Tips To Make Your Fan To Reach The Highest Speed, @ To Make Your Fan Slower & Less Noisy
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 Jun 20 2006, 10:04 AM, updated 20y ago
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#1
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All Stars
14,909 posts Joined: Jul 2005  
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I wonder...
Would this prove useful for everyone? I'm thinking of posting some pictures on how to making the fan on the heatsink turns in the maximum speed... This thread is only for those fans that uses the 3pin / 4pin that must be connected to the motherboard fan pin... It's a simple modification yet, it's very useful for everyone...  I'm done with editing, posting it now... This post has been edited by sHawTY: Jun 27 2006, 01:15 PM |
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Jun 20 2006, 10:18 AM
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#2
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Senior Member
2,660 posts Joined: Jan 2003 From: Somewhere in the world
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Just post it and then everyone could review it and post their opinion
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Jun 20 2006, 10:20 AM
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#3
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All Stars
14,909 posts Joined: Jul 2005
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Step 1)
Knowing your 3 Pin Female Fan Molex I've state it as Pin1, Pin2, and Pin3 Take a look at the picture: Side Closeup [attachmentid=117190] Top Closeup [attachmentid=117191] Take note that there are alot of fan manufacturers that uses different kind of wire colors, so don't remember by the color, remember it by the position... Just make sure that when u look at the top of the fan molex, u see the 2 plastic lock (The one that is on the left and the right)  Remember which pin is number 1, 2 and 3  Do not make mistakes... Step 2 Knowing your motherboard 3 Pin Male header...  Normally, you would put it like this, but remember that by doing this, you would not get the highest speed for your fans and some motheboard stop the fans from operating... [attachmentid=117174] Take a look at the picture, this board is a socket 478 board, so it'll be using 3 Pin fans...  [attachmentid=117175] Step 3 Knowing your PSU molex wires... I will not type a lot of things here... Just look at the picture and you will understand it by yourself... [attachmentid=117176] [attachmentid=117177] Step 4) Taking out the 2 pins (+Ve [Positive] Wire & the -Ve [Negative Wire]) from the fan molex connecter... Take note please, just take out the pin 1 and pin 2... Leave the pin 3 on the molex as the pin 3 is used for Speed Sensoring... For this step, u need to use a sharp tools such as a small flat screwdriver as seen in the picture... **Becareful with sharp items, it could harm you***  a) Push the pin 1 lock [attachmentid=117179] b) Push the pin 2 lock [attachmentid=117180] Then, this is what you'll get: **Remember which wire is the pin 1 and which is pin 2...** <-- Important!!! [attachmentid=117181] Step 5 Putting the pulled out pin 1 and pin 2 into the Female PSU molex connector You have two choices here, either to maxed out your fan speed, or to make your fan silence... Remember which wire on the molex psu is the 12 volts or 5 volts? Well if you don't this is the easiest way to recognise it: Yellow Wire on PSU female molex connecter : +VE Positive 12Volts Red Wire on PSU female molex connecter : +VE Positive 5Volts Two Black Wire on PSU female molex connecter : -VE Negative Choice 1) [Full speed 24/7] Put the Pin 2 into the Yellow wire PSU molex hole and put the Pin 2 into any Black wire PSU molex hole... [attachmentid=117192] Choice 2) [Low Speed @ Low Noise 24/7]  Put the Pin 2 into the Red wire PSU molex hole and put the Pin 2 into any Black wire PSU molex hole... [attachmentid=117193] Final Step Putting the FAN female molex connecter to the motherboard male 3 pin header... Do as what you've seen in the picture... This is important so you could now how fast your fan is operating... [attachmentid=117184] The end of the modification would look like this: [attachmentid=117185] Done!!!  This post has been edited by sHawTY: Jun 27 2006, 01:09 PM |
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Jun 20 2006, 10:50 AM
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#4
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VIP
23,414 posts Joined: Jan 2003 From: Taipei
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Plug directly into the psu kau tim already wat.
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Jun 20 2006, 11:53 AM
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#5
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Junior Member
159 posts Joined: Nov 2004
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yup i'd very interested to learn
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Jun 20 2006, 11:58 AM
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#6
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Senior Member
2,660 posts Joined: Jan 2003 From: Somewhere in the world
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but then the fan would spin at the max speed plus the noise would be unbearable....
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Jun 20 2006, 05:42 PM
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#7
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Senior Member
2,851 posts Joined: Jun 2006
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If you have 3-pin connector and you connect to the 4-pin on mainboard you get full speed all the time right? I see some HSF box description got write it as "foolproof" intheir specs
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Jun 20 2006, 06:14 PM
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#8
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All Stars
10,688 posts Joined: Jan 2005
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QUOTE(sniper on the roof @ Jun 20 2006, 10:50 AM) Plug directly into the psu kau tim already wat. tot using controller better than direct plug to PSU??   |
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Jun 20 2006, 06:37 PM
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#9
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23,414 posts Joined: Jan 2003 From: Taipei
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Actually I don't really know what's the purpose of this also.... I don't want my fan to run full speed.....I wanna run fanless if I can.
For everthing else....there's always tornadoes and focus flows. |
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Jun 27 2006, 01:13 PM
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All Stars
14,909 posts Joined: Jul 2005
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There, I'm done with my tips on how to maxed out to reach maximum speed and highest CFM out of your fan or how to slow your fan speed so it would be less noisy...
Any comments is much appreciated!!!  Chiao!!!  |
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Jun 27 2006, 01:20 PM
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All Stars
14,909 posts Joined: Jul 2005
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This time, i only post out on how to maxed out those fan with 3 pin...
For those 4 pins fans users, please wait for a while as i have a lot of things to do now... Really sorry for the delay of the 4 pin fans speed modifications... |
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Jun 27 2006, 01:26 PM
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Junior Member
395 posts Joined: Jan 2003
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This thread is useful for those that wanna learn sth new.
Shawty, maybe u can include a guide to add a variable fan speed controller for us when u have time  |
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Jun 27 2006, 01:29 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(Li[Q]uiD @ Jun 27 2006, 01:26 PM) This thread is useful for those that wanna learn sth new. Ahahaha...Shawty, maybe u can include a guide to add a variable fan speed controller for us when u have time The problem is, i didn't even know how to make that so called "Variable fan speed controller" Maybe i'll ask my brother to built one and later on will post it in this thread on how to do it... Or should i copyright it so no one could steal our design? Muahahaha...  Just kidding... i'll ask him to do it later on... |
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Jun 27 2006, 10:04 PM
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Senior Member
4,561 posts Joined: Jan 2003 From: Penangites 
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if i wanted to make articles like this, i think i'm gonna take up a lot of space......
bro, you still got a long way to go and btw, make sure that the header to the molex stays there or else they might cause a short in the PSU |
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Jun 27 2006, 10:07 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(AllnGap @ Jun 27 2006, 10:04 PM) if i wanted to make articles like this, i think i'm gonna take up a lot of space...... Thanks for your comment...bro, you still got a long way to go and btw, make sure that the header to the molex stays there or else they might cause a short in the PSU Just trying to help those newbies in computerisation <--- [I don't even know what's the meaning of that word] This post has been edited by sHawTY: Jun 27 2006, 10:07 PM |
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Jun 28 2006, 01:03 AM
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Junior Member
159 posts Joined: Nov 2004
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question here: is the mobo fan connector already provide 12v?
