Results 1 to 4 of 4

Thread: Robot Arm Printer

  1. #1
    Senior Member
    Join Date
    Jul 2011
    Location
    Los Angeles, CA
    Posts
    871

    Default Robot Arm Printer

    Early test of a 3-servo robot arm for drawing. Rotary joint distortion causes distinctive look. BS2 shown in these initial tests, but ultimately this will be a 20M2 project, accepting input through a PS2 keyboard and printing ASCII characters.



    First test at http://www.youtube.com/watch?v=uNIURBikrr8

  2. #2

    Default

    I like this, it could be good for "drawing" circuits for etching.

    Tweaking to move servo together to get straight lines is probably easier than the file translations to get a suitable output from PCB programs.

    Best regards,
    Colin

    Just spotted a Tutorial for getting an isolation profile for milling as Gerber File from Eagle CAD. This would make PCB drawing much easier... I might have to try reproducing your arm for this

    http://www.fablabmanchester.org/p75/...utorialNEW.pdf
    Last edited by slurp; 07-04-2012 at 18:40. Reason: More info on PCB File Formats

  3. #3

    Default

    I should strike the comment on isolation profiles... you don't want that for a Pen but you might for a cutter. Both can be handled in Eagle CAD.

    Using the CAM processor and HPGL as the device you can set your pen width to get a simple text file to describe the lines to be drawn. I under stand the plotter units (plu) used are 40 plu per millimeter and 1,016 plu in one inch. From a simple test most pads, tracks and text was made from straight lines - simple point to point with pen up or down... there was only the mounting hole that was drawn as a circle - I think that's the hard one.

    I've got to find time for this project

    Best regards,
    Colin

  4. #4
    Senior Member
    Join Date
    Jul 2011
    Location
    Los Angeles, CA
    Posts
    871

    Default

    I had this setup working at Parallax's Expo for National Robotics Week, so I used a Parallax BS2. I didn't dwell on the fact that I used a PicAxe 20M2 up front to read the keyboard and create a macro that auto-typed "Parallax Expo 2012". I'll port it all over into the 20M2 pretty soon.



    printer1.jpg

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •