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Old 02-08-2008, 05:52 PM #1
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Phazonx Phazonx is offline
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Default RC car steering coil for homemade scanner

I just recently ripped apart an old RC car and was planning to use the steering coil to make a scanner.

The first one was a small car and was different that I expected. I expected a coil and magnet. Instead, it was just a 3 volt motor with gears. I was disappointed.

The next car was a little better and it had what I wanted. There was a magnet and a coil of wire. Sending power through one way made the magnet move left, and the opposite polarity made it go right. I nailed the moving magnet part to a board so it could move freely. I hooked up the coil to my stereo and sent about 10 watts through it. It works well and the magnet part moves nicely!


I glued a mirror onto the side of the magnet to I can shine the laser at it. It works quite well, but there is an unstable "extra" axis that results because the magnet is moving in all directions.


How can I make it stable so in only moves left and right? At the moment, it seems to make zig-zags all over the place.


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