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Jun 28 2006, 01:23 AM
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Senior Member
1,526 posts Joined: Jan 2006 From: Between Those Legs Position : Missionary 
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QUOTE(klwoon @ Jun 28 2006, 01:03 AM) question here: is the mobo fan connector already provide 12v? yes it provides 12v too, but the mobo fan connector limits the voltage supplied to the fan, therefore not fully utilizing the fan (max out ).I think ... anyone can help out ?? |
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Jun 28 2006, 10:15 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(zahri @ Jun 28 2006, 01:23 AM) yes it provides 12v too, but the mobo fan connector limits the voltage supplied to the fan, therefore not fully utilizing the fan (max out ). The only way to do that is to connect the fan wires to the PSU molex...I think ... anyone can help out ?? Through it, you'll get the maximum speed 24hours a day... But, that if you can only bear the noise.. |
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Jun 28 2006, 10:47 AM
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Junior Member
159 posts Joined: Nov 2004
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QUOTE(sHawTY @ Jun 28 2006, 10:15 AM) The only way to do that is to connect the fan wires to the PSU molex... i think u mean psu can supply more current than the mobo right?Through it, you'll get the maximum speed 24hours a day... But, that if you can only bear the noise.. well if the noise get annoying jz turn up the speaker volume  |
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Jun 28 2006, 11:02 AM
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VIP
23,414 posts Joined: Jan 2003 From: Taipei
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QUOTE(sHawTY @ Jun 20 2006, 06:15 PM) Step 3 Like that also can...hahahahah... Putting the pulled out pin 1 and pin 2 into the Female PSU molex connector You have two choices here, either to maxed out your fan speed, or to make your fan silence... Remember which wire on the molex psu is the 12 volts or 5 volts? Well if you don't this is the easiest way to recognise it: Yellow Wire on PSU female molex connecter : +VE Positive 12Volts Red Wire on PSU female molex connecter : +VE Positive 5Volts Two Black Wire on PSU female molex connecter : -VE Negative Choice 1) [Full speed 24/7] Put the Pin 2 into the Yellow wire PSU molex hole and put the Pin 2 into any Black wire PSU molex hole... [attachmentid=117192] Choice 2) [Low Speed @ Low Noise 24/7] Put the Pin 2 into the Red wire PSU molex hole and put the Pin 2 into any Black wire PSU molex hole... [attachmentid=117193] That's a lil insecure dun ya think? Suddenly one wire falls off and u'll get a fried cpu..hahahha Better still...just use some spare molex connectors and make a dongle so you can plug the fan onto 12V, 7V or 5V  This post has been edited by sniper on the roof: Jun 28 2006, 11:03 AM |
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Jun 28 2006, 04:37 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(sniper on the roof @ Jun 28 2006, 11:02 AM) Like that also can...hahahahah... 7 Volts setting? That's a lil insecure dun ya think? Suddenly one wire falls off and u'll get a fried cpu..hahahha Better still...just use some spare molex connectors and make a dongle so you can plug the fan onto 12V, 7V or 5V  I just learn that today... |
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Jun 28 2006, 04:55 PM
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Senior Member
5,464 posts Joined: Mar 2005
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speed fan cannot manually force the fan to run at max speed? anyway, nice guide. for variable speed fan can attach a variable resistor but becareful, you might burn one. its recommended to use a proper fan controller as circuit built controllers emits electric pulse rather limiting the electricity via resistor.
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Jun 28 2006, 05:45 PM
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23,414 posts Joined: Jan 2003 From: Taipei
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Actually there's no real benefit of getting the fan run that lil bit extra. A few extra rpm wouldn't make any difference. Besides, most fans are spec'ed to run at +/- 10% of the stated rpm.
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Jun 28 2006, 05:49 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(sniper on the roof @ Jun 28 2006, 05:45 PM) Actually there's no real benefit of getting the fan run that lil bit extra. A few extra rpm wouldn't make any difference. Besides, most fans are spec'ed to run at +/- 10% of the stated rpm. Uhhh...Who says so man? My Hyper 6+ , runs at motherboard ranged speed = 42celcius... when set to highest speed = 40celcius... Who says it won't make any difference? Even if the difference is low, it does make a little difference in the temperature... Uhh... Why are u trying to ruin this thread? |
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Jun 28 2006, 09:15 PM
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23,414 posts Joined: Jan 2003 From: Taipei
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QUOTE(sHawTY @ Jun 28 2006, 05:49 PM) Uhhh... Don't get me wrong.. I'm not trying to ruin anything. Who says so man? My Hyper 6+ , runs at motherboard ranged speed = 42celcius... when set to highest speed = 40celcius... Who says it won't make any difference? Even if the difference is low, it does make a little difference in the temperature... Uhh... Why are u trying to ruin this thread?  I think it's great that you share and I'm doing the same as well. I've mucked extensively with hardware especially fans and killing/dissecting a lot of them in the process as well.2C is huge..and there's no way there that much difference from a hundred rpm or so. Though I'm not familiar with your board but in all likelihood, you've must've had thermal monitoring and/or power management enabled hence the fan's being purposely slowed down for quietness purpose until a certain threshold is breached. Try plugging the cpu fan into another header like the chipset fan header or the casing fan header (or if you know which one that's not thermal monitored) and let us know. Edit: Is your QFAN control enabled? This post has been edited by sniper on the roof: Jun 28 2006, 09:18 PM |
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Jun 28 2006, 09:45 PM
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All Stars
14,909 posts Joined: Jul 2005
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Qfan?
Turned off... |
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Jun 28 2006, 09:59 PM
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VIP
23,414 posts Joined: Jan 2003 From: Taipei
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What about Asus probe?
Software Cooling setup and smart fan control? |
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Jun 28 2006, 10:15 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(sniper on the roof @ Jun 28 2006, 09:59 PM) What about Asus probe? Umm...Software Cooling setup and smart fan control? No also... By the way, i've read my processor temperature with using a PC Wizard... |
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Jun 28 2006, 11:04 PM
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VIP
23,414 posts Joined: Jan 2003 From: Taipei
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Just wanna clarify.. ur siggy says ur using a Hyper 6+ with the 4pin connector. How come the pics are using standard 3pin females?
Also found the reason why there such a big temp difference. Ur 100mm Hyper6 fan is pwm controlled (4pin) so when plugged directly into the mobo header, it'll just run at it slowest speed at 1800rpm And you could short them to run them full speed at 3600rpm. http://www.coolermaster.com/index.php?LT=e..._ID=RR-UNH-P0U1 This post has been edited by sniper on the roof: Jun 28 2006, 11:05 PM |
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Jun 28 2006, 11:07 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(sniper on the roof @ Jun 28 2006, 11:04 PM) Just wanna clarify.. ur siggy says ur using a Hyper 6+ with the 4pin connector. How come the pics are using standard 3pin females? Hahaha...Also found the reason why there such a big temp difference. Ur 100mm Hyper6 fan is pwm controlled (4pin) so when plugged directly into the mobo header, it'll just run at it slowest speed at 1800rpm And you could short them to run them full speed at 3600rpm. http://www.coolermaster.com/index.php?LT=e..._ID=RR-UNH-P0U1 Yes, i'm using a hyper 6+... But that doesn't mean i only have one heatsink lying in my room... I have a lot of intel 478 heatsink... The one i'm using for this thread is an ACER OEM heatsink for my oldskool 3.0D processor... |
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Jun 28 2006, 11:18 PM
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VIP
23,414 posts Joined: Jan 2003 From: Taipei
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QUOTE(sHawTY @ Jun 28 2006, 11:07 PM) Hahaha... Ok..my last post in this thread ok. Again, my purpose is just to clarify things. Yes, i'm using a hyper 6+... But that doesn't mean i only have one heatsink lying in my room... I have a lot of intel 478 heatsink... The one i'm using for this thread is an ACER OEM heatsink for my oldskool 3.0D processor...  - My guess is that ur 2C difference is because of the Hyper6+'s 4pin pwm peculiarities which was stated in coolermaster's website. - All the motherboard headers when running without any software intervention outputs 11.XX V which is close enough to 12V. Hence the fan run's at most 10% slower than rated speed. Finally, would be great if everyone could give it a shot and report in on the findings. That'll be cool. Cheers.. |
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Jun 28 2006, 11:24 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(sniper on the roof @ Jun 28 2006, 11:18 PM) Ok..my last post in this thread ok. Again, my purpose is just to clarify things. Hey sniper, seems like we're two were the only active in this thread... - My guess is that ur 2C difference is because of the Hyper6+'s 4pin pwm peculiarities which was stated in coolermaster's website. - All the motherboard headers when running without any software intervention outputs 11.XX V which is close enough to 12V. Hence the fan run's at most 10% slower than rated speed. Finally, would be great if everyone could give it a shot and report in on the findings. That'll be cool. Cheers.. |
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Jun 28 2006, 11:27 PM
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Moderator
9,277 posts Joined: Jan 2005 From: KL. Best place in Malaysia. Nuff said 
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I still remember a fan that my roomate bought. a 10000 RPM Cooler Master I think. Imported. We tested it by pluggin it in and putting it on the floar. It floats........
