Picture of 5 Minute DIY Motor
When I make a project, there are four things I look for.
  1. Low cost: If the project is going to cost me a million dollars (exaggerated a little bit) I won't make it. 
  2. Easily accessible materials: If the materials are impossible to find (unless it is a really, really cool project) I most likely won't attempt it.
  3. Usage: What will the project teach me? What experiences will I take away from it? If I had students, what would this teach them? 
  4. Simplicity: If the project uses 6 integrated circuits, I won't even try. Most likely, I will try to find a way to make it with a microcontroller. If nobody had done the project before with a microcontroller (unless it is really good) I won't try.
Therefore, when I found out I could make a motor without super-high tech stuff, I had to make one.

However, of all the tutorials I had looked at nobody had made it simple enough so average people could do it.

This would be great for classrooms because it teaches magnetism. My science teacher had one but he plans on getting more soon. It is small, cheap and easy.

Step 1: Parts You MAY Need to Purchase.

Picture of Parts You MAY Need to Purchase.
You will need:
1 AA Battery (a AAA battery will work as well as a AA battery which will work just as well as a C battery which will work just as well as a D battery.) (I used a AA Rechargeable Battery because the motor shorts the battery and therefore will die quickly and so a rechargeable is nice.)
1 Neodymium Magnet (This is probably the only part you will need to buy unless you have an unusually large junk parts parts bin.) 
2 Safety Pins
3 Feet or 1 metre of 18 AWG Magnet Wire ( I used 18 because of its thickness and stability. It is a bit harder to work with.)

Rubber Band
Cotton Ball

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Nyxius2 years ago
You could have also magnetized the pins by a type of magnetic hysteresis effect. The motor has a variable magnitude field that alternately tensions and relaxes the field. This tends to align magnetic spins in the metal giving a net magnetic field of its own. This effect is known as remanence.
Carmen2828 Nyxius4 months ago

Wow, That's a mouthful! I work on PCs and Microchips, and I've never heard of that concept before.

Nyxius Carmen28284 months ago

Applied physicist... sometimes I can't turn it off. If you ever wanted to observe a magnetic field directly you could exploit the Kerr effect.

Take your magnetic sample and light it up with a polarized light source (I prefer lasers). The Kerr effect says that light passing through a magnetic field gets rotated. If you place a polarizing filter on your microscope and look at your sample, some regions will be dark, and others will be brighter. The dark regions will be areas where the atoms lined up to create a magnetic field. http://upload.wikimedia.org/wikipedia/commons/b/b4/NdFeB-Domains.jpg

blinkyblinky (author) 2 years ago
To those who are concerned about whether if I know why the safety pins are sticking to the battery, I do know why.
great instructable.by the way i think the safety pins got attached to the battery because of the magnet,the magnet was may be attached with the metal part of the battery!
blinkyblinky (author)  argha halder2 years ago
I know.
Nyxius2 years ago
The safety pins have a higher magnetic permeability than the air. This means that flux lines would rather travel a longer distance through the pins than through air. This is why magnetic shielding works. This greater permeability makes the pins stick to the battery which also has a higher permeability. This creates two horseshoe shaped sets of flux lines. It also helps that the pins and battery are probably ferromagnetic materials which means that they amplify any field passing through them. I could go into more detail if anyone wants me too.
Nyxius2 years ago
Metre is the french way of spelling it.
lis.tesla3 years ago
the reason the safety pins are sticking to the battery is because of the magnet on the battery.
It is magnetizing the outer coating of the battery,
which is why the safety pins are sticking to it>
Think outside the box
M0HIZ lis.tesla3 years ago
Shouldn't that be outside the battery?
blinkyblinky (author)  lis.tesla3 years ago
i think rimar2000 stated that already...
oh, okay
I didn't read all the comments before
blinkyblinky (author)  lis.tesla3 years ago
MOSLAW3 years ago
please how do i get the magnet and can i use rechargable battry
blinkyblinky (author)  MOSLAW3 years ago
I don't think its possible. You see, the coil is bound to make the battery as dead as it can go before it runs down so I don't see how it could happen. Maybe, you could put a diode to charge it but it might have to be a rechargeable battery...who knows? Maybe you can make one.
blinkyblinky (author)  brahimhackman3 years ago
You're welcome.
244 Jake3 years ago
Only a commnet on your Mission Statement.

