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First tut from me!!
Today I 'll show you how to control your fans with pc's LPT port ,with software called WndLpt.
Things you need:
1.NPN Transistor(***??) 2N3055 i have,works wonderful
2.Fan you want to control
3.some wires
4.Software wndlpt.sourceforge.net/

That is software for led lightshow (12led) connected to LPT port,and you can manually control LPT 's power output in tab"manual" or "pins" with it,you will see how...

Actually you cant control speed of fan with this software,but you can turn it on and off without having to open your pc case

Lets start

Transistor haves three pins B,C,E.Pic 1

Transistor works simply, when you have BASE(B) current flowing to emitter he will switch on the COLLECTOR(C) current and make it able to flow to the EMITTER(E)(ground).Pic 2

http://www.kpsec.freeuk.com/trancirc.htm (scroll down to "Transistor as switch")

We are using transistor as a swich,so when it gets voltage from LPT port,it gets about 3,3v thru base to emitter,so, it switches on collector current where the fan is,
When you turn the LPT power off, transistor will turn off collector current

you can see shematic on pic2,

LPT pinout here: http://pinouts.ws/lpt-pinout.html

Connect base of transistor to LPT's pin 5

CONNECT EVERYTHING PROPERLY,
I AM NOT RESPONSIBLE IF SOMETHING BAD HAPPENS
INSULATE TRANSISTOR PINS!!

When you done with hardware part,turn on pc and install wndlpt,
Go to "PINS" tab and check first 8 pins with mouse ,it should turn the fan on if you did it ok

If something doesnt work good PM me

GPU?...what?
(14 items)
 
  
CPUMotherboardGraphicsRAM
A6-3670k Gigabyte GA-A55M-DS2 6530D CM3X2G1600C9DHX 
Hard DriveOptical DriveCoolingOS
160GB SATA ASUS DRW-24B5ST Stock Windows 8 
Power
Seasonic S12II SS-430GB 
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GPU?...what?
(14 items)
 
  
CPUMotherboardGraphicsRAM
A6-3670k Gigabyte GA-A55M-DS2 6530D CM3X2G1600C9DHX 
Hard DriveOptical DriveCoolingOS
160GB SATA ASUS DRW-24B5ST Stock Windows 8 
Power
Seasonic S12II SS-430GB 
  hide details  
Reply