made a custom length cable which is just a 3 pin fan connector at each side to plug it in. With this setup, you can control the fan speed of one rad with one fan controller port. If they don't make an 8, you can do dual 4s per rad and each switch on the controller would do 4 of the fans.

If there is an easier way, I am not sure what it is, and this worked well for me.

basically what i said wink.gifthumb.gif
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post #5 of 30
Quote:
Originally Posted by wthenshaw View Post

basically what i said wink.gifthumb.gif

You posted as I was typing smile.gif
post #6 of 30
Admittedly, I have not tried the idea i'm about to propose and don't know IF it would work (voltage/power limitations), but here it is.

Maybe you could splice the wires of multiple fans together before connecting them to the fan controller. If your fan controller is how I imagine it, say 4 knobs to control each fans speed, you could make each knob in turn controll a fan cluster instead of just a single fan. It shouldn't be terribly hard to do with the right tools, but I'm not sure if you're willing to go that route. I'm also not sure if routing additional fans into the controller like that would go over what it can handle. I have other ideas on modifying the fan controller to MAKE it handle more power, but I'll save that for if you're interested smile.gif

Nice project in the end though, and I'd love to see pics of everything in action once you get it going. Maybe a before and after, so we can see what we're working with now?
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post #7 of 30
Quote:
Originally Posted by yanks8981 View Post

When I was water cooling, I used something like this:

http://www.frozencpu.com/products/14662/ele-988/3-Pin_Power_Distribution_PCB_5xWay_Block_MMT-PCB-5WAY.html?tl=g47c121s424

If you look around, there are larger as well, but this is just an example. I had a fan controller that did 30W per channel, if I remember correctly, which can handle a whole bunch of fans. I am not sure if they make an 8 port, but if they did, you could plug 8 fans into this device, and then this device into 1 of the fan controller ports. I made a custom length cable which is just a 3 pin fan connector at each side to plug it in. With this setup, you can control the fan speed of one rad with one fan controller port. If they don't make an 8, you can do dual 4s per rad and each switch on the controller would do 4 of the fans.

If there is an easier way, I am not sure what it is, and this worked well for me.

Yeah, this is a much easier way to do what I was thinking. tongue.gif He posted it while I was typing. Go with this biggrin.gif
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post #8 of 30
Im sure cpachris has done something like this in his BBBB that he is still working on, if i find his method i will link
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post #9 of 30
Quote:
Originally Posted by yanks8981 View Post

When I was water cooling, I used something like this:

http://www.frozencpu.com/products/14662/ele-988/3-Pin_Power_Distribution_PCB_5xWay_Block_MMT-PCB-5WAY.html?tl=g47c121s424

If you look around, there are larger as well, but this is just an example. I had a fan controller that did 30W per channel, if I remember correctly, which can handle a whole bunch of fans. I am not sure if they make an 8 port, but if they did, you could plug 8 fans into this device, and then this device into 1 of the fan controller ports. I made a custom length cable which is just a 3 pin fan connector at each side to plug it in. With this setup, you can control the fan speed of one rad with one fan controller port. If they don't make an 8, you can do dual 4s per rad and each switch on the controller would do 4 of the fans.

If there is an easier way, I am not sure what it is, and this worked well for me.

So Yanks, I have a Lamptron FC5 V2. Your saying with each one of these blocks. I can plug into one channel & control all the fans that's connected to that one block with that one channel? No overload or anything?
 
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post #10 of 30
Quote:
Originally Posted by PatrickCrowely View Post

So Yanks, I have a Lamptron FC5 V2. Your saying with each one of these blocks. I can plug into one channel & control all the fans that's connected to that one block with that one channel? No overload or anything?

Without looking up that controller, I am not sure what the watts per channel are, but as long as you dont overload it, it would be fine. I was doing 4 fans per channel on mine without issues. From what I've read, the amount of wattage a fan uses is incredibly low. Lets say your controller was 20W per port, I wouldn't see a problem with putting 8 fans per port without issue. I'm far from being an electrician, but I read about this awhile back when doing this on my water build.

Edit:

Is this your controller?

http://lamptron.com/products/view/Fan_Controller_FC5V2

If so, it says 30W per channel. I have a Corsair fan here that says its 12V DC, 0.25A. Since Volt*Amp = Watt (so i've read), it's using 3W. By that math, I should be able to run 10 of them on one port on your fan controller. I probably wouldnt load 10 on it, but I would feel comfortable with 8.
Edited by yanks8981 - 1/14/13 at 7:51am
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