How to Convert a Case Fan to USB

For this project, you will need:
A pc case fan
scissors
a usb cable (doesn't matter what the end of the cable is as long as one end is a full size male usb jack)
a wire stripper and electrical tape

The start of our journey is to use your scissors to cut the connector off of the case fan.

Now we need to strip the ends of the black and red wires with your wire stripper. If you want, you can cut the other wires short so they stay out of your way. We will not be needing them.

Now cut the end of your usb cable that is not male off.

Now you need to strip the usb cable to reveal the shielding. peel back this shielding to reveal the red and black wires. You can cut the other ones, as we don’t need them.

Next, you need to strip the red and black wires.

Now we need to twist the red wires together and the black wires together. Make sure to tightly twist them so you get a stable connection. If you want to take this a step further, you can solder the wires instead of twisting them, but twisting the wires should be enough.

Now you should individually tape up the black connections and the red connections. Then you should cover those in a layer of electrical tape as shown. If you want a cleaner look, you can use shrink wrap over the individually wrapped wires instead of tape.

Step 8 is to simply plug it in to either your computer or a usb charger to test it. (The fan is actually spinning in the picture)

Have fun staying cool with your new USB fan!