what is the primary sector: plotter
    • Hiển thị các bài đăng có nhãn plotter. Hiển thị tất cả bài đăng
    Hiển thị các bài đăng có nhãn plotter. Hiển thị tất cả bài đăng

    Thứ Năm, 8 tháng 8, 2019

    Centre Pivot Pen Plotter - SVG Output - YouTube David Bynoe

    Centre Pivot Pen Plotter - SVG Output - YouTube David Bynoe
    So I discovered the Geomerative Library (http://www.ricardmarxer.com/geomerative/) it lets processing import SVG files, and has a build in polygonizer. Its a bit flaky, some round corners end up square, but I will see about fixing that on the next revision. On the plus side, I can now output svg files in vector mode, no more raster scanning!

    Centre Pivot Pen Plotter - SVG Output - YouTube

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    1,164 views views1,376 followers
    Science & Technology Upload TimePublished on 10 Feb 2013
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    Thứ Hai, 5 tháng 8, 2019

    Four Cable Robot Test - YouTube David Bynoe

    Four Cable Robot Test - YouTube David Bynoe
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    Polar Drawing Machine - Vector Plotting test. - YouTube David Bynoe

    Polar Drawing Machine - Vector Plotting test. - YouTube David Bynoe
    I finally bit the bullet and got vector plotting programed into drawing machine. I ended up using the Geomerative processing library to load and convert an SVG, it has a polygonize function that makes it fairly easy. Each segments start and end points were converted to polar coordinates and sent to the machine. At larger length segments I do get a step pattern as one axis moves faster than the other, but I can get around this by making the steps really tiny and waiting till both axis have hit their target, any remaining jitter is mostly covered up by the bleed from the felt marker. If I switch to a ball point I can make the line segments as small as a tenth of a millimeter. Draw order is controlled by the layer order of the SVG in Illustrator. I still have to work out how to make one end of the line a start, as a few of the words are drawn backwards in this test. Oh, if you haven't guessed it, the formulas are for the conversion between cartesian to polar coordinates and back again.

    Polar Drawing Machine - Vector Plotting test. - YouTube

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    12,663 views views1,376 followers
    Science & Technology Upload TimePublished on 26 Oct 2012
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    Four Cable Drawing Machine - YouTube David Bynoe

    Four Cable Drawing Machine - YouTube David Bynoe
    This is a cable driven drawing machine I constructed for the Telus Spark Science Centre in Calgary, Alberta. More information and construction details are on my blog at: http://dbynoe.blogspot.ca/2013/12/fou... Each of the four stepper motors is connected to a pulley and string. By winding in or letting out string on each corner the computer can position the draw head anywhere in three dimensional space, or at least within its work envelope of roughly 590x590x220mm. The machine is controlled with LinuxCNC using a custom kinematics module and python script written by Kevin Loney http://www.brainsinjars.com. Its input files are standard g-code, the same format used for controlling a CNC mill, all the weird coordinate transformation math is handled by the kinematics wrapper. Accuracy is pretty good, theoretically it can position itself to about 0.1mm, this breaks down near the edges of the draw area as the cables sag, leverage, and a variety of other interesting physics effects take hold. A big thanks to everyone at Calgary Protospace http://www.protospace.ca for all the help. Go visit and support your local hacker and maker spaces, they are awesome.

    Four Cable Drawing Machine - YouTube

    4,191 Likes4,191 Dislikes
    1,850,890 views views1,376 followers
    Science & Technology Upload TimePublished on 6 Dec 2013
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