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speed controlled desk fan

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how to control a computer fans speed and turn it into a desk fan.

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Step 1Get power source

you will need to get a model train transformer. just make sure it's 12 volts.

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12 comments

Apr 29, 2011. 7:41 AMcarmaster says:

Oh man, that transformer is the exact one I have from the hobby train I had since 15 years ago.

wow, memories.

Nov 16, 2008. 6:52 PMsdallesasse says:

Good Instructable. However you may want to get some clearer pictures.

Nov 17, 2008. 4:12 AMgrampafish (author) says:

thanks for the comment! all that i had was a 3.1 megapixel camera.

May 13, 2010. 10:34 AMPunkguyta says:

You can take clear pictures with a 3.1MP camera, my camera is only 5.2MP, only about 2 more MP than your camera, yet it takes SURPRISINGLY clear pictures at high resolutions. Perhaps you just need to learn how to properly use a digital camera?

May 14, 2009. 9:45 PMbilldan says:

It is much simpler to install speedfan and it is free. You can set the temps of components such as the cpu which is very critical to keep properly cooled. You can monitor voltage requirements and control three fans automatically based on the operating temperature you specify ie.. high temp setting to start the fan and what rpm you want which keeps the fan noise down. I have used it for a couple years since my cpu went up in flames. Now my system is water cooled and has extra fans and I can monitor the temps,good luck

Jul 16, 2009. 10:19 AMXamith says:

unless your using linux...

May 20, 2009. 4:17 AMgrampafish (author) says:

this sits on your desk

Jan 20, 2010. 4:01 PMthreewheela says:

ha ha cool. i have that same transformer.

Aug 22, 2009. 1:55 AMmrbobdog707 says:

This is great and simply idea, thank you for this Instructable was looking for a way to controller the speed of my fans for entertainment cabinet, and this looks the best solution so far.

Aug 31, 2009. 4:40 PMgrampafish (author) says:

your welcome

Nov 18, 2008. 12:01 PMexplosivemaker says:

cool idea....

Nov 16, 2008. 2:35 PMshooby says:

This is simple, but a really good idea. Those transformers aren't difficult to come by at all. It's also great to be able to know that your computer is staying cool, without having to always have the fan blasting, because if you're just typing or listening to music, an auxiliary fan at full power can be overkill.