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Jun 28 2006, 11:40 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(linkinstreet @ Jun 28 2006, 11:27 PM) I still remember a fan that my roomate bought. a 10000 RPM Cooler Master I think. Imported. We tested it by pluggin it in and putting it on the floar. It floats........ 10000RPM???What the heck? Where did you find that fan? |
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Jun 28 2006, 11:52 PM
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Senior Member
5,464 posts Joined: Mar 2005
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i know sunon and deltas can reach such speed but most of them are either 80mm or smaller fans.
copper heat sinks are generally suck more heat out of the processors faster than alu hs. so generally the faster they are better heat conductors. alu is more on the downside but alu can be ultilized as passive cooling. thats the plus side. threadstarter can also draw out a switch diagram to switch between highspeed and low speed. |
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Jun 29 2006, 09:11 AM
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Senior Member
4,561 posts Joined: Jan 2003 From: Penangites
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QUOTE(sHawTY @ Jun 28 2006, 11:40 PM) 10000RPM??? it's pretty normal for mini fan like 40m ones to have that kind of speed.What the heck? Where did you find that fan? coz they are used in 1U servers and they must have super pressure..... last time i sold the ones that runs at 13,500rpm. just imagine 40mm fan can give 23.5cfm. 40mm give output of 80mm fan, so the rpm must be damn fast QUOTE(Vervain @ Jun 28 2006, 11:52 PM) i know sunon and deltas can reach such speed but most of them are either 80mm or smaller fans. i will send out your screws todaycopper heat sinks are generally suck more heat out of the processors faster than alu hs. so generally the faster they are better heat conductors. alu is more on the downside but alu can be ultilized as passive cooling. thats the plus side. threadstarter can also draw out a switch diagram to switch between highspeed and low speed. |
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Jun 29 2006, 10:04 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(AllnGap @ Jun 29 2006, 09:11 AM) it's pretty normal for mini fan like 40m ones to have that kind of speed. ........ coz they are used in 1U servers and they must have super pressure..... last time i sold the ones that runs at 13,500rpm. just imagine 40mm fan can give 23.5cfm. 40mm give output of 80mm fan, so the rpm must be damn fast |
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Jun 29 2006, 11:37 AM
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Senior Member
2,851 posts Joined: Jun 2006
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QUOTE(linkinstreet @ Jun 28 2006, 11:27 PM) I still remember a fan that my roomate bought. a 10000 RPM Cooler Master I think. Imported. We tested it by pluggin it in and putting it on the floar. It floats........ That is so cool man imagine you got LEDs on that, you could house it in transparent case and show ur frens Shawty: Thanks for the fan tip, made me reconsider buying a CM Musketeer (of course thats not the only reason i want one...) |
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Jun 29 2006, 01:23 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(vey99 @ Jun 29 2006, 11:37 AM) That is so cool man imagine you got LEDs on that, you could house it in transparent case and show ur frens ??? Shawty: Thanks for the fan tip, made me reconsider buying a CM Musketeer (of course thats not the only reason i want one...) If you're going to buy a musketeer, go to ALLIT hypermarket at Lowyatt plaza... That's the shop which offers the lowest price for a CM Musketeer... |
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Jul 15 2006, 12:15 AM
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All Stars
14,909 posts Joined: Jul 2005
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Ehh?
No one interested on this thread anymore? Or does everyone see this thread as unuseful? |
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Jul 15 2006, 01:03 AM
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All Stars
10,530 posts Joined: Nov 2004 From: Petaling Jaya & Mid Valley
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psst psst.... just itchy wanna add
12v-5v SWITCH <- i did this for the fans in my case 12v-7v SWITCH now can have high or low speed at a flip of a switch... no need open up casing and put the wire here or there bla bla bla as for 13.5k rpm fan that allngap mentioned...i actually bought one of those from him... 40mm sunon screamers... serious bad ass fans. tried using it for my NB heatsink but it ended up vibrating my entire case |
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Jul 15 2006, 01:47 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(mADmAN @ Jul 15 2006, 01:03 AM) psst psst.... just itchy wanna add Nice bro...12v-5v SWITCH <- i did this for the fans in my case 12v-7v SWITCH now can have high or low speed at a flip of a switch... no need open up casing and put the wire here or there bla bla bla as for 13.5k rpm fan that allngap mentioned...i actually bought one of those from him... 40mm sunon screamers... serious bad ass fans. tried using it for my NB heatsink but it ended up vibrating my entire case U make me think of doing it also... For my hyper 6+ offcourse... [That heatsink fan doesn't come with a fan speed regulator ] |
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Jul 15 2006, 04:55 PM
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All Stars
10,530 posts Joined: Nov 2004 From: Petaling Jaya & Mid Valley
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i say go for it man... do it....it seriously makes life hell of alot easier if u wanna have silent + performance coz u can choose either 1 at a flick of a switch
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Jul 15 2006, 04:58 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(mADmAN @ Jul 15 2006, 04:55 PM) i say go for it man... do it....it seriously makes life hell of alot easier if u wanna have silent + performance coz u can choose either 1 at a flick of a switch I will...I will... Waiting for tomorrow, i will go to giant and search for some mini switch... |
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Jul 15 2006, 06:18 PM
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Junior Member
480 posts Joined: Jan 2003 From: Cheras, Kuala Lumpur
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This trick will not work if the fan got a built in temp sensor.
Want to make your fan spin faster.....splice the -5V from your psu and connect the negative wire from your fan to that -5V line. Bam!!! your fan runs at +17V......  » Click to show Spoiler - click again to hide... « This post has been edited by Shah81: Jul 15 2006, 06:21 PM |
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Jul 15 2006, 06:23 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(Shah81 @ Jul 15 2006, 06:18 PM) This trick will not work if the fan got a built in temp sensor. Ngiahaha...Want to make your fan spin faster.....splice the -5V from your psu and connect the negative wire from your fan to that -5V line. Bam!!! your fan runs at +17V...... » Click to show Spoiler - click again to hide... « You're funny man... Offcourse the fan would die... Tried that setting before liao... 2 off my fans already died... |
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Jul 15 2006, 06:27 PM
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All Stars
10,530 posts Joined: Nov 2004 From: Petaling Jaya & Mid Valley
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wait a minute.... do 24pins psu still have the -5v wire if it doesnt have the -5 rail???
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Jul 15 2006, 06:29 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(mADmAN @ Jul 15 2006, 06:27 PM) wait a minute.... do 24pins psu still have the -5v wire if it doesnt have the -5 rail??? Don't ask me about that...I know nothing about electricity... Muahaha This post has been edited by sHawTY: Jul 15 2006, 06:29 PM |
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Jul 19 2006, 11:24 AM
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Junior Member
10 posts Joined: Jul 2006 From: KL
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anyone tested with it oledi? i wanna try but..scared my fan will 'blow'...lol
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Jul 19 2006, 12:00 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(gaarasama @ Jul 19 2006, 11:24 AM) anyone tested with it oledi? i wanna try but..scared my fan will 'blow'...lol Offcourse the fan will blow as it exceeds the stock 12V voltage... |
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Jul 19 2006, 09:56 PM
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Junior Member
364 posts Joined: Mar 2006 From: Penang - Butterworth
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Actually it's just switching either 12v or 5v for case fan.
not much help on raising up the fan speed (RPM), but when your set to 5v will slightly slow down the RPM of the fan. that day i saw a molex converter, output is (3pins 12v x 2) + (3pins 5v x 2). i mean 1 molex to 4 case fan output. function is let us choose the high speed 12v or low speed 5v power supply. |
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Jul 19 2006, 10:32 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(SkyDriver @ Jul 19 2006, 09:56 PM) Actually it's just switching either 12v or 5v for case fan. I know which one u're talking about...not much help on raising up the fan speed (RPM), but when your set to 5v will slightly slow down the RPM of the fan. that day i saw a molex converter, output is (3pins 12v x 2) + (3pins 5v x 2). i mean 1 molex to 4 case fan output. function is let us choose the high speed 12v or low speed 5v power supply. I have it in my hand... But never used it... |
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Jul 20 2006, 12:28 AM
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All Stars
10,530 posts Joined: Nov 2004 From: Petaling Jaya & Mid Valley
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QUOTE(SkyDriver @ Jul 19 2006, 09:56 PM) Actually it's just switching either 12v or 5v for case fan. you guys talking about this right?? not much help on raising up the fan speed (RPM), but when your set to 5v will slightly slow down the RPM of the fan. that day i saw a molex converter, output is (3pins 12v x 2) + (3pins 5v x 2). i mean 1 molex to 4 case fan output. function is let us choose the high speed 12v or low speed 5v power supply.  my suggestion is to cut and use it to make the 12v/5v switch so that u can straight plug in ur fan into the headers without cutting the fan wires. i myself bought quite a few for this purpose... and i use it for my switch. so i dont need to cut my fan wires. and i can remove/ change my fans anytime i want. with the 12v/5v switch u can easily lower down ur fan speed without opening up ur case. u can use the 3pin connectors for the fan....and of course u can also reuse the male molex right now u can get them in the bulk section HERE (same guy i got mine from - can be trusted )@SkyDriver setting it at 5v wont 'slightly' lower down the rpm...itll actually reduce it quite abit... imagine my 120mm delta ffb screamer can go to a bearable silent with 5v  @sHawTY done the switch yet? use the multi connector like i said above if u gonna do it man and remember to post a step by step pic of how to do it here This post has been edited by mADmAN: Jul 20 2006, 12:29 AM |
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Jul 20 2006, 12:35 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(mADmAN @ Jul 20 2006, 12:28 AM) @sHawTY Didn't even start yet...done the switch yet? use the multi connector like i said above if u gonna do it man and remember to post a step by step pic of how to do it here Dunno where to start... I'm not free yet this days... Maybe later on will start doing that... Thanks Sifu!! |
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Jul 20 2006, 12:49 AM
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Junior Member
364 posts Joined: Mar 2006 From: Penang - Butterworth
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 here... lol |
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Jul 20 2006, 12:51 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(SkyDriver @ Jul 20 2006, 12:49 AM) here... lol What's the point you're putting it here too? Madman already put the same thing here... Wait... Don't tell me you're spamming? |
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Jul 20 2006, 11:58 PM
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Junior Member
364 posts Joined: Mar 2006 From: Penang - Butterworth
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just showing your way cant make the fan to reach the highest speed, since using 12v power already running at highest speed! totally no different after modified from 3 pin to molex.
