- Low cost: If the project is going to cost me a million dollars (exaggerated a little bit) I won't make it.
- 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.
- Usage: What will the project teach me? What experiences will I take away from it? If I had students, what would this teach them?
- 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.
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.
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.)
Step 2: Averagely Coil Your Coil.
Start by taking the wire, and leaving some slack...like 3 inches and about 6-7 cm and coiling it.
Messiness counts! Randomly and speedily coil it. Overlapping is fine and actually, if you do it messier, the coil performs better.
Now, because this is 18 awg wire, it is thicker and, when coiled will remain together.
To hold it securely together, hold it and wrap it around the coil a few times.
Now, at the end of the coil, use a knife (and being very careful not to kill yourself) to strip the insulation off of the bottoms of the ends.
Next, bend one end of the wire up and the other down so that the coil doesn't go flying.
Step 3: Almost Done! But Not Quite!
If you don't want to burn yourself (the rubber band won't do anything except for keep the pins from flying) then take the cotton ball and rip it into two parts. Then, stick the pin in a "pocket" that you create by sticking your finger in...sort of like pottery...well I guess it's more like cottonery...
Either way, put the safety pin in like in the third picture. Flatten the cottonery and rest the safety pin on it like in the fourth picture. Next tape it down onto the cotton with a piece of regular household tape like in the fifth and sixth picture. Then, like in the seventh picture, make two of them.
Now for assembly.
Step 4: Final Assembly.
Step 5: Done!
If it still doesn't work, try leaning the coil to one side. I have found that the coil tends to lean to one side of the battery. It probably is influenced by the magnet. Try putting the magnet directly under the coil and give it another spin. If it still doesn't spin, it might be a deadish battery. If it doesn't work then, see if you made a lousy connection. By now, if it still doesn't work, see if you had striped all the insulation off the ends. If so, then take a marker and color in half of the ends or, just cut the wire and unwind a turn or two. If you have any more trouble, leave a comment.