• Updated Design with Grips

    Garrett Herschleb • 08/29/2015 at 13:55 • 0 comments

    The grips are based on 3/4" aluminum square tubes. The predicted squeeze strength is around 40 pounds.

    What about safety? Using PyUltimateRobot (see that Hackaday page), one can limit maximum force of any component of any movement. For example, you can program the robot to never use more than 1 pound of force unless explicitly commanded as needed for a particular movement.

  • Bearing Guides Made and Design files complete.

    Garrett Herschleb • 11/30/2014 at 22:12 • 0 comments

    I've finished making the bearing guides. They turned out well.

    I've also updated a uploaded a lot more files into the dropbox area.

    The design files are fairly complete now -- at least to the point that one could duplicate what I've done so far. I'm sure more revisions will follow as paper hits reality.

  • Updated Design With Aluminum Elbow

    Garrett Herschleb • 10/27/2014 at 00:45 • 0 comments

    I updated the design to use an aluminum framework for the elbow. Check it out with the new picture, and updated design collateral.

  • Bill Of Materials updated

    Garrett Herschleb • 10/09/2014 at 13:27 • 0 comments

    The BOM spreadsheet and the template drawings have been updated to reflect the latest crane lifter design change.

  • Added the plans for the vertical lifter assembly

    Garrett Herschleb • 09/30/2014 at 03:59 • 0 comments

    I added to the 3D object drawings the lifter assembly with the powerful Banebot motor.

  • Crane assembly design change

    Garrett Herschleb • 09/28/2014 at 00:05 • 0 comments

    I've found that the current design for the crane axes were a little rickety (even with all that metal) and presented manufacturing difficulties.

    So now instead I've adopted an MDF-aluminum composite that will be much easier to make and more solid without increasing BOM cost.

    See the 3D rendering of the new design.

  • Current state of development

    Garrett Herschleb • 09/22/2014 at 02:05 • 0 comments

    I have finished the base (not shown in the cover diagram), the crane assembly, the wrist azmuth, the write declination.

    I am currently working to finish the wrist rotation.

    Things left to do:

    1. Grip

    2. Integrating the lift and extension motors and drives (partially finished)

    3. Motor driver / sensor boards (1 complete as proof of concept, 7 more to go)