Overclock.net › Forums › Cooling › Other Cooling Discussions › Newly built PWM Controller doesn't work!
New Posts  All Forums:Forum Nav:

Newly built PWM Controller doesn't work!

post #1 of 2
Thread Starter 
Hello world!

Found this page http://www.overclockers.com/pwm-fan-controller a while back and decided to have a go at the 556 pwm controller which is located about halfway down the page...

Bought the components and put it all together, and I can't control my testfan, it just goes directly to 100% and stays there, I removed the wire going from the potentiometer to the 4th pin (PWM) of the fan, and nothing changed, so to me that indicated that the problem lies somewhere else in the circuit. I didn't expect it to work right away, but I'm not sure where to look either...measured between current input and output and I have 5 volts going through the circuit, and no components have blown up/started smoking so great sucess so far smile.gif

I've also measured to check that I have contact on the soldering joints on the circuit, which I have, but of course I could have missed something, so I was hoping that someone here could help out...
post #2 of 2
It really has no secret. If it is not working, it's because the signal generating 555 isn't working.

I can't say anything but... Double check the wiring. Because it works tongue.gif
   
AGP bencher
(14 items)
 
CPUMotherboardGraphicsRAM
Phenom X6 1055T ASUS M4A89GTD Pro/USB3 Sapphire HD 6950 2GiB GSKill Ares 2x4GiB 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 Seagate 7200.14 Samsung SpinPoint F3 EK Supreme HF 
CoolingCoolingCoolingCooling
EK CoolStream XT360 Alphacool Coolplex Pro 10LT Phobya DC12-400 XSPC Rasa GPU 
OSMonitorMonitorKeyboard
W10 Pro LG IPS235V LG E2250V KUL ES-87 
PowerCaseMouseAudio
NOX Sonar 780W (Kingwin 750W 80+) Lian Li PC-A05NB Logitech G9 ASUS Xonar DX 
AudioAudioAudioOther
Sennheiser HD555 SMSL SA S3 Desktop Amplifier Kenwood KFC S1394 + Custom 10L Bass Reflex cabi... Logitech G25 
CPUMotherboardRAMHard Drive
AMD A10-5700 Gigabyte F2A75M-HD2 G.SKILL Ares 2133 CL9 Hitachi 5K750 
CoolingOSMonitorPower
Noctua NH-L9a Citrix XenServer AUO B156HW01  PicoPSU-80-WI-25V 
CaseOther
AIO Aluminium Handmade Alfa Networks N-150 500mW 
CPUCPUCPUMotherboard
Core2Duo E6400 Core2Quad Q6600 Pentium Dual Core E5200 AsRock 4COREDUAL-SATA2 R2.0 
GraphicsRAMHard DriveOptical Drive
A dumpload of ancient AGP cards Kingston Value DDR2-667 CL4 2T @CL3 1T Seagate 160GB 7200.10 LG IDE DVD-ROM 
CoolingCoolingOSMonitor
Ghettomade CPU waterblock 49cc 2stroke engine copper radiator WinXP SP2 32bit ProView 17" 
PowerCase
Tacens Radix V 550W Ghetto aluminium bench 
  hide details  
Reply
   
AGP bencher
(14 items)
 
CPUMotherboardGraphicsRAM
Phenom X6 1055T ASUS M4A89GTD Pro/USB3 Sapphire HD 6950 2GiB GSKill Ares 2x4GiB 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 Seagate 7200.14 Samsung SpinPoint F3 EK Supreme HF 
CoolingCoolingCoolingCooling
EK CoolStream XT360 Alphacool Coolplex Pro 10LT Phobya DC12-400 XSPC Rasa GPU 
OSMonitorMonitorKeyboard
W10 Pro LG IPS235V LG E2250V KUL ES-87 
PowerCaseMouseAudio
NOX Sonar 780W (Kingwin 750W 80+) Lian Li PC-A05NB Logitech G9 ASUS Xonar DX 
AudioAudioAudioOther
Sennheiser HD555 SMSL SA S3 Desktop Amplifier Kenwood KFC S1394 + Custom 10L Bass Reflex cabi... Logitech G25 
CPUMotherboardRAMHard Drive
AMD A10-5700 Gigabyte F2A75M-HD2 G.SKILL Ares 2133 CL9 Hitachi 5K750 
CoolingOSMonitorPower
Noctua NH-L9a Citrix XenServer AUO B156HW01  PicoPSU-80-WI-25V 
CaseOther
AIO Aluminium Handmade Alfa Networks N-150 500mW 
CPUCPUCPUMotherboard
Core2Duo E6400 Core2Quad Q6600 Pentium Dual Core E5200 AsRock 4COREDUAL-SATA2 R2.0 
GraphicsRAMHard DriveOptical Drive
A dumpload of ancient AGP cards Kingston Value DDR2-667 CL4 2T @CL3 1T Seagate 160GB 7200.10 LG IDE DVD-ROM 
CoolingCoolingOSMonitor
Ghettomade CPU waterblock 49cc 2stroke engine copper radiator WinXP SP2 32bit ProView 17" 
PowerCase
Tacens Radix V 550W Ghetto aluminium bench 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Other Cooling Discussions
Overclock.net › Forums › Cooling › Other Cooling Discussions › Newly built PWM Controller doesn't work!