Gallery, Projects and General > Neat Stuff

From Makezine blog... LED ball

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mklotz:
It's basically a three dimensional oscilloscope.

The figures are made by feeding each axis with a slightly different rotation frequency - the same way one would feed two differing frequencies to the two axes of an oscilloscope to make Lissajous figures.

Dean W:
Pretty neat.  I was surprised I got through the whole video.  It's quite interesting.

I couldn't help being reminded of the "spinning ball of death" plot device seen in older sci-fi shows, where the hero has to get through something like that to reach the ships' nuclear device to stop the space ship from self destructing.

Anyway, quite a project, and fun.

Dean

Bernd:
I was mesmerized. What a hipnotic effect with that music playing.

Now if you want to build one take a look here: http://laserpointerforums.com/f57/led-orb-2-0-a-50012.html  Scroll down a bit and he's got all sorts of pictures on how he built it. Very neat and easy to do.

Bernd

zeroaxe:

--- Quote from: mklotz on April 24, 2010, 05:11:52 PM ---It's basically a three dimensional oscilloscope.

The figures are made by feeding each axis with a slightly different rotation frequency - the same way one would feed two differing frequencies to the two axes of an oscilloscope to make Lissajous figures.

--- End quote ---

A Whats-o-scope??? :scratch: :lol: I am not clued-up on electircs/electronics at all  :)

Bluechip:

--- Quote from: zeroaxe on April 25, 2010, 04:21:34 PM ---
--- Quote from: mklotz on April 24, 2010, 05:11:52 PM ---It's basically a three dimensional oscilloscope.

The figures are made by feeding each axis with a slightly different rotation frequency - the same way one would feed two differing frequencies to the two axes of an oscilloscope to make Lissajous figures.

--- End quote ---

A Whats-o-scope??? :scratch: :lol: I am not clued-up on electircs/electronics at all  :)

--- End quote ---

Here you are .... have a play ... :lol:

http://www.math.com/students/wonders/lissajous/lissajous.html

Try the x-freq. and y-freq. at the same value, then increment one or t'other

Dave BC

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