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fan controller help - Page 2

post #11 of 13
Thread Starter 
Quote:
Originally Posted by Microx256 View Post

If you like DIY, you can do what I did wink.gif



Basically I wired a custom fan controller, with on-off switches as well.

Stuff I used:
12x 0-100 Ohm variable resistors (those round knobs), 1 euro each from a local DIY store
12x flip-switches, 50 cents each from a local DIY store
3x "molex to 4x 3-pin fans" cables, 1 euro each from a local computer store
a few meters of regular wire Free for me since I stripped them from an old broken PSU
a dremel to cut the holes in the front panel
-> total cost roughly 20 euro, excluding the dremel, and I got a 12-fan fan controller with full on-off functionality

Basically the wiring was as follows:
- cut all of the "molex to 4x 3-pin fan" cables in half, so that i got the molex side, and the 3-pin fan side both with wires
- solder extra extension wires to the 12V and ground wires of the molex connectors
- soldered a switch to each of the 12 "extension wires" coming from the 12V wire
- soldered some more wire to the other end of the switches
- soldered the 0-100ohm VR knobs to each of these wires
- soldered some more wire to the other end of the VR's
- soldered the + wire of each "3-pin fan" header into the 'extension wires' coming from the VR's
- soldered some more wire to the - wire of each "3-pin fan" header
- soldered all of these into the ground wire of the molex connector

so basically the "circuit": molex +12V -> flip switch -> VR -> fan header + -> fan header - -> molex ground, where there was 12 of those in parallel, all sharing the same molex plug though, so I needed only one molex from PSU to drive all 12 fans. biggrin.gif

(note: the six "1/0 switches" on the topmost row are on-off controls for the RGB leds inside the case, unrelated to this "fan controller")

I would like to take on a project like that someday. But right now I would just like to find a 15 + watt single fan controller (rheostat?). Just one knob and I can adjust all my fans with one of these boards http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=60_392&products_id=32022 If I get a rheostat how many ohms should it be? I'm lost on that one.
Edited by hucklebuck - 1/10/14 at 8:30am
Movin' on Up
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveCoolingCooling
SAMSUNG SSD 840 Liteon IHAS 524 DVD writer  XSPC Raystorm CPU Waterblock (2) EK-PSC Adapter 90° G1/4 Black Nickel 
CoolingCoolingCoolingCooling
EK Radeon HD 7950 VGA Liquid Cooling Block Alphacool NexXxoS XT45 Full Copper 360mm Radiator Swiftech MCP655 XSPC Single Bay Reservoir 5.25" 
CoolingCoolingCoolingCooling
(6) Swiftech Helix 120MM 9-Blade Z-Bearing Fan ... (10) XSPC G1/4" to 1/2" ID, 3/4" OD Compression... PrimoFlex Advanced LRT Tubing - 1/2in. ID X 3/4... (2) EK-PSC Adapter 45° G1/4 Nickel 
OSMonitorKeyboardPower
Windows 7 64bit Samsung SyncMaster P2370HD  Logitech K300 Rosewill Tachyon-650 
CaseMouseMouse Pad
CoolerMaster HAF Stacker 935 Logitech Allsop 
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Movin' on Up
(23 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8320 ASUS SABERTOOTH 990FX R2.0 MSI R7950-3GD5/OC BE Samsung 8GB DDR3-1600 (PC3-12800) 
Hard DriveOptical DriveCoolingCooling
SAMSUNG SSD 840 Liteon IHAS 524 DVD writer  XSPC Raystorm CPU Waterblock (2) EK-PSC Adapter 90° G1/4 Black Nickel 
CoolingCoolingCoolingCooling
EK Radeon HD 7950 VGA Liquid Cooling Block Alphacool NexXxoS XT45 Full Copper 360mm Radiator Swiftech MCP655 XSPC Single Bay Reservoir 5.25" 
CoolingCoolingCoolingCooling
(6) Swiftech Helix 120MM 9-Blade Z-Bearing Fan ... (10) XSPC G1/4" to 1/2" ID, 3/4" OD Compression... PrimoFlex Advanced LRT Tubing - 1/2in. ID X 3/4... (2) EK-PSC Adapter 45° G1/4 Nickel 
OSMonitorKeyboardPower
Windows 7 64bit Samsung SyncMaster P2370HD  Logitech K300 Rosewill Tachyon-650 
CaseMouseMouse Pad
CoolerMaster HAF Stacker 935 Logitech Allsop 
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post #12 of 13
Sidewinder 25 watt Rheostat - Sleeved!
My System
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FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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Reply
post #13 of 13
Quote:
Originally Posted by hucklebuck View Post

Quote:
Originally Posted by Microx256 View Post

If you like DIY, you can do what I did wink.gif



Basically I wired a custom fan controller, with on-off switches as well.

Stuff I used:
12x 0-100 Ohm variable resistors (those round knobs), 1 euro each from a local DIY store
12x flip-switches, 50 cents each from a local DIY store
3x "molex to 4x 3-pin fans" cables, 1 euro each from a local computer store
a few meters of regular wire Free for me since I stripped them from an old broken PSU
a dremel to cut the holes in the front panel
-> total cost roughly 20 euro, excluding the dremel, and I got a 12-fan fan controller with full on-off functionality

Basically the wiring was as follows:
- cut all of the "molex to 4x 3-pin fan" cables in half, so that i got the molex side, and the 3-pin fan side both with wires
- solder extra extension wires to the 12V and ground wires of the molex connectors
- soldered a switch to each of the 12 "extension wires" coming from the 12V wire
- soldered some more wire to the other end of the switches
- soldered the 0-100ohm VR knobs to each of these wires
- soldered some more wire to the other end of the VR's
- soldered the + wire of each "3-pin fan" header into the 'extension wires' coming from the VR's
- soldered some more wire to the - wire of each "3-pin fan" header
- soldered all of these into the ground wire of the molex connector

so basically the "circuit": molex +12V -> flip switch -> VR -> fan header + -> fan header - -> molex ground, where there was 12 of those in parallel, all sharing the same molex plug though, so I needed only one molex from PSU to drive all 12 fans. biggrin.gif

(note: the six "1/0 switches" on the topmost row are on-off controls for the RGB leds inside the case, unrelated to this "fan controller")

I would like to take on a project like that someday. But right now I would just like to find a 15 + watt single fan controller (rheostat?). Just one knob and I can adjust all my fans with one of these boards http://www.performance-pcs.com/catalog/index.php?main_page=product_info&cPath=60_392&products_id=32022 If I get a rheostat how many ohms should it be? I'm lost on that one.

I have 100 ohm VRs/potentiometers in use. Some of the "low rpm" fans don't like it at "max low" (=highest resistance) and thus wont spin then, but that's just enough to make the most noisy high-rpm fans inaudible smile.gif

Quote:
Originally Posted by billbartuska View Post

Sidewinder 25 watt Rheostat - Sleeved!

I am not convinced with that "6 ohm resistance" there, unless that means the minimum resistance.. But well, since it seems they have tested it and got it working, so probably that is a working thing then rolleyes.gif
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Minimachine
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i7-5775C Asus Maximus VII Impact EVGA GTX1080 Founders edition 2x8GB Kingston HyperX 1600Mhz 
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