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Jul 21 2006, 12:07 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(SkyDriver @ Jul 20 2006, 11:58 PM) just showing your way cant make the fan to reach the highest speed, since using 12v power already running at highest speed! totally no different after modified from 3 pin to molex. Huh?It's different maa... My way is to make the fan turn at the maximum speed all the time... If using with the motherboard, sometime the motherboard slows down the fan speed... |
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Jul 21 2006, 12:12 AM
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Senior Member
1,526 posts Joined: Jan 2006 From: Between Those Legs Position : Missionary
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i agree with Shawty,
the mobo does slow down the fan sometimes, in my case , when i run the application ABIT EQ, u can automatically hear, ur fans ( fans connected to mobo 3 pin ) slowing down. |
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Jul 21 2006, 12:13 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(zahri @ Jul 21 2006, 12:12 AM) i agree with Shawty, Yes...the mobo does slow down the fan sometimes, in my case , when i run the application ABIT EQ, u can automatically hear, ur fans ( fans connected to mobo 3 pin ) slowing down. That's what i'm talking about... If the motherboard senses the processor is cooler, it will slow down the fan... It will only let the fan turns at the maximum speed when the processor temperature is rising... |
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Jul 21 2006, 12:24 AM
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Senior Member
1,526 posts Joined: Jan 2006 From: Between Those Legs Position : Missionary
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yup, cud not agree with u more bro...
this is what i call a direct connection, ( just like some people who likes their car radiator to run all the time (direct) , to get cooler water temperature, instead of automatically controlled which is triggered with a sensor) In this case, ur processor, stays cool all the time |
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Jul 21 2006, 12:24 AM
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Junior Member
364 posts Joined: Mar 2006 From: Penang - Butterworth
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QUOTE(sHawTY @ Jul 21 2006, 12:07 AM) Huh? that's another story (motherboard temp control system) It's different maa... My way is to make the fan turn at the maximum speed all the time... If using with the motherboard, sometime the motherboard slows down the fan speed... |
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Jul 21 2006, 12:29 AM
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All Stars
10,530 posts Joined: Nov 2004 From: Petaling Jaya & Mid Valley
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cant u just disable the fan control in the bios?? or set the temp setting to lower if u wan it to run full speed....
most mobos should be able to....even my cheapo MSI mobo in the office can do it... |
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Jul 21 2006, 12:38 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(mADmAN @ Jul 21 2006, 12:29 AM) cant u just disable the fan control in the bios?? or set the temp setting to lower if u wan it to run full speed.... Most mobos...most mobos should be able to....even my cheapo MSI mobo in the office can do it... But not all... A lot of old motherboard didn't have the option... |
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Jul 21 2006, 12:40 AM
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Junior Member
364 posts Joined: Mar 2006 From: Penang - Butterworth
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old mainboard normally dont have temp control system... lol
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Jul 21 2006, 12:59 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(SkyDriver @ Jul 21 2006, 12:40 AM) old mainboard normally dont have temp control system... lol Wahh...U spam a lot meh? Wakaka... Don't be like that laa.. Later on you'll be warned by the moderators... |
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Jul 21 2006, 01:17 AM
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Junior Member
364 posts Joined: Mar 2006 From: Penang - Butterworth
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QUOTE(sHawTY @ Jul 21 2006, 12:59 AM) Wahh... just pointing your tips is not that useful... i mean no senseU spam a lot meh? Wakaka... Don't be like that laa.. Later on you'll be warned by the moderators... or maybe just discussing here, i dont think my post consider as spamming! example of spam just like what i quoted! (up there) ok? just focus or answer my post if you want to quote my post! and stop saying i'm spamming here, that should be a real spam if you reply like that. lol sorry, back to topic... on board system fan will control the fan speed (RPM) just in small gap like 2500RPM - 2900RPM... we can disable it, if some mainboard not able to disble it, i think the board should have no fan speed control system. beside the system fan, some of the mainboard providing 'power fan'. running the max speed all the time. for my example, i'm using CM 80mm case fan. plug to system fan - 2909RPM plug to casing fan1 or fan2 - 2900RPM ps : casing is pwrlogic artix. |
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Jul 21 2006, 07:44 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(SkyDriver @ Jul 21 2006, 01:17 AM) on board system fan will control the fan speed (RPM) just in small gap like 2500RPM - 2900RPM... we can disable it, if some mainboard not able to disble it, i think the board should have no fan speed control system. That's why i said earlier...beside the system fan, some of the mainboard providing 'power fan'. running the max speed all the time. for my example, i'm using CM 80mm case fan. plug to system fan - 2909RPM plug to casing fan1 or fan2 - 2900RPM Any fan controllers will limit the fan maximum speed... In your case, maybe your motherboard reader is kinda sewel... The fan should not be turning at excessive speed than the speed it was set by the manufacturer, this means that your motherboard is giving extra voltage that could kill your fan... The connection to direct to power supply is to make the fan turns at the maximum speed set by the manufacturer of the fan itself... |
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Jul 21 2006, 07:51 AM
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Senior Member
2,660 posts Joined: Jan 2003 From: Somewhere in the world
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If the damm fan spins at max speed all the time then it will be noisy
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Jul 21 2006, 07:52 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(alextan99 @ Jul 21 2006, 07:51 AM) If the damm fan spins at max speed all the time then it will be noisy Not 100% true...There are those silence fans... Those fans are made for it's silence... That kind of fans are already slow... Use the motherboard connector, then it will make the fan go slower... This is why i built this topic... |
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Jul 21 2006, 08:48 AM
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Senior Member
6,744 posts Joined: Jan 2003 From: World Wide Web Status: Banned
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QUOTE(AllnGap @ Jun 27 2006, 10:04 PM) if i wanted to make articles like this, i think i'm gonna take up a lot of space...... He's sharing something that he thinks usefull to others. AllnGap, any more new crazy mods of yours ? bro, you still got a long way to go |
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Jul 21 2006, 11:17 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(uzairi @ Jul 21 2006, 08:48 AM) He's sharing something that he thinks usefull to others. AllnGap, any more new crazy mods of yours ? Hehe...If allngap were to share new crazy mods, he will not post it here... Here will post it in his topics...  |
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Jul 22 2006, 12:40 AM
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Senior Member
1,526 posts Joined: Jan 2006 From: Between Those Legs Position : Missionary
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QUOTE(alextan99 @ Jul 21 2006, 07:51 AM) If the damm fan spins at max speed all the time then it will be noisy or u can use a fan controller to control the speed of the fan manually... like shawty said, if ur fan is silent, then u can put it on full speed without worrying about noise and temp problems. |
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Jul 22 2006, 12:37 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(zahri @ Jul 22 2006, 12:40 AM) or u can use a fan controller to control the speed of the fan manually... Yerp... like shawty said, if ur fan is silent, then u can put it on full speed without worrying about noise and temp problems. That's what i'm talkin' bout.... |
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Aug 10 2006, 09:31 AM
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All Stars
14,909 posts Joined: Jul 2005
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Err...
No one interested in my topic anymore?  Well... What the heck... I'll just keep it alive... |
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Aug 14 2006, 03:08 AM
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Senior Member
1,701 posts Joined: Jul 2006 From: Malaysia
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haha..tried connecting the black n red to the white power thingy...speed seems same
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Aug 14 2006, 04:21 PM
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Staff
1,368 posts Joined: Nov 2004 From: A' Ghà idhealtachd
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^^ got pictures?
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Aug 15 2006, 06:09 PM
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All Stars
14,909 posts Joined: Jul 2005
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Pictures of what?
I think i've already shown everything on the first page... |
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Aug 16 2006, 11:42 PM
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Junior Member
12 posts Joined: May 2006
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hey you have tip for fan use 4 pin like cm 92mm for hyper 48.its rotate at lowest speed if i plug on 3 pin port.you know how to get full speed.
