Instructables
In this instructable, i will show you how to make a fan for your desk out of things you might have aroung your house.
 
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Step 1: Step 1: Gather Parts

You will need:
Computer fans
Hot glue gun
Hot glue
Solder
Soldering iron
Solder
Toggle switch ( see picture )
Posicle sticks
DC adaptor
Wire
Resistors and LED ( see picture )
Your hands
Cable ties

Step 8: Step 8: Solder Part 2

Now solder all of the negative wires ( from the power supply and fans ) together.
Then solder all of the fan wires to the bottom odf the switch.

Step 12: WARNING!!!!!!!!!

Picture of WARNING!!!!!!!!!
Careful! Before you test this device, mind your fingers! The fans will sping extremely fast, i foun out the hard way! They will chop up your finger like a hot knife through butter!

Step 13: Video

This is a video of the fan.

Step 14: Mods

Picture of Mods
There are several modifications you can meke, such as number of fans, size, led and switch.
BUT! You may want to add some weight at the base, when i tried this, it nearly took flight!

Step 15: Final Note

Picture of Final Note
Thank you for viewing my instructable. Please feel free to post any comments or questions, they are appreciated.
MrJentis2 years ago
Cool. This is basically the same idea I had for my desk fan. I built it before I saw your setup. I guess what they say is true, "Great minds think alike." Here's a link to mine http://www.instructables.com/id/Emergency-Fan-Power-Unit-EFPU/
IMG_2088.jpg
lol ausome!!
sharlston4 years ago
are you from the uk?

great ible
XOIIO (author)  sharlston4 years ago
No, I live in Canada. Thanks BTW!
grundisimo4 years ago
where did you get all of those?
XOIIO (author)  grundisimo4 years ago
Long story short, My auntie moved out and I'm an only child ( YAY! ), so i have a second room full of old computers, radios, basically anything you can think of. It's great for making"green" inventions by recycling.
XOIIO (author) 4 years ago
Since i have posted this, i have noticed the LED overheat. You may want to use strronger resistors
NikonDork XOIIO4 years ago
Or you could remove the LED from the circuit all together. A power indicator LED is unnecessary, because you can pretty much tell its on or not by looking at it.
XOIIO (author)  NikonDork4 years ago
True you can remove the led, i did that for now, but you misunderstood. if you are the forgetful type, it is to tell you if it is plugged inor not. thanks for the comment.
NikonDork XOIIO4 years ago
So the LED stays on whether the fan is running or not? Cause if it doesn't, then I didn't misunderstand you and its redundant cause you can see with your eyes if the fan is moving or not.
XOIIO (author)  NikonDork4 years ago
What it is, when you plug the fan in, and the switch is down, it is on to indicate a source of power. When you put the switch up, turning it on, the LED is off. It is so that you can tell if it's plugged in.
lemonie4 years ago
It's not very clear what you're doing with the resistors, but if the ones I can read stripes on are what they look like I think you've used too little. Can you clarify what resistors you have on the LED? Also steps 12-15 could be replaced by just 1 without the massive graphic L
XOIIO (author)  lemonie4 years ago
Yes, the resistors were too little of a resistance, they burnt out after a few minutes. I will test for a Better combination of them, and update the instructable
lemonie XOIIO4 years ago
You probably want 500 to 1KOhm, see what 1K does and go down from there if it's too much. L
XOIIO (author)  lemonie4 years ago
Well, i used this resistor combination for a 9 volt battery, i would suggest anyone building this would use 2 of each resistor type, so it would Most likely work for a 15 volt power supply.
lemonie XOIIO4 years ago
Aye, but what did you use - one of them looked like a 220 Ohm, and wired in parallel with the other you'd have less than 100 I think?

L
XOIIO (author)  lemonie4 years ago
I think i remember it being said it is better to have them in parralel, rather that in sieries, because it extends the life of the resistors, or something like that. By the way, how do you get around so fast, are you always on your computer, like a zombie?
lemonie XOIIO4 years ago
Was a bank holiday - I was doing things around the house most of the day. No it's not better to have these resistors in parallel for this application (as you've discovered) L
amayer4 years ago
I don't really see how this is useful. Perhaps if it had variable speed or an visually pleasing housing.
XOIIO (author)  amayer4 years ago
This is simply a start to anyone wanting a custom desktop fan. when you build it, feel free to add whatever you think is appropriate.
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