This is the longest true sentence made up of only two letters words.

If it is to be, then it is up to me to do it.

Big Jake
blinkyblinky (author)  244 Jake3 years ago

cobalt4203 years ago
Great construction of your motor but it could use a video of it in uses. thanks,

~ Cobalt420
blinkyblinky (author)  cobalt4203 years ago
The video on my camera at the moment doesn't work well...
OK that's cool just a suggestion that it might make it better keep up the good work!
blinkyblinky (author)  cobalt4203 years ago
I will have in in January.

iceng3 years ago
Impressive idea to use safety pin spring end holes as a bearing for the motor shaft, congratulations on your Win .

blinkyblinky (author)  iceng3 years ago
Thank you.
TURTLE0013 years ago
Could you substitute the battery for say '240v'?!
If that makes me sound like an idiot dont be to harsh im not really that great with electronics.
I just wonder would that much power make it stronger?
blinkyblinky (author)  TURTLE0013 years ago
It might work...theoretically...

Problem is:

A: Where are you going to get the power?

B: Even if you do get a hold of the voltage, you are shorting the battery...is that safe to do?

If you plan on using an AC outlet I suggest you don't because it can cause fire if shorted.
blinkyblinky (author)  blinkyblinky3 years ago
You would also need a stronger magnet...I think...
oh ok, sorry didnt mean '240' I meant '24' !!
Typo, but yeah bigger magnet, Thanks!
blinkyblinky (author)  TURTLE0013 years ago
24 is pretty safe to work with and should work if you use 4 lantern batteries or two Lead -Acid batteries...
LesB3 years ago
You can also make a generator with this setup. Use the battery adapter without a battery inside and put a propeller on one of the wire ends. Supply some wind. When the coil is turned you generate electricity.
Or since you use a rechargable battery use that and you'll charge the battery when the coil is rotated. Theoretically anyway. Realistically, you probably won't generate enough voltage to charge the battery.
blinkyblinky (author)  LesB3 years ago
The last part is true. It is shorting the battery so it wouldn't generate muh power. But then again, I think that the battery would propel the coil instead of the other way around.
Actually it would be a tug-of-war between the wind-force driving the propeller/generator and the battery. Whichever provides the most torque to the rotor wins (they act in opposite directions on the rotor). This is the same situation with generators on the electrical grid. Any given generator will act as a motor if not enough energy is delivered to it from the steam or water pressure from a dam, or whatever source is being used.

But in a practical sense, you're probably right anyway, in this case. I don't think this apparatus acting as a generator would be able to overcome the force provided by the battery.
OBISKI LesB3 years ago
Actually, if you used a one way bearing (like used with nitro rc cars) then it would only be able to spin one way therefore it could be a generator.

They use one way bearings in wind turbines etc.
blinkyblinky (author)  OBISKI3 years ago
blinkyblinky (author)  LesB3 years ago
True...very true.
snatr3 years ago
I took a look at this one because from the pictures I couldn't see how you would get the poles to reverse. After thinking about it, I realized that the because of the loop, the poles reverse themselves. Nice!
But if anyone wants to build a real simple motor, they can build one with a "C" or "D" battery, a short length of wire (about twice as long as the battery), a neo-magnet (round), and a straight pin.

All they have to do is set the straight pin dead center of the neo-magnet and suspend it from the dent in the negative (or -) end of the battery (It should hang there magnetically). Then take one end of the wire and hold it into place at the battery's positive (or +) with one of the fingers from the hand you suspend it in the air with. With the other hand you very lightly touch the side of the magnet and it will start spinning. And btw, if you filp the magnet over, it will spin the other direction.
It might be a better visual if you draw a line across the magnet with a marker or something, but I would worry about breaking the conductivity of the pin. Maybe just a dot or two on the face?
Also I didn't have much of a problem hanging the pin/magnet combination from my battery, but if you do, you could think about snipping the pin to shorten it, or use a stronger magnet.
Pretty neat demonstration. It'll give you something to think about! I still haven't got my head around how this works.

Sorry for the long comment. I might have posted it here, but I don't subcribe. Thought this was a good place for it.
blinkyblinky (author)  snatr3 years ago
I know....it just didn't work for me...so I guess it wouldn't work for others...
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