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LED control via the Fan controller

post #1 of 13
Thread Starter 
Hey so, just need to ask if this will be possible.

Here's a simple paint example before you start reading.
http://oi44.tinypic.com/dlgbj5.jpg

I have Leds connected to the Bitspower X-station then 4 pin molex to 3 pin converter coming out it's power and going into the fan controller's 3 pin connector.



( for your reference)
http://www.frozencpu.com/products/7613/bus-140/Bitspower_X-Station_Power_Extension_I_-_UV_LED_BP-XSP1M-UV.html - X station
http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=34_82&products_id=608 - The 4 pin to 3 pin converter cable )

I ultimately want to control all the LEDs plugged into the X-station by the fan controller.

Can my 3 pin fan controller's plug power up the bitspower X station and all its leds?
post #2 of 13
According to the Bitspower x station description, your idea should work. From my limited understanding, the only difference between a molex and 3 pin is the molex has 2 black/ground cables. But the thing that just crossed my mind is how the x station will interpret the lowering voltage from the fan controller. I say give it a try with a few led's first.
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Boinzy
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post #3 of 13
Thread Starter 
You have a point...
Maybe since the fan controller regulates voltage , it will also regulate the voltage for all the things on the x-station. But I have no idea really.

Do you think I could come up with something easier? I could just plug the LED's to the power supply and unplug if wanted, but it'd be neat to have a controller or at least a switch for them.
post #4 of 13
This is, for the LEDs, what do you want to do? Dim them, or just shut them off without turning the fan off?
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Boinzy
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post #5 of 13
Thread Starter 
Simply turn a group of leds on and off. There is no fan.

Dim if its possible but not necessary at all
Edited by Vesko1991 - 2/22/12 at 3:11am
post #6 of 13
You could wire the LED's to a switch with little trouble. That would take care of the on/off (an example can be found with the top 4 results here)

Not sure about dimming them. In theory, lowering the voltage should lessen the output, thus dimming the lights. In practice, lowering the voltages too much would simply turn the lights off.
post #7 of 13
LEDs have a limited amount of dimmability since they aren't really designed for it. Probably the easiest would be to get a front switch panel and wire them to that.


I believe what that X-station does for the different voltages (on the 3-pin headers) is some are connected across the +12V and Gnd, some are across +5V and Gnd, while the others are across +12V and +5V to give a net +7V power. This would use both the +12V and +5V supplies from the molex and as such couldn't really be used powered from a 3-pin to molex adapter since the fan headers only have a +12V (no +5V) supply.
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post #8 of 13
Thread Starter 
Is there a way that I can wire those leds alltogether to the fan controller?

I don't know how to do that, since there are 3 leds all wired to separate connectors.
Edited by Vesko1991 - 2/22/12 at 10:58am
post #9 of 13
If they're all pre-wired with molex or 3-pin connectors, then simply get a splitter and plug them into the splitter.

Personally, I don't buy pre-tailed LEDs, but rather the bare LEDs and wire them up with whatever wire length I need and add in the appropriate resistors.
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RAD GT
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post #10 of 13
Thread Starter 
How hard is it to do that? I've never done anything like that.
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