PWM Fan splitter board/controller

m0n4g3 · 31st July 2010, 7:14 PM

So i've been thinking and wondering if there is a fan splitter board that allows for PWM adjustments directly from the motherboard.

EG if i was to connect my 3 S-Flex 1900rpm 120mm fans up to this so called PWM control board supply, and then that connects back to the motherboard CPU-FAN pwm header to allow for speed fan controls and also rpm readouts?

This way i can also do the same for the rest of the case fans (3x200mm fans) and almost get a silent case!

If there are these available where can i get them from?

If not, is there an easy way to get this done? I'm no electronics expert, but i'm sure i could get some PCB breadboard and a couple of resistors and IC's soldered up

Any help would be greatly appreciated guys!

Thanks

DarkYendor · 31st July 2010, 7:27 PM

I'm not 100% sure what you're asking for. You want to control non-PWM fans with a PWM signal, is that it?

m0n4g3 · 31st July 2010, 8:28 PM

No. want to control hi powered PWM fans, through the one fan header on the motherboard.

But due to the fact that they are approximately 7w fans each, i'd be worried that it'd blow out the fan header on the motherboard.

So use a board of some sort to get a molex/floppy drive connector power the fans, but still send the pwm signal and rpm signal back to motherboard for controlling the fans.

I have 3x 120mm fans on the radiator that i would like to get tied to the cpu_fan pwm.

Then the other 3x 200mm fans tied to the system fan 1 connector.

Make sense now?

DarkYendor · 31st July 2010, 9:32 PM

So your scythe fans have 4-pin fan connectors? If so, you should just be able to connect the 12v and 0v lines to molex power, connect all the PWM lines to one header, and just leave all the PWM lines except for one disconnected. But make sure they're all the same model of fan.

31st July 2010, 7:14 PM	#1
m0n4g3 Member Join Date: Aug 2009 Location: Kalgoorlie, WA Posts: 1,183	PWM Fan splitter board/controller So i've been thinking and wondering if there is a fan splitter board that allows for PWM adjustments directly from the motherboard. EG if i was to connect my 3 S-Flex 1900rpm 120mm fans up to this so called PWM control board supply, and then that connects back to the motherboard CPU-FAN pwm header to allow for speed fan controls and also rpm readouts? This way i can also do the same for the rest of the case fans (3x200mm fans) and almost get a silent case! If there are these available where can i get them from? If not, is there an easy way to get this done? I'm no electronics expert, but i'm sure i could get some PCB breadboard and a couple of resistors and IC's soldered up Any help would be greatly appreciated guys! Thanks __________________ i5-2500k @ 4.5ghz with EK Supreme-HF \| Asus Maximus 4 Gene-z Gen3 \| Crossfire HIS 7970 with EK CU Blocks \| G.Skill Ripjaws Z 2133CL11 \| 120gb Vertex 3 \| Xigmatek Elysium \| Danger Den Monsoon D5 Dual Res bay, Koolance PMP-450 Pump \| 2x XSPC RX360 Rads with 3xScythe Slipstream 1900rpm each \| 3/8" Danger Den Black UV tubing \| Red Monsoon Compression fittings

31st July 2010, 7:27 PM	#2
DarkYendor Member Join Date: Feb 2008 Location: Perth Posts: 2,841	I'm not 100% sure what you're asking for. You want to control non-PWM fans with a PWM signal, is that it? __________________ RIG: \| i5 2500k @4.5 \| Asus P8P67 Pro \| GTX460 SLI \| 8GB DDR3-1600 \| Corsair F120 SSD \| 2x Dell U2311H \| C&C: \| LianLi PC-A71B \| Swiftech MCP655 \| Swiftech MCR320-QP, MCR240-QP \| Heatkiller 3.0 \| TABLET: \| Samsung Series 7 Slate (XE700T1A-A01US) \| - PHONE: \| iPhone 5 32GB \| SERVER: \| i3 3220 \| 8GB DDR3 \| 16TB + SSD \| - BACKUP SERVER: \| Intel D945GCLF2 \| 1GB DDR2 \| 8TB \| Successful OCAU trades / New blog & buildlogs

31st July 2010, 8:28 PM	#3
m0n4g3 Member Join Date: Aug 2009 Location: Kalgoorlie, WA Posts: 1,183	No. want to control hi powered PWM fans, through the one fan header on the motherboard. But due to the fact that they are approximately 7w fans each, i'd be worried that it'd blow out the fan header on the motherboard. So use a board of some sort to get a molex/floppy drive connector power the fans, but still send the pwm signal and rpm signal back to motherboard for controlling the fans. I have 3x 120mm fans on the radiator that i would like to get tied to the cpu_fan pwm. Then the other 3x 200mm fans tied to the system fan 1 connector. Make sense now? __________________ i5-2500k @ 4.5ghz with EK Supreme-HF \| Asus Maximus 4 Gene-z Gen3 \| Crossfire HIS 7970 with EK CU Blocks \| G.Skill Ripjaws Z 2133CL11 \| 120gb Vertex 3 \| Xigmatek Elysium \| Danger Den Monsoon D5 Dual Res bay, Koolance PMP-450 Pump \| 2x XSPC RX360 Rads with 3xScythe Slipstream 1900rpm each \| 3/8" Danger Den Black UV tubing \| Red Monsoon Compression fittings

31st July 2010, 9:32 PM	#4
DarkYendor Member Join Date: Feb 2008 Location: Perth Posts: 2,841	So your scythe fans have 4-pin fan connectors? If so, you should just be able to connect the 12v and 0v lines to molex power, connect all the PWM lines to one header, and just leave all the PWM lines except for one disconnected. But make sure they're all the same model of fan. __________________ RIG: \| i5 2500k @4.5 \| Asus P8P67 Pro \| GTX460 SLI \| 8GB DDR3-1600 \| Corsair F120 SSD \| 2x Dell U2311H \| C&C: \| LianLi PC-A71B \| Swiftech MCP655 \| Swiftech MCR320-QP, MCR240-QP \| Heatkiller 3.0 \| TABLET: \| Samsung Series 7 Slate (XE700T1A-A01US) \| - PHONE: \| iPhone 5 32GB \| SERVER: \| i3 3220 \| 8GB DDR3 \| 16TB + SSD \| - BACKUP SERVER: \| Intel D945GCLF2 \| 1GB DDR2 \| 8TB \| Successful OCAU trades / New blog & buildlogs