Introduction: Sine Wave Machine


Here's a quick video of a hand made prototype I knocked together to demonstrate mechanization of amiiform motion for a class I'm taking .

Comments

author
larslovespeace (author)2011-04-07

Technically couldnt this be a cosine waves also???

author
Lefrançois (author)2010-10-16

Avec un système de cames, on a un bateau à rames.
With a cam system is a rowing boat.

author
mattthegamer463 (author)2010-07-14

I love this. Are the cams that you used circular and mounted off center for the motion, or are they elliptical? Very very cool machine.

author

If I remember my trig class correctly they should be circles mounted off center.

author
bigt4616 (author)mattthegamer4632010-07-20

looks like the bamboo sticks or whatever they are are being held down against with what looks like a rubber band. and the rubber band is holding the stick against the eliptical cam.

author

.  If I understand the Wikipedia page on phasors, it's a circle. You should verify that with a real mathematician.

author

Yes, the sine wave does represent the amplitude of a circle, however, when shown over time, the phasor turns into a sine wave. The phasor only exists in pure math: it is always with respect to time when it is the real world.

author
Dr.Bill (author)2010-07-23

Add SMD LED's to the tips and run it in the dark would be way cool.

author
Ninzerbean (author)2010-07-14

Cool - do an 'ible.

author
Goodhart (author)Ninzerbean2010-07-15

Fits right in there with that box that, when you turn on the switch, it reached up and turned it off again LOL

author
luvit (author)2010-07-15

i hate jack-in-the-box. who invented that anyway?

author
Skyfinity (author)2010-07-15

I liked the midi pop goes the weasel. Very nice. Also, the machine was quite elegant.

author
MichelMoermans (author)2010-07-14

probably because I'm really tired but at first I thought the sticks made the music somehow :p

But that gave me an idea, you should totally put a keyboard under there :p It will play the same tune over and over again but who cares it would be awesome ^^ And I think you can rig the 'fingers" easily to play the note you want when you want :)

just a thought that came to mind though :)

author

+1 i thought that at first too! :)

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