How to Make a Personal Mini Desk Fan Out of an Old Computer – Fits in Your Pocket

Introduction: How to Make a Personal Mini Desk Fan Out of an Old Computer – Fits in Your Pocket

About: I'm an inventor, creator, videographer, photographer, podcaster, soccer lover, sketcher/artist, and video editor. Find me on YouTube and Unsplash at Jadon Kelly. You can also find me on YouTube at Tech Particle

I'll be showing you how to make a personal mini desk fan out of an old computer. A bonus is that it even fits in your pocket. This is a very simple project, so not much experience or expertise is needed. So let's begin!


Some materials you need:

  • A computer fan
  • 9v battery
  • Scissors
  • Knife
  • Some sort of glue
  • Paper clips

Step 1: Get Your Fan

The first step is to obviously obtain a fan. I got one out of an old PC power supply.

Step 2: Cutting the Wires

Cut the wires to an appropriate length.

Step 3: Grab Your 9V Battery

Grab your 9V battery, figure out where you want to place it on the battery, glue the area where you want it, and then finally place the battery there.

Step 4: Setting It Up

You don't have to do this, but you can grab a paper clip, wrap the wire around it, and place it on its proper terminal. (This allows for a permanent connection.) Then the other wire acts like the on/off button or switch. Just place it on the proper terminal to turn it on, and take it off to turn it off. Remember, the black wire goes to the negative end of the terminal and the red goes to the positive.

Step 5: Your Finished!

Your now finished with the fan! As you can see, the fan is similar in size to the pictured wallet, so you can carry this in your pocket.

Once the 9V battery dies, just go through the process again with a new battery in its place.

Step 6: (Optional) Watch the Video on How to Make It

If you want, you can also watch a video on how to make this fan.

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    2 years ago

    Good idea but you might want to add some sort of screen/protector to prevent fingers from entering the fan area - even with only battery power those blades can cause significant damage to flesh - techie buddy of mine stupidly 'tested' to see if a fan was spinning resulting in the loss of a finger tip.

    Jado Tornado
    Jado Tornado

    Reply 2 years ago

    Ouch! Yeah that would be a good idea to add a screen. I am sure it could be done pretty easily. Although I guess it just hasn't been a big enough of an issue for me. I have gotten my fingers in there before (which was uncomfortable) but my fans I guess aren't powerful enough to do much damage.


    Question 2 years ago

    How do you know which of the 4 wires leading out of the fan are the 2 which are needed?
    My old computer fan has black, yellow, blue and green.

    Jado Tornado
    Jado Tornado

    Answer 2 years ago

    Hmm, I’m actually not sure. I haven’t encountered that. Sorry.