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Aug 17 2006, 01:17 AM
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All Stars
14,909 posts Joined: Jul 2005
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Yerp...
I don't have the exact picture... But this link will help u... It's originally from Cooler Master Website... Make it like this:  Anymore question, just ask here, i will try to help u as far as i can... |
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Aug 17 2006, 01:33 AM
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Senior Member
887 posts Joined: May 2005 From: Blackwater, Deepcar
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QUOTE(sHawTY @ Aug 17 2006, 01:17 AM) Yerp... I want to slow down a Prescott stock HSink fan via a variable resistor with cct board, you have a guide on that?Anymore question, just ask here, i will try to help u as far as i can... |
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Aug 17 2006, 10:23 AM
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Junior Member
9 posts Joined: Mar 2006
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QUOTE(sHawTY @ Jun 27 2006, 01:29 PM) Ahahaha... i think "Variable fan speed controller" was same as volume controler like the normal radio used one... ur modded just like Cooler Master HSF connection...The problem is, i didn't even know how to make that so called "Variable fan speed controller" Maybe i'll ask my brother to built one and later on will post it in this thread on how to do it... Or should i copyright it so no one could steal our design? Muahahaha... Just kidding... i'll ask him to do it later on... |
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Aug 17 2006, 05:12 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(spacepilot @ Aug 17 2006, 01:33 AM) I want to slow down a Prescott stock HSink fan via a variable resistor with cct board, you have a guide on that? Nope, i don't have it...I'm not an electronic engineer... However, you could ask some forumer here on how to do it... |
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Aug 18 2006, 12:27 PM
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Staff
1,368 posts Joined: Nov 2004 From: A' Ghà idhealtachd
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QUOTE(sHawTY @ Aug 15 2006, 06:09 PM) Pictures of what? Im not saying you...Im asking 'dj.eRicZzz' for pics coz maybe we can help him.. I think i've already shown everything on the first page... |
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Aug 18 2006, 12:28 PM
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Staff
1,368 posts Joined: Nov 2004 From: A' Ghà idhealtachd
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QUOTE(sHawTY @ Aug 17 2006, 01:17 AM) Yerp... This is to make it faster or slower?I don't have the exact picture... But this link will help u... It's originally from Cooler Master Website... Make it like this: Anymore question, just ask here, i will try to help u as far as i can... |
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Aug 18 2006, 12:29 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(max_cjs0101 @ Aug 18 2006, 12:28 PM) This is to make it faster or slower? Faster laaa... That method is used for those people who's using Fans that comes with 4 PIN PWM but using it on 3 pins motherboard header... |
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Aug 18 2006, 03:22 PM
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Junior Member
12 posts Joined: May 2006
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QUOTE(sHawTY @ Aug 17 2006, 01:17 AM) Yerp... i have done do it.wah so noisy.it get to full speed.but have massive air flow.I don't have the exact picture... But this link will help u... It's originally from Cooler Master Website... Make it like this: Anymore question, just ask here, i will try to help u as far as i can... hey can i put the fan controller on my fan for slow down the rpm. |
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Aug 18 2006, 04:07 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(cedilmill @ Aug 18 2006, 03:22 PM) i have done do it.wah so noisy.it get to full speed.but have massive air flow. Good for you...hey can i put the fan controller on my fan for slow down the rpm. And, yes... The airflow is massive... Just like my Hyper 6+ fan with setting on the maximum speed... My hyper 6+ 100MM fan is 46.6DBa when on maximum speed... About your question on the fan controller, i don't know about that... Why don't u go ask "allngap" maybe he has the right answer for you... |
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Aug 19 2006, 07:07 PM
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Staff
1,368 posts Joined: Nov 2004 From: A' Ghà idhealtachd
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QUOTE(sHawTY @ Aug 18 2006, 12:29 PM) Faster laaa... Oh..was confused...thanks.. That method is used for those people who's using Fans that comes with 4 PIN PWM but using it on 3 pins motherboard header... |
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Aug 19 2006, 07:30 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(max_cjs0101 @ Aug 19 2006, 07:07 PM) Oh..was confused...thanks.. No problem...  |
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Sep 3 2006, 12:32 AM
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All Stars
14,909 posts Joined: Jul 2005
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Bro "Sniper On The Roof"
Help me please...  |
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Sep 22 2006, 12:01 PM
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All Stars
14,909 posts Joined: Jul 2005
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Ehh?
No one interested in this topic aa? |
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Sep 24 2006, 01:35 AM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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QUOTE(spacepilot @ Aug 17 2006, 01:33 AM) I want to slow down a Prescott stock HSink fan via a variable resistor with cct board, you have a guide on that? You can use a variable resistor from the hardware shop (abt RM1), though you'll have to solder the wires to it. Just connect the wires to the centre and one of the side pins-which pin you connect to will affect which direction you have to turn to adjust the fan. Will try out first which resistance is suitable, if you want to try (and not blow your system) I suggest the steps below1. Before you try this on your proc main fan, try it on one of your spare fans connected to a 3pin/4pin connector on the motherboard (chassis or power fan connector). 2. Cut the +12V wire on the fan connector, connect one end to the centre pin of the var. resistor. Using the black one might also work, but could potentially mess up the fan speed signal (yellow) & speed control (4th wire in 4-pin connector). 3. Connect the other end of the cut wire to one of the side pins of the var. resistor, set the resistor to the centre. 4. Start up the PC & adjust the fan controller from min to max. If the direction is wrong, then shut down & reconnect the wire to the other side. What will most probably happen (haven't tried on a fan, but tried on a lamp) -if resistance is too high, fan won't spin at all except when set to almost max. -if the resistance is too low, you won't be able to noticably control the fan (not much difference in speed even when you adjust the resistor. -worst case, the variable resistor will overheat and blow (for high power fans). 1 out of 2 things could happen, neither is very serious-short through the resistor & fan spins at max speed only (less common) OR resistor contact blows & fan stops (more common) Anything I miss, pls correct me Planning to build a suite of fan controllers for my rig, will experiment with variable resistors, then try transistors & PWM. |
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Sep 24 2006, 02:02 AM
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All Stars
10,530 posts Joined: Nov 2004 From: Petaling Jaya & Mid Valley
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QUOTE(lohwenli @ Sep 24 2006, 01:35 AM) -worst case, the variable resistor will overheat and blow (for high power fans). 1 out of 2 things could happen, neither is very serious-short through the resistor & fan spins at max speed only (less common) OR resistor contact blows & fan stops (more common) this is sumthin like what happened when i tried it with a Delta FFB1212EHE (3.0A Fan). the VR started smoking man!!! im guessing doing this without a proper board with other stuff (dunno exactly what) on them is not ideal unless its a low powered fan (im guessing sumthin below 1.0A??) high powered ur definitely gonna be needing those circuit boards. although 1 thing to check is to make sure ur fan can run (AND start) at low voltages.... mebbe a minimum of 5v. coz if ur building a fan controller with the VRs ull be adjusting the voltage being fed to the fan...and too low ur fan will just end up stopping if it cant run at low voltages. but if ur building a PWM controller than no need to worry about the low voltage thingy as a PWM will be sending out 12v on pulses.. and ur just controlling the frequency of the pulses. EDIT: forgot to mention that i made a switch instead of using VRs to control my fan speed...but all ull get is hi-low speed.... 12v-5v SWITCH <- i did this for the fans (ALL fans including my Deltas) in my case 12v-7v SWITCH This post has been edited by mADmAN: Sep 24 2006, 02:04 AM |
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Sep 25 2006, 05:54 PM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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QUOTE(mADmAN @ Sep 24 2006, 02:02 AM) this is sumthin like what happened when i tried it with a Delta FFB1212EHE (3.0A Fan). the VR started smoking man!!! im guessing doing this without a proper board with other stuff (dunno exactly what) on them is not ideal unless its a low powered fan (im guessing sumthin below 1.0A??) high powered ur definitely gonna be needing those circuit boards. although 1 thing to check is to make sure ur fan can run (AND start) at low voltages.... mebbe a minimum of 5v. coz if ur building a fan controller with the VRs ull be adjusting the voltage being fed to the fan...and too low ur fan will just end up stopping if it cant run at low voltages. but if ur building a PWM controller than no need to worry about the low voltage thingy as a PWM will be sending out 12v on pulses.. and ur just controlling the frequency of the pulses.  Look in your PSU if you don't believe me-those are costly, EFFICIENT transistors-power MOSFETs to be precise, and they still need heatsinks (though they handle like 20x more current than the cheap transistors we get at the electronics shop).Most resistors can handle 1W output across the resistor, VRs are notably lower. Quick estimate calulation-5V on fan means 7V taken over on resistor..whole circuit probably pulls 0.5A when fan is spinning slowly at 5V..comes to about 3-4W on the VR-sizzle .... VRs probably only suitable for fans drawing well below 1A when at full speed, at 5V probably only 0.1W so VR can probably take it. No way to know till try it out..guess have to redouble efforts to design & build transistor (<1A) or PWM switching (1-3A) controllers..sigh..thought it would work..didn't have time to do the calulations earlier..forgot that most of the noisy fans needing fan controllers pull 1A++..edit: Oh btw, I've heard that fans can still not spin if PWM is set to too low a speed. Fan just vibrates in place...pulse not long enough to give power to turn.. This post has been edited by lohwenli: Sep 25 2006, 06:07 PM |
