Cheap and Easy LED Fan




About: 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 enjoy coding and decoding binary code.

In this instructable i will show you how to et that cool LED effect for free.

Step 1: Step 1: What You Need

You will need: ( shown )
330 ohm resistor
A fan
Assorted LEDs
9 volt battery clip
Also: ( not shown )
9 volt battery
Wire strippers/ cutters
Soldering iron

Step 2: Step 2: Solder

Solder the 330 ohm resistor to the 9 volt battery clip. Then solder all of the positive leads from the LOED to the positive battery lead, and the negatives to the other side of the resistor. Then test too see if the LEDs work.

Step 3: Step 3: Tape

Now tape the LEDs to the fan, hook up the 9 volt and tape that also.

Step 4: Step 4: Tape

Now tape the fan to the floor.

Step 5: Video

Your done! This is a video of the fan in action.

Step 6: Final Note

Thank you for viewing my instructable. Please leave any comments, questions or suggestions. Please rate my instructable. Thanks.



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    15 Discussions

    Robot Lover

    7 years ago on Introduction

    You could put a motor against the fan's shaft and use it as a generator, so every time the fan is switched on, the LED's turn on. It would also make it look a lot neater.

    Couldn't you just extend the wire and have it sit on top of the fan

    @@|@@ I guess you would have to be carefull about the Wires
    @@@|@@@=Front Being Severd
    @@@@ Legend
    @@ |=Wire

    1 reply

    9 years ago on Step 3

    I would have thought that the fan would be so far out of balance it would try to shake itself apart with the battery attached to the blade?

    1 reply

    That's why you tape it to the floor. You can hear the fan rattling in the video. This would be really cool with a (modified) miniPOV. Or tape throwies to each blade.


    9 years ago on Introduction

    Although it does look really neat this simply is not safe. I'd exercise a good amount of caution turning that fan on with a battery taped to it. At least put the cage on the front of it. You could take an eye out. But again, this is pretty cool and I always have enjoyed seeing the streaks that light creates when moving at a high speed. Also to improve a little bit you might want to see if you could even figure out a way so that the battery isn't mounted on the fan. Perhaps two conductive circular strips around the base and 2 contact leads that move with the fan.

    2 replies

    Reply 9 years ago on Introduction

    I would like to make conductive strips, but i've tried before and it didnt work out well.


    Reply 9 years ago on Introduction

    I've never even made an attempt but I see them on fuel pumps all the time since I'm a mechanic. lol always thought about what I could use them for and could never come up with anything.


    9 years ago on Introduction

    if the center spins aswell perhaps try attaching the battery as close to the center as possible to balance the fan then you may be able to add a 3rd led

    1 reply

    Reply 9 years ago on Introduction

    That's what i was planning, but i didn't have a 3rd LED, so i figured what the heck.


    9 years ago on Introduction

    Wow, I wouldn't have expected this not to fall apart, impressed! L