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Thread: A harmonograph, not a spirograph

  1. #1
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    A harmonograph, not a spirograph

    A harmonograph, not a spirograph. Turn the volume up a little so you can hear the pen on paper and movement sounds.
    http://vimeo.com/21999779">Drawingmachine by Eske Rex</a> from <a href="http://vimeo.com/user1762260">Core77</a> on <a href="http://vimeo.com">Vimeo</a>.</p>
    Last edited by Dan Gonzales; 04-25-2011 at 06:32 PM.
    Dan Gonzales
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  2. #2
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    that's very fascinating... I bet that's fun to play around with.
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  3. #3
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    I had a similar contraption given to me as a kid for Christmas one year. It was a gift from the aunt and uncle who always brought the coolest Christmas presents.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
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  4. #4
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    What makes it move ?????
    A Turn N Time
    Components for John Smith Organs and the Hobby Organ Builder

    Frog Pond Guitars


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  5. #5
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    Quote Originally Posted by Jay Caughron View Post
    What makes it move ?????
    An initial push or pull! The big weights at the bottom of the pendulums have a lot of momentum from that push/pull that slowly gets used up by friction and gravity.

    Here is another smaller version of a harmonograph.

    http://www.youtube.com/watch?v=H4YQonwQUDs


    And another version with a high woodcraft quality to it.

    http://www.youtube.com/watch?v=ZIKoF...eature=related


    Cheers,
    Last edited by Dan Gonzales; 04-25-2011 at 11:55 PM.
    Dan Gonzales
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  6. #6
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    Well that all makes since I just didn't realize someone moved the weights in the first video and couldn't figure out what was driving them.
    A Turn N Time
    Components for John Smith Organs and the Hobby Organ Builder

    Frog Pond Guitars


    Before you criticize someone, you should walk a mile in their shoes. That way, when you criticize them, you're a mile away and you have their shoes.

  7. #7
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    Pen-doodle-um!!!

    I had one when i was a kid ... the pendulums hung below the corner of a table and you filled 'em with sand or water or whatever ... I'm pretty sure I got mine at Hobo Days (I'll be surprised if anyone knows what that is!)
    Jason Beam
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  8. #8
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    Is that a south dakota thing? I seem to remember something like that from my brief stint living in SD...
    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  9. #9
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    Close! Very near

    Every year around august, if memory serves, the town of Britt, IA would shut down main street (which happened to be hwy 111, too) and host Hobo Days for a weekend. 5-6 blocks of various street vendors.

    Most notable in my memory are the styrofoam lizards on a wire stick that you walked; bird call things you stuck in your mouth and hissed with, the rubber-band powered bird (long before i saw it on TV), the pen-doodle-um, an electronic type of autoharp like instrument thingy ... lessee ... all sortsa crazy stuff.

    The place was a big Hobo stop going through the state and we had park there called the Hobo Jungle where they'd make mulligan stew and everyone got a little of that. They'd usually block the street off in front of our house and have BMX bike tricks on ramps and such.

    Pretty fond memories of that stuff - i went to each one between the ages of 10 and 13 or 14. Cool time
    Jason Beam
    Sacramento, CA

  10. #10
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    Quote Originally Posted by Jason Beam View Post
    Pen-doodle-um!!!

    I had one when i was a kid ... the pendulums hung below the corner of a table and you filled 'em with sand or water or whatever ...
    Yep, that sounds like the one I had. I probably still have the red fiberglass rods that made up the arms and the pendulums stashed around here somewhere. (They just seemed like they might be handy for something someday.)
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

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