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Sep 27 2006, 09:14 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(lohwenli @ Sep 25 2006, 05:54 PM) 3A is crazy for a VR..even 1A is tough for cheap transistor circuits, even then they need heatsinks Damn you're pro in this... Look in your PSU if you don't believe me-those are costly, EFFICIENT transistors-power MOSFETs to be precise, and they still need heatsinks (though they handle like 20x more current than the cheap transistors we get at the electronics shop).Most resistors can handle 1W output across the resistor, VRs are notably lower. Quick estimate calulation-5V on fan means 7V taken over on resistor..whole circuit probably pulls 0.5A when fan is spinning slowly at 5V..comes to about 3-4W on the VR-sizzle .... VRs probably only suitable for fans drawing well below 1A when at full speed, at 5V probably only 0.1W so VR can probably take it. No way to know till try it out..guess have to redouble efforts to design & build transistor (<1A) or PWM switching (1-3A) controllers..sigh..thought it would work..didn't have time to do the calulations earlier..forgot that most of the noisy fans needing fan controllers pull 1A++..edit: Oh btw, I've heard that fans can still not spin if PWM is set to too low a speed. Fan just vibrates in place...pulse not long enough to give power to turn.. ***Can help me build a PWM voltage controller for my Nidec Beta 5 fan? |
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Sep 29 2006, 03:47 PM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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QUOTE(sHawTY @ Sep 27 2006, 09:14 PM) Damn you're pro in this... No le...just happen to be studying electronics as part of my physics course..also like to mess around. Anyway I'll try building it first, then I'll get back and give my results..dunno where to find time to do it also..exams coming soon ***Can help me build a PWM voltage controller for my Nidec Beta 5 fan? . Basically need an adjustable timing circuit (can rig a 555 circuit 4 a few ringgit) to give pulses to switching MOSFET or JFET which will act as an electrially controlled power switch turing on and off hundreds/thousands of times per second (FET-field effect transistors, sounds cool, but they're still just basic transistors, not some fancy energy thingy). The longer the switch is closed compared to when its open, the faster the fan will spin. Have parts for the timing circuit already, will try these few days when free, but need to do research on FETs (gotta dig up them datasheets-sigh, easy to find low Amp mosfet, but tough to pick good ones) before I rig one to the timing circuit. |
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Sep 30 2006, 03:41 AM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(lohwenli @ Sep 29 2006, 03:47 PM) No le...just happen to be studying electronics as part of my physics course..also like to mess around. Anyway I'll try building it first, then I'll get back and give my results..dunno where to find time to do it also..exams coming soon I don't even understand even a word you're saying here... . Basically need an adjustable timing circuit (can rig a 555 circuit 4 a few ringgit) to give pulses to switching MOSFET or JFET which will act as an electrially controlled power switch turing on and off hundreds/thousands of times per second (FET-field effect transistors, sounds cool, but they're still just basic transistors, not some fancy energy thingy). The longer the switch is closed compared to when its open, the faster the fan will spin. Have parts for the timing circuit already, will try these few days when free, but need to do research on FETs (gotta dig up them datasheets-sigh, easy to find low Amp mosfet, but tough to pick good ones) before I rig one to the timing circuit. But, what the heck, i'll just wait for the results of the incoming PWM fan controller then...  |
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Sep 30 2006, 04:33 AM
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All Stars
10,530 posts Joined: Nov 2004 From: Petaling Jaya & Mid Valley
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QUOTE(sHawTY @ Sep 30 2006, 03:41 AM) I don't even understand even a word you're saying here... agreed... But, what the heck, i'll just wait for the results of the incoming PWM fan controller then... too technical already.... halfway thru ur paragraph i got so blur i could barely see the words anyway...concentrate on ur exams first... then later screw around with the controller. all the best with exams dude |
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Sep 30 2006, 08:23 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(mADmAN @ Sep 30 2006, 04:33 AM) agreed... Yerp, what lelaki gila says is right...too technical already.... halfway thru ur paragraph i got so blur i could barely see the words anyway...concentrate on ur exams first... then later screw around with the controller. all the best with exams dude Concentrate on you're studies first, then build a PWM fan controller for me later... Joking only... |
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Oct 3 2006, 01:07 AM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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Ok..I'll study first..but anyway I was digging through my old bookmarks, seems I don't have to design the circuit at all..
http://www.rmcybernetics.com/projects/DIY_..._controller.htm All the parts wil only come up to a few ringgit, only one I've never bought before is the power MOSFET, but I guess it won't really cost that much. Also has other interesting DIY project..tesla coils, pulse jets, ect.. DIY also means do-at-your-own-risk..some of those projects are not play play. Hmm, maybe after exams I should do a bulk on this? Sell PWM components/finished PWM units.. Going out of university for haircut tomorrow or so, can pick up components for a quick try on a prototyping board. Won't be able to install in my PC, but at least will have proof of concept. |
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Oct 3 2006, 07:04 AM
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All Stars
14,909 posts Joined: Jul 2005
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So...
So... Can you do it?  Can you do it? |
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Oct 4 2006, 08:56 AM
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Senior Member
6,633 posts Joined: Jan 2003 From: www.kelvinchiew.com
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where cna i get nice grills?? cause my fans are so naked now
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Oct 4 2006, 09:55 AM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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QUOTE(porkchop @ Oct 4 2006, 08:56 AM) where cna i get nice grills?? cause my fans are so naked now Try searching in the bulk/garage sales, quite a few people selling.However if you're in this thread because of the title, then I should warn you that putting cool looking fan grilles will usually obstruct airflow especially for high cfm fans. Also will make the fan even louder.. QUOTE(sHawTY @ Oct 3 2006, 07:04 AM) So... I'll give it a shot, probably this weekend I'll get back to you, hopefully end of this month I can figure out how to make enough to sell So... Can you do it? Can you do it? . Should be quite cheap, probably way below RM100 for a multi fan control. Thinking of a way to make system monitors also (rpm, temp, voltage), already know how to make the circuit, just a matter of trying out & improving the circuit for better accuracy. |
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Oct 4 2006, 12:45 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(lohwenli @ Oct 4 2006, 09:55 AM) I'll give it a shot, probably this weekend I'll get back to you, hopefully end of this month I can figure out how to make enough to sell Multi fan controller? . Should be quite cheap, probably way below RM100 for a multi fan control. Thinking of a way to make system monitors also (rpm, temp, voltage), already know how to make the circuit, just a matter of trying out & improving the circuit for better accuracy.I just want a fan controller to be used for one fan only... |
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Oct 4 2006, 02:34 PM
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Junior Member
442 posts Joined: Jan 2003 From: Segamat--Nilai
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lohwenli, i was wondering something...bout the VR controller, not the PWM controller.
Assuming we are using a low current dc fan..say <1.0A. We are able to put the potentiometer in series wif the load (fan), and by doing this,we can vary the current across the load and current through it. What if i want to control the current through the fan only, while maintaining the voltage across it? Will connecting the potentiometer in parallel with the load simply be able to do it? Edit: Did some calculations and found out that it cant be done..nvm then. This post has been edited by x800: Oct 4 2006, 08:40 PM |
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Oct 4 2006, 02:54 PM
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Senior Member
1,526 posts Joined: Jan 2006 From: Between Those Legs Position : Missionary
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QUOTE(lohwenli @ Oct 3 2006, 01:07 AM) Ok..I'll study first..but anyway I was digging through my old bookmarks, seems I don't have to design the circuit at all.. Not Bad... http://www.rmcybernetics.com/projects/DIY_..._controller.htm All the parts wil only come up to a few ringgit, only one I've never bought before is the power MOSFET, but I guess it won't really cost that much. Also has other interesting DIY project..tesla coils, pulse jets, ect.. DIY also means do-at-your-own-risk..some of those projects are not play play. Hmm, maybe after exams I should do a bulk on this? Sell PWM components/finished PWM units.. Going out of university for haircut tomorrow or so, can pick up components for a quick try on a prototyping board. Won't be able to install in my PC, but at least will have proof of concept. The Circuit is simple, but for a fan controller ... erm... maybe if u have a powerfull fan to control id say this is the circuit. i have built a few Fan controllers and so far this one is the one with the most components Will Give it a whack after i finish my assembling my current fan controller. Shawty, maybe i will try the fan controller on the nidec first and give u the feedback ya !!! |
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Oct 4 2006, 03:41 PM
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Junior Member
442 posts Joined: Jan 2003 From: Segamat--Nilai
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*deleted*
misunderstanding.. This post has been edited by x800: Oct 4 2006, 08:39 PM |
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Oct 4 2006, 08:38 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(x800 @ Oct 4 2006, 03:41 PM) lowenhi, i just did some calculations.found out that connecting the potentiometer in parallel with the load cant do the job..any other wat to do a fan controller which maintains the voltage but varies the current w/o using PWM? What the heck you guys are discussing here? I can't understand even a bit... |
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Oct 4 2006, 08:40 PM
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Junior Member
442 posts Joined: Jan 2003 From: Segamat--Nilai
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forget what i posted earlier shawty..i had a little misunderstanding of the concept..
