Speed Controlled Desk Fan

About: Twitter: @devicemodder1

Intro: Speed Controlled Desk Fan

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

Step 1: Get Power Source

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

Step 2: Alligator Clips

hook the alligator clips to the silver screws

Step 3: Hook Up Fan.

hook the alligators to the fans wires.

Step 4: Stick Fan on Transformer

stick fan on transformer

Step 5: Plug It In

plug it in and turn the knob. if you like it don't forget to rate!



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    12 Discussions


    7 years ago on Introduction

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

    wow, memories.


    Reply 8 years ago on Introduction

     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?


    9 years ago on Step 5

    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.

    1 reply

    9 years ago on Introduction

    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

    2 replies

    9 years ago on Introduction

    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.