Instructables
loading
loading

How to make a ECO desktop fan from old computer parts

Picture of How to make a ECO desktop fan from old computer parts
IMG_1112_resize.JPG
IMG_1100_resize.JPG
IMG_1101_resize.JPG
IMG_1102_resize.JPG
IMG_1103_resize.jpg
Here is my project on how make a ECO desktop fan from old computer parts. This desktop fan will reduce your cooling expense. This fan only uses 4 watts!! of energy when compare to regular desk fan which uses about 26 watts or more.

Parts needed:


1. PC case fan or Power supply fan (PSU fan spins slower so case fan is preffered)
2. Old harddrive
3. PSU on/off switch
4. Electrical wires (scrap from old PSU)
5. Piece of electrical grounds wire (use for support
6. Piece of tv cable wire (not necessary)
7. 12 Volt adapter or a working pc PSU
8. Clothes hanger

Note: PSU means Power supply unit which is found in a computer.

Tools:
1. Pliers
2. Wire cutter
3. Wire stripper
4. Soldering iron
5. Solder wire
7. Electrical tape
8. Drill
9. Philips and Flat head screw driver.

 
Remove these adsRemove these ads by Signing Up

Step 1: Step 1: Preparation

Picture of Step 1: Preparation
IMG_1105_resize.jpg
IMG_1108_resize.JPG
IMG_1132.jpg
IMG_1115_resize.JPG
1. Remove wires that you are going to use from the psu or if you have other wires that can be use.
2. Dismantle the harddrive, remember that there are usually hidden screws under the label.
3. Wrap electrical grounds wire around the fan. This will prevent the fan from shifting left or right.
4. Cut electrical grounds wire to length.

Step 2: Step 2: Preparation Cont..

Picture of Step 2: Preparation Cont..
IMG_1121_resize.JPG
IMG_1118_resize.JPG
IMG_1130_resize.JPG
IMG_1125_resize.JPG
1. Remove the harddrive circuit board without damaging it, you will need it later.
2. Drill hole in the harddrive housing for on/off switch.
3. Wrap wires together then insert them in the harddrive housing.
4. Solder power wire to switch. (cut only the red wire)

Step 3: Step 3: Harddrive circuit board

Picture of Step 3: Harddrive circuit board
IMG_1129_resize.JPG
IMG_1104_resize.JPG
1. Remove the solder from the connectors as seen in image. Slightly lift the contacts so they don"t
    make contact with the circuit board. Use a flat head screw driver to scratch the contact from the
    circuit board. This will prevent the circuit board from powering up.

2. Solder positive and negative to the connector .

3. Test to ensure that everything is working.

You may use a 12v adapter or a working PSU to power your fan.


Step 4: Finish

Picture of Finish
Congratulations you have built your ECO friendly desktop fan.
triumphman15 days ago
Where do I connect to power it up ? The fan has 4 wires coming from it. Do I cut wires ans splice to power supply wires ? which ones ? Not very clear in your words !