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Oct 4 2006, 09:02 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(x800 @ Oct 4 2006, 08:40 PM) forget what i posted earlier shawty..i had a little misunderstanding of the concept.. Erk? Why did u delete that post? I didn't understand then let it be la... Just go on you guys discuss those things... I'll just wait for the final product leh... |
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Oct 4 2006, 09:32 PM
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Junior Member
442 posts Joined: Jan 2003 From: Segamat--Nilai
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i deleted it not bcoz of u leh..its bcoz i'll look silly if other knowledgable ppl read that..coz i wanted to make sumthing that is quite impossible w/o using PWM..
eh u oso delete ur quote lar.. |
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Oct 5 2006, 01:45 AM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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Hmm, let me recall..what happens when fans run is that as the fan spins faster there will be an increasing reverse voltage across it (back emf if you want to be technical), it will seem like a voltage drop across the fan but actually the voltage drop is very small, most of the 12V across the fan is made up by the reverse voltage rather than the voltage drop. When the fan is not spinning there is no reverse voltage and the fan actually has little resistance causing a big current to flow until the fan spins up and the reverse voltage causes current to drop (block a fan/motor from spinning for long enough & you'll see it smoking because of this). Rated current is for when the fan has reached its operation rpm.
Looks like I forgot to take that into account..if the initial current is too small because the total resistance of the fan & VR is too high, the fan won't start at all, and if the initial current is beyond the capability of the VR to handle because the fan & VR resistance is too low then well the VR is history. Means I'm still not too far off the mark, so to clear things I took out my prototype board and hooked up 4 of my fans (low power ~0.5A) to a 200 ohm VR in series..it WORKED! Managed to control fan voltage from 11.9V to 4V, so can still be used for the lower power fans, but higher power fans would have no choice but to use PWM (the VR did get a wee bit warm even on 0.5A). Oh btw sHawTY, the circuit only looks complicated, but can easily fit into a matchbox. I should be able to build a few prototypes in a week or 2 after my tests these few weeks, sell you the first 1 cheap . What's left is to try out the design first, but I have no doubt there should be not much problems getting it to work. Later I can give multi fan controllers & sensors a shot.QUOTE(x800 @ Oct 4 2006, 02:34 PM) lohwenli, i was wondering something...bout the VR controller, not the PWM controller. VR in parallel? Now that would be a really quick way to roast a VR..turn to minimum, 0.1 ohm, get 120A current on 12V Assuming we are using a low current dc fan..say <1.0A. We are able to put the potentiometer in series wif the load (fan), and by doing this,we can vary the current across the load and current through it. What if i want to control the current through the fan only, while maintaining the voltage across it? Will connecting the potentiometer in parallel with the load simply be able to do it? Edit: Did some calculations and found out that it cant be done..nvm then. equals 1440W output..if your psu doesn't blow, congrats..pls recommend the brand to the rest of us.. |
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Oct 5 2006, 07:23 AM
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Junior Member
442 posts Joined: Jan 2003 From: Segamat--Nilai
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yeah, realised that already.and btw, thx for the info bout the reverse voltage thingy.u reminded me what my lecturer taught me last sem
This post has been edited by x800: Oct 5 2006, 05:53 PM |
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Oct 5 2006, 09:48 PM
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Senior Member
1,486 posts Joined: Jun 2005 From: Cyberjaya/Kamunting
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hey..how about my CM XDream III???
any idea how to increase the speed from 2k to 6k??? i dont care the noise anymore.. my case is sound proof » Click to show Spoiler - click again to hide... « This post has been edited by xen0: Oct 5 2006, 09:49 PM |
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Oct 5 2006, 09:58 PM
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Senior Member
3,951 posts Joined: Jan 2003 From: BS161ZL, Bristol 
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QUOTE(sniper on the roof @ Jun 20 2006, 06:37 PM) Actually I don't really know what's the purpose of this also.... I don't want my fan to run full speed.....I wanna run fanless if I can. there's always the delta tornado killers which spins at 6000rpm, and creating hell lot of a noise, but great cfm!For everthing else....there's always tornadoes and focus flows. |
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Oct 5 2006, 09:58 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(xen0 @ Oct 5 2006, 09:48 PM) hey..how about my CM XDream III??? Change the fan to Delta Focusflow... any idea how to increase the speed from 2k to 6k??? i dont care the noise anymore.. my case is sound proof » Click to show Spoiler - click again to hide... « |
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Oct 5 2006, 10:57 PM
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Senior Member
854 posts Joined: Jun 2005 From: N9
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i did this mod also. and it works.
bit i suggest that u connect the fan not directly to the psu, but to a male molex, then u plug it to the female molex from the PSU. and for the variable fan controller, just add a variable resistor. if you want you can also add transistor and capacitors, but that one i really dunno how to design the circuit. dun ask me for smart fan, i dunno how to do it... lolz (erm.... if u leave the fan as it is and dun mod it, the mobo can control the fan speed aka smart fan) |
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Oct 15 2006, 06:07 PM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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Got all the stuff to built the PWM controller..hehe..stay tuned..also some stuff to build a PSU tester/loader..
