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1  Using Arduino / Motors, Mechanics, and Power / Re: trying to figure out a Jellyfish-like mechanic for an art project on: February 24, 2011, 07:35:45 pm
As amanmazleifg said muscle wire (Nitinol) seems suitable, though festo does not use it. I looked at that jellyfish and other stuff that festo made in the past, they are amazing.
Ummm, maybe you can use some kind of elastic film shaped like a jellyfish and change its shape with a fan blowing/not blowing or adapting the speed. That can create a smooth jellyfish movement.
There is a little introductory text I had written about Nitinol, maybe it can help http://www.ndsgn.com/ShapeMemoryAlloyTips.pdf
2  Using Arduino / General Electronics / Re: Science Fair on: February 24, 2011, 07:22:25 pm
By the way, carbon is not a "non-conductor", in fact it conducts electricity pretty well. It is better considered as a semi-conductor. When in highschool We used to draw some heavy lines with pencils on paper, and used a lighter piezoelectric stuff to give high voltage to the line. We could see the sparks on the line as a little lightning.
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