speed controlled desk fan

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

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Step 1: Get power source

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

carmaster says: Apr 29, 2011. 7:41 AM

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

wow, memories.

sdallesasse says: Nov 16, 2008. 6:52 PM

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

grampafish (author) in reply to sdallesasseNov 17, 2008. 4:12 AM

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

Punkguyta in reply to grampafishMay 13, 2010. 10:34 AM

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?

billdan says: May 14, 2009. 9:45 PM

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

Xamith in reply to billdanJul 16, 2009. 10:19 AM

unless your using linux...

grampafish (author) in reply to billdanMay 20, 2009. 4:17 AM

this sits on your desk

threewheela says: Jan 20, 2010. 4:01 PM

ha ha cool. i have that same transformer.

mrbobdog707 says: Aug 22, 2009. 1:55 AM

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.

grampafish (author) in reply to mrbobdog707Aug 31, 2009. 4:40 PM

your welcome

explosivemaker says: Nov 18, 2008. 12:01 PM

cool idea....

shooby says: Nov 16, 2008. 2:35 PM

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.