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    Complex rotations with robot arms not working

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    • N Offline
      North2001 Newcomers
      last edited by

      Trying to animate a 6 axis robot rotation and when I put 2 or more rotations together the components start rotating around completely different axis' and going all over the place. Any help is much appreicated

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      • Rich O BrienR Offline
        Rich O Brien Moderator
        last edited by

        Are you using Kinematic Constraints so the child follows parent?

        Download the free D'oh Book for SketchUp πŸ“–

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        • N Offline
          North2001 Newcomers
          last edited by

          I have the model in Groups, so the whole robot is a group and then the components are in subsequent groups inside the main group. I have done it the way I saw a youtuber group robot arms

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          • Rich O BrienR Offline
            Rich O Brien Moderator
            last edited by

            Try it with Kinematics. Fredo has a video on his channel that covers it.

            Download the free D'oh Book for SketchUp πŸ“–

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            • N Offline
              North2001 Newcomers
              last edited by

              Just tried using Kinetics and I can't get it to work either as kinetics are always on but as I have 6 different movements that all need different constraints it isnt working. I have also tried turning them on and off when I need but that doesn't seem to work either

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              • ntxdaveN Offline
                ntxdave
                last edited by

                Have you looked at Animator? It will allow you to animate groups and subgroups at the individually.

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                • N Offline
                  North2001 Newcomers
                  last edited by

                  Yes that's what I was doing before looking at Kinematics. I have sort of learned that its good until there's too many movements with rotation's which is what I'm finding here and didn't know if anyone had come across the same issue and solved it

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                  • Rich O BrienR Offline
                    Rich O Brien Moderator
                    last edited by

                    @ntxdave said:

                    Have you looked at Animator? It will allow you to animate groups and subgroups at the individually.

                    I'm presumed it was a question about Animator as it is asked in Animator forum.

                    The strategy of grouping everything to inherit the parent group move can result in unwanted results. Kinematic Constraints added to the MASTER then the SLAVES can move as desired.

                    Download the free D'oh Book for SketchUp πŸ“–

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                    • ntxdaveN Offline
                      ntxdave
                      last edited by

                      Interesting. Is there a link to a kinmetric plugin? I did not see on in this forum.

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                      • Rich O BrienR Offline
                        Rich O Brien Moderator
                        last edited by

                        @ntxdave said:

                        Interesting. Is there a link to a kinmetric plugin? I did not see on in this forum.

                        Animator has a Kinematic Constraint feature...

                        https://i.imgur.com/2YVGeIQ.png

                        ...with various methods to apply it

                        https://i.imgur.com/b95YE0f.png

                        There is no separate plugin needed

                        Download the free D'oh Book for SketchUp πŸ“–

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                        • ntxdaveN Offline
                          ntxdave
                          last edited by

                          Thanks, Rich. I cannot do anything any more and did not remember that. I need to go educate myself about kinematic (like what the heck it really is/what does it do).

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                          • Rich O BrienR Offline
                            Rich O Brien Moderator
                            last edited by

                            Basically its a chain. If A moves tell B and C to follow it but keep their position in relation A the same (unless instructed differently).

                            Same principle when you drink beer.

                            Download the free D'oh Book for SketchUp πŸ“–

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                            • ntxdaveN Offline
                              ntxdave
                              last edited by

                              @rich o brien said:

                              Same principle when you drink beer.

                              DUH! πŸ˜„

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