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[Guide] Adding a switch for the Cooler Master Megaflow leds

post #1 of 41
Thread Starter 

Hello everyone,
I posted this in the HAF club thread but This can be used for any Cooler Master Megaflows. So I thought let's post it in a more general place.

I wanted to replace the 200mm fans on the HAF-X with Cooler Master Megaflow red led fans, but I wanted to be able to switch off the leds without switching off the fans.
After searching the internet for some guide on how to add a led switch on led fans I found a good guide.
This guide instructed to connected all the ground sides of the leds and connect that to a switch.
The other end of the switch should be connected to a ground wire from the PSU.

Seeing the front 230mm fan leds can already be controlled by a switch on the HAF-X, I took a look at circuit board on that fan.
I found out that the switch was connected to the +12v side. So I thought I had to change the wires on it.
Here's a pic of the 230mm fan circuit:

You can see the 2 wires on the circuit interrupt. The switch allows the connection between the 2 points.

After getting the Cooler Master Megaflow red led fans I took off the middle sticker and checked that circuit board.
At the place where the 230mm fan had it's led switch wires connected, there was some sort of bridge on these 200mm Megaflows.
Here's a pic of the 200mm fan circuit:

This bridge allows the voltage to pass through.

You can see the small bridge on th 2 points where the 230mm has the wires connected.
So I fired up the solder iron and removed the bridge.
After that I attached the wires like the 230mm has (yeah I switched red and brown. In the end I had to connect the 230mm black wires to all the 200mm red wires. Stupid mistake).
Here's how it should look like after removing the bridge and soldering the wires on the 2 points (I suck at soldering so don't judge the mess ):


I did this to all 3 Megaflows I wanted to add to my case and attached all the red wires and all the brown wires (except for the 230mm which had the wires the other way around) and attached the red wires to the red of the switch and the brown wires to the black of the switch.
This way I control all the leds on all fans by 1 switch without turning off the fans themselves.

Here's a video of the switch in action with all fans (used the HAF-X led switch):


I hope this guide will help some people that wanted to do the same
If something is unclear, please tell me and I'll explain it a little better.
HAF-X
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HAF-X
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post #2 of 41
Nice, I could use something like this for my computer. haha
    
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post #3 of 41
Very nice. I will be doing something similar for my next build.
post #4 of 41
Thread Starter 
Thanks
Love having all leds on 1 switch. I sleep in the same room as the PC stands, so if I leave it on overnight I just have to push 1 button
HAF-X
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HAF-X
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post #5 of 41
from where these 2 wire came and go were ?

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New Mustang ^_@
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post #6 of 41
Thanks for the guide, now I can use this on my own HAF X. It will be good to know someone has already done the work ahead of me to figure this all out. +Repped.
    
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post #7 of 41
Thread Starter 
Quote:
Originally Posted by red-line View Post
from where these 2 wire came and go were ?

Those 2 wires should be attached to the switch. The switch allows the current to go through the LEDs or to stop the current through them.

Quote:
Originally Posted by Icejon View Post
Thanks for the guide, now I can use this on my own HAF X. It will be good to know someone has already done the work ahead of me to figure this all out. +Repped.
Good to know that the guide helps someone
HAF-X
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HAF-X
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post #8 of 41
Nice job man, out of interest do you know if the power that controls the leds is 12v or not? Was just wondering because if it was i guess you could also wire up cold cathodes etc to the switch
post #9 of 41
Thread Starter 
Quote:
Originally Posted by ears1991 View Post
Nice job man, out of interest do you know if the power that controls the leds is 12v or not? Was just wondering because if it was i guess you could also wire up cold cathodes etc to the switch
Yes it's 12v
Edited by Freaxy - 9/22/10 at 8:09am
HAF-X
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OCZ Vertex 2 (100GB)/Samsung Spinpoint F1 (1TB) Sony Optiarc AD-7240S DVD-RW Windows 7 Ultimate 64-bit LG W2363D 23" 3D vision/LG Flatron W2452TX 24" 
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HAF-X
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Hard DriveOptical DriveOSMonitor
OCZ Vertex 2 (100GB)/Samsung Spinpoint F1 (1TB) Sony Optiarc AD-7240S DVD-RW Windows 7 Ultimate 64-bit LG W2363D 23" 3D vision/LG Flatron W2452TX 24" 
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post #10 of 41
Hey I watched your video. I like that MOD. I want to take it 1 step further. I am wanting to put 3 more fans just like you did, but also 2 Red Cathode light tubes on this switch. Does anyone know if its generally the same circuitry for this?

i bought something like this, accept mine are a deep red that matches the fan LEDs exactly.


http://www.newegg.com/Product/Produc...82E16811994003

Thanks for the help guys.
My System
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My System
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