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

Step 1: Step 1: Gather Parts

You will need:
Computer fans
Hot glue gun
Hot glue
Soldering iron
Toggle switch ( see picture )
Posicle sticks
DC adaptor
Resistors and LED ( see picture )
Your hands
Cable ties
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, &quot;Great minds think alike.&quot; Here's a link to mine <a href="http://www.instructables.com/id/Emergency-Fan-Power-Unit-EFPU/" rel="nofollow">http://www.instructables.com/id/Emergency-Fan-Power-Unit-EFPU/</a>
lol ausome!!<br />
are you from the uk?<br /><br />great ible<br />
No, I live in Canada. Thanks BTW!<br />
where did you get all of those?
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.
Since i have posted this, i have noticed the LED overheat. You may want to use strronger resistors
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.
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.
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.
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.
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
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
You probably want 500 to 1KOhm, see what 1K does and go down from there if it's too much. L
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.
Aye, but what did you use - one of them looked like a 220 Ohm, and wired in <em>parallel</em> with the other you'd have less than 100 I think?<br/><br/>L<br/>
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?
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
I don't really see how this is useful. Perhaps if it had variable speed or an visually pleasing housing.
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.

About This Instructable


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Bio: i enjoy inventing, taking apart electronics, and rebuilding them. i also have a hobby of creating batch files, i greatly enjoy programming batch. i also ... More »
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Tags: desktop fan
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