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how to improve the brachioGraph project to make it special

samiboutgoulla

hello everyone I made a project www.brachiograph.art/.../construct.html brachioGraph with three servo motors and a raspberry pi, I need help to improve it, add something design thing, add something else that will make it betterf

  • 0

    What is the end goal of the project? Is for school, personal interest, project for work....

    What made you chose this project to work on?

  • 0

    It would benefit from more precise servos, but they are heavier, so the whole mechanism probably needs to get stronger.

  • 0

    That’s a really cool project! Is that your video, or is that showing what your project needs to extend?

    You could make it larger, requiring some extra support for the outer servos, maybe like the way bridges have towers with wires going to the surface. 

  • 0

    I saw a similar design done in the early 80's, except they also had incorporated a second linkage with rotary encoders to be used as an input digitiser device.

    So the operator could trace an outline or draw freehand and the plotter would directly follow it like a telechir device.

    Also like a telechir device, the operator could add a scaling factor to enlarge or reduce the size of the output in relation to the input movements.

    Very similar to the pantograph drawing tools that had been a craze in the 70's (probably had influenced the project), however the input movements could also be captured, stored, edited, and then replayed over and over without any further user input (probably inspired by having to do 'lines' at school.). 

  • 0

    You could try a rotary base design. One motor rotates the base with the paper and the other swings the pen arm in an arc from the outside to the centre. A bit like a hard disk drive or a phonograph tone arm.

    As each motor is fixed to the same base plate you might get a more rigid design. 

    I've seen 'coaster plotters' done this way but they tend to use a linear lead screw arrangement to move the pen.

  • 0 in reply to beacon_dave

    If you could turn it into a gear works like this one, with drawing functionality incorporated, that would be spectacular (starts at 2:30: )

    Source: Syberia, the world before, by Belgian cartoonist Benoit Sokal

  • 0 in reply to Jan Cumps

    That looks more Spirograph than Sketch-A-Graph Slight smile

    Reminds me a bit of the kinetic sculptures by David Roy 

    https://www.youtube.com/watch?v=P146sMmRwnI&list=PL2FC4A30A787F8B2B

  • 0 in reply to beacon_dave

    I think that the inspiration comes from the Tourbillon mechanism

    The Wankel engine of the watch world

  • 0 in reply to beacon_dave
    Jan Cumps said:
    Source: Syberia, the world before, by Belgian cartoonist Benoit Sokal

    for the lovers of cameos, a snippet from that video:

    image

    When I look outside my kitchen window:

    image