Sorry it took a while, and sorry for such a short post (may consider I'm spamming, but in a hurry-PC down, so have to go CC) |
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Oct 17 2006, 06:14 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(lohwenli @ Oct 15 2006, 06:07 PM) Got all the stuff to built the PWM controller..hehe..stay tuned..also some stuff to build a PSU tester/loader.. We're waiting for the results... Sorry it took a while, and sorry for such a short post (may consider I'm spamming, but in a hurry-PC down, so have to go CC)  |
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Oct 21 2006, 11:48 PM
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Senior Member
4,539 posts Joined: Feb 2006 From: LocOmoT|oN.L0co|oti0N
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@sHawTY
Hi bro.. i was adding cooling fan like this HERE I know its wrong.. will it damage my PSU and Hardware?? Can tell me pls.. Thanks This post has been edited by yehlai: Oct 22 2006, 12:14 AM |
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Oct 22 2006, 01:40 PM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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Its not wrong, just have to make sure you don't accidentally short circuit something..for safety pull the plug when you're wiring it and double check the connections before connecting the main power cable back. Welcome to making full use of your PSU. Just as a guide, connect the
:sHawTY YESSSS, got the PWM working! Ran a few fans on it, works like a charm. And yes, fans do stop if set too low..so wierd to see a fan vibrating..not enough power to spin properly.. As a plus point, if I set the 555 signal generator's frequency low enough (audio range) the fan will emit a squealing sound when too slow/stopped..nice fan failure warning.Of course I didn't have enough..since I had a 33A MOSFET (shop didn't have the 3-5A I was looking for, so I just randomly picked another one in the same product series-didn't have datasheets to refer to at the time), means it can handle the current draw of the 130W peltier I just bought from ff7yta..put it in between my pipe101 and a leftover Athlon heatsink..and lo and behold..water soon started dripping from the Athlon HS (cold side) ..and all that still controllable by PWM..woot!So still want one, sHawTY? PS: Also rigged up PSU tester working (using 1A load on each line)..only that had to use a DMM to measure..must rig up a LED display soon. Wonder if people would be interested to buy stuff like this? Planning to build a PSU full loader (>500W) to play around with. Also thinking of trying out some of the high voltage experiments on RM Cybernetics..somebody call me crazy.. |
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Oct 22 2006, 09:56 PM
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Senior Member
1,259 posts Joined: Feb 2005 From: North Blue
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QUOTE(sHawTY @ Jun 28 2006, 04:37 PM) 7 Volts setting? me tooo... I just learn that today... |
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Oct 23 2006, 11:46 AM
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Senior Member
4,539 posts Joined: Feb 2006 From: LocOmoT|oN.L0co|oti0N
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QUOTE(lohwenli @ Oct 22 2006, 01:40 PM) Its not wrong, just have to make sure you don't accidentally short circuit something..for safety pull the plug when you're wiring it and double check the connections before connecting the main power cable back. Welcome to making full use of your PSU. Just as a guide, connect the but i always pull the fan's wire in and out to connect and discconect it while pc power is on... im really noob.. will this make dmg to other hardware?? Thank you so much lohwenli.. i will follow ur advice always pull the plug when wiring it and double check the connections before connecting the main power cable back. This post has been edited by yehlai: Oct 23 2006, 11:51 AM |
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Oct 23 2006, 05:35 PM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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QUOTE(yehlai @ Oct 23 2006, 11:46 AM) but i always pull the fan's wire in and out to connect and discconect it while pc power is on... im really noob.. Well, if your hands are damn steady and you don't short circuit anything then you can even with power on..but I don't recommend it..blew a circuit once when I accidentally crossed a 12V line to ground (VGA fan). Lucky the PSU safety switch shut it off or else it would have blown up will this make dmg to other hardware?? Thank you so much lohwenli.. i will follow ur advice always pull the plug when wiring it and double check the connections before connecting the main power cable back. . Had to do some painstaking soldering on the blown AGP contact..TRUST me, this is not something you'll want to do ..imagine if it was something more expensive?What I still consider somewhat safer (but still need steady hands, and only if you really need to do it)-is connect proper connectors (3-pin fan, molex) while the power is on. Any loose conductor in a PC is a potential problem, if you need to wire anything while the PC is on take EXTREME care not to cross any contacts except for those which you intend to (and make sure you know well what are you are doing). About damaging other hardware, it won't happen unless you short something or overload the PSU (unlikely if you're dealing only with fans). |
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Oct 23 2006, 08:47 PM
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Senior Member
4,539 posts Joined: Feb 2006 From: LocOmoT|oN.L0co|oti0N
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hehe
thanks.. b4 tht i tot everything is safe and easy to handle.. becoz just a small smaal fan.. runing 12V DC also (i think its little). Haha proof tht i was wrong lolz better just leave it.. dont play too much with it, as long as it can run then ok ledi... This post has been edited by yehlai: Oct 23 2006, 08:49 PM |
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Nov 6 2006, 04:26 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(yehlai @ Oct 23 2006, 08:47 PM) hehe Or you could probably make a switch to turn the fan on and off as you like... thanks.. b4 tht i tot everything is safe and easy to handle.. becoz just a small smaal fan.. runing 12V DC also (i think its little). Haha proof tht i was wrong lolz better just leave it.. dont play too much with it, as long as it can run then ok ledi... A switch is not a very hard thing to be done right? |
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Nov 13 2006, 09:42 PM
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All Stars
14,909 posts Joined: Jul 2005
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Some extra guide to make you're fan run at a speed that is over the maximum speed you're fan is set to run on...
QUOTE use the power from ur molex as usual from the +12v (yellow wire) line.. as for the fan's ground...take the ground from ur 20/24 pin cable on ur PSU. use any of the "-" line as ground...just choose which one u want... eg. +12v & -3.3V will give u 15.3V. +12v & -5V will give u 17V. +12v & -12V will give u 24V. take note that ur fans WILL die sooner. This guide is a courtesy of mADMAN... Salute "Lelaki Gila"... This post has been edited by sHawTY: Nov 13 2006, 09:45 PM |
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Nov 13 2006, 09:56 PM
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All Stars
10,530 posts Joined: Nov 2004 From: Petaling Jaya & Mid Valley
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salute to me for wat??? salute to shah81 la....
he mentioned it before here...its just that i remembered what he said |
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Nov 13 2006, 11:35 PM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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I need to do some correction for you, there is NO -3.3v line, only a +3.3v line..
QUOTE use the power from ur molex as usual from the +12v (yellow wire) line.. as for the fan's ground...take the ground from ur 20/24 pin cable on ur PSU. use any of the "-" line as ground...just choose which one u want... eg. +12v & -3.3V will give u 15.3V. +12v & -5V will give u 17V. +12v & -12V will give u 24V. take note that ur fans WILL die sooner. laugh.gif Might as well I give the full list All possible fan voltages (connect lower voltage to black wire) -Note that the negative voltage lines cannot handle much current, one high power fan is probably the most it can handle. +12V & -12V =24V +12V & -5V =17V +12V & GND =12V (default) +12V & 3.3V =8.7V +12 & +5V=7v +5V & -12V =17V +5V & -5V =10V +5V & GND =5V +5V & 3.3V =1.7V +3.3V & -12V =15.3V +3.3V & -5V =8.3V +3.3V & GND =3.3V Any voltage above 12V, use at your own risk-fan will most likely spin quickly for a short while then go up in smoke equally fast. Also, if using anything other than the default voltage, RPM measurement might not work properly. Voltage line identification +12V -yellow +5V -red +3.3v -orange Ground - black -5V -white (not present in newer PSUs as no longer needed by current PCs) -12v -blue This post has been edited by lohwenli: Nov 15 2006, 01:56 AM |
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Nov 14 2006, 06:43 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(mADmAN @ Nov 13 2006, 09:56 PM) salute to me for wat??? salute to shah81 la.... Owh, really?he mentioned it before here...its just that i remembered what he said Salute to shah81 then... Hehe QUOTE(lohwenli @ Nov 13 2006, 11:35 PM) I need to do some correction for you, there is NO -3.3v line, only a +3.3v line.. Owh, thanks mate!!! Might as well I give the full list That sure help us alot in understanding it... |
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Nov 20 2006, 07:13 PM
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Senior Member
2,295 posts Joined: Jan 2005 From: Penang
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one thing i not so clear, how we estimate the fan speed after undervolting it at 7v or 5v... sry for noob question, kinda lack of knowledge bout this....
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Nov 21 2006, 07:05 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(lichyetan @ Nov 20 2006, 07:13 PM) one thing i not so clear, how we estimate the fan speed after undervolting it at 7v or 5v... sry for noob question, kinda lack of knowledge bout this.... Use Speedfan or PC Wizard 2006. Those softwares will show the speed of you're fan... |
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Dec 3 2006, 01:40 PM
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Junior Member
42 posts Joined: Sep 2005
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QUOTE(SkyDriver @ Jul 20 2006, 12:49 AM) here... lol |
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Dec 3 2006, 01:54 PM
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Senior Member
2,603 posts Joined: Sep 2006
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QUOTE(beastfreak @ Dec 3 2006, 01:40 PM) may i know where can i get this item? i think moderno got em, pm him lor |
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Dec 3 2006, 08:52 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(beastfreak @ Dec 3 2006, 01:40 PM) may i know where can i get this item? Ask this guy:tnghian http://forum.lowyat.net/index.php?showuser=3961 |
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Dec 3 2006, 09:04 PM
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Junior Member
26 posts Joined: Jul 2006 From: Melaka
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i think change the transistor in the fan's electronis board....then the fan will spin very fast
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Dec 3 2006, 09:31 PM
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All Stars
14,909 posts Joined: Jul 2005
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QUOTE(SusiE^QueeN @ Dec 3 2006, 09:04 PM) i think change the transistor in the fan's electronis board....then the fan will spin very fast And that will kill you're motherboard very fast... Not to forget that'll kill the motherboard's manufacturing warranty... |
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Dec 4 2006, 06:27 PM
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Senior Member
971 posts Joined: Aug 2006 From: Penang
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QUOTE(SusiE^QueeN @ Dec 3 2006, 09:04 PM) i think change the transistor in the fan's electronis board....then the fan will spin very fast I think its possible, planning on opening one of my half dead fans to try (probably in a month's time, super busy now). Based on what I understand on how DC brushless fans work they have an unusual ammount of electrical resistance for the circuitry involved. Lowering the resistance to increase the current will get the fan to spin faster. Real danger is that your fan will burn out-coils are designed to only handle up to a certain amount of current depending on the type of wire used and its heat dissipation capability (don't dream of putting a heatsink though). Unlikely that you'll fry the motherboard, most also the mobo will not be able to read the fan rpm-happens on my Abit IS-7, sometimes when the fan speed is too high it will just read zero.Reason why fan speed might not read correctly when using other wires than ground for the black fan wire-fans produce a signal switching between a high voltage and a low voltage for each fan revolution, typically the low voltage will correspond to the voltage connected to the black wire. Once something other than ground is connected, the monitoring chip might not be able to read the low voltage as its not low enough, so the rpm count will remail zero. |
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