Angel LM

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Viewing 15 posts - 166 through 180 (of 294 total)
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  • in reply to: Few notes on our build of 2 robot arms #693
    Angel LM
    Admin

      I see! That’s very clever! Thanks for sharing 😉

      in reply to: Few notes on our build of 2 robot arms #689
      Angel LM
      Admin

        Hi Alex!
        Thank you very much for your feedback!I’ll make note of this to have them in mind for the next redesign. It is possible to see the improvements you made on Art1-Art2? I’m trying to imagine it but I cannot see it hahahaThanks for sharing the models!
        Best regards ;)Ángel LM

        in reply to: thorrobot.org #703
        Angel LM
        Admin

          Hello David,
          Sadly, it seems that the company that contacted me a year ago is not interested anymore on this project… So nowadays there is not a plan for launching a kickstarter or similar.I have thought a lot about launching it by myself or to set up an online shop to sell kits, but the investment and the legal paperwork is really beyong me haha
          Sorry for the news!Ángel LM

          in reply to: Servo Motor #705
          Angel LM
          Admin

            Hi Gyojin!
            The servo model I use is “Tower Pro MG995”
            Hope it helps!

            in reply to: Cableado THOR y home de ejes. #715
            Angel LM
            Admin

              Hola Jose,

              Como bien dices, si, hay una base para guardar la electrónica. En la primera versión no contemplé el integrar la electrónica en el diseño del robot e hice una caja aparte. Ahora mismo estoy preparando una nueva versión que espero tener lista en unos meses, con la electrónica integrada en el diseño.
              Un saludo!

              in reply to: interfacing ultratronics pro and the software GUI (computer) #717
              Angel LM
              Admin

                Hi Bassam!
                The electronics used in the current model are Arduino Mega + Control PCB (a PCB designed by me to control up to 8 motors.
                The firmware loaded in the Arduino Mega is a modification of GRBL and the commands sent to control the robot are GCodes.
                Hope it helps!

                in reply to: ERROR 20 #725
                Angel LM
                Admin

                  Hi Amjad,
                  Could you post more info about that error? A screenshot may help
                  Best regards,Angel LM

                  in reply to: Matlab software used for inverse kinematics solver #721
                  Angel LM
                  Admin

                    Hi Bassam!
                    I thought about that when I was designing the robot, but to keep the whole project fully Open Source, even the tools to design and solve had to be Open Source too. That’s why I solved it “manually” hahaha
                    Anyway, if you get some results do not hesitate to share them with us! 🙂

                    in reply to: Issue moving the Thor Robotic Arm #733
                    Angel LM
                    Admin

                      Hi Brett,
                      First of all sorry for the late reply!
                      It sounds to me like that the current received by the steppers is not enough to move them and/or the acceleration of the steppers is too high. Try to give more current to the steppers (if you are using A4988 drivers there is a small potentiometer to tune the output current). If you have tunned the speed/acceleration parameters try to get them back to the default ones.Also check that the 12V power source has at least 5A-7A of current, otherwise the motors may not receive enough current to move the robot.
                      Hope it helps!Angel LM

                      in reply to: Cableado THOR y home de ejes. #711
                      Angel LM
                      Admin

                        Revisando cosas que tenía pendientes, he visto que el archivo fuente de la pieza Art23Optodisk se subió en 2017 jajajaja
                        Por si aún lo necesitas y no lo has encontrado, está aquí.
                        ¡Un saludo!

                        in reply to: A connection problem between Art3 and Art4. #767
                        Angel LM
                        Admin

                          Hi D.B Ko!
                          Thanks for sharing with us photos of your Thor! It looks impressive! 🙂
                          Regarding your questions:
                          Art3&Art4 Union: There are a piece called Art4BearingRing and other one called Art4TransmissionColumn. You will need to insert 30 small balls (Diameter 6mm) between this pieces trough the small hole placed in one side of the Art4BearingRing piece. I have used 6mm airsoft balls and it works very well. I know that is not the same version (is the one that is not already tested) but I did an animation of the assembly that you can check here. As almost all pieces are very similar I think it would help you in the assembly.
                          PCB Power supply: 12V/3A will not be enough to bring power to the 7 steppers of the robot. I’m currently using a power supply of 12V/7A and it seems to be enough.

                          Hope it helps!

                          in reply to: Bearing between Art4BearingRing and Art4TransmissionColumn #763
                          Angel LM
                          Admin

                            Hello Matthieu!
                            First of all, thanks for your words about this project! 🙂
                            Answering your question: Yes, the upper part is only connected with the bottom one using the 3D printed bearing. To be honest, when I designed it I was a little bit worried about the maximum load this 3d printed bearing can hold, but as I did not find a cheap commercial solution I tried and it worked. To be honest, I did not make a proper study about the forces acting on the bearing or a simulation to see the limits of this configuration.
                            Hope it helps!

                            in reply to: Developer Branch or Design Update Branch #769
                            Angel LM
                            Admin

                              Hi John!
                              The Developer branch is the safest one, it has the tested design and it works!The other branch, “Design Update” was created by me time ago and contains an updated design that I didn’t test yet. If someday I’m able to test it and it works, I’ll merge it to the Developer branch.
                              So, you are in the right way!
                              The extra motor you noticed is used in the 2nd articulation, that uses the force of 2 geared motors to move.
                              Hope to see photos of your Thor soon! 🙂

                              in reply to: Thor beginner question and connection #759
                              Angel LM
                              Admin

                                Hi Tim!
                                First of all sorry for the late reply, I didn’t receive the notification of this group…
                                Your project sounds cool and I think that it could be achievable, but be careful about times! Building a Thor takes time: gather all the components, build it and test it can take months… If it is not a problem for you, go ahead!
                                Thor uses GCodes sended by serial to move, so technically your bluetooth implementation is possible. I think that the only extra thing that you’ll need is a bluetooth adaptor for the Arduino Mega or another board with bluetooth connection that can send the commands via serial usb to the Arduino Mega (Something like an Arduino Uno with a bluetooth adaptor connected by serial to the Arduino Mega).
                                The comunication for the movement is something between real time and sequence. In the moment you send a movement command the robot will start moving to the target position, but if the robot is moving when you send a movement command it won’t execute that command until it finishes the previous one.
                                Hope it helps!Angel LM ;

                                in reply to: Cableado THOR y home de ejes. #709
                                Angel LM
                                Admin

                                  Hola Shelmak!
                                  Antes de nada, perdón por la tardanza en contestar, no me han llegado las notificaciones de este grupo…
                                  Voy contestando tus preguntas por partes!
                                  Lo de los cables, yo he conseguido pasarlos a través del eje sin problema… Seguramente estén liados y con cada vuelta que da se lian más, peor no encontré una buena opción para esto. Lo de las interferencias la verdad es que no lo tuve en cuenta y me preocupó al principio, pero después de probarlo y ver que todo iba bien supuse que no era un tema tan crítico.
                                  No sabía que la fuente de la pieza Art23Optodisk no estaba subida al github! La subo en cuanto pueda!
                                  Por último, el eje 6 es el único que no hace homming, no se orienta. Traté de pensar muchas maneras para controlar la posición y lograr establecer un inicio, pero no encontré ninguna solución. ¡Cualquier idea es bienvenida!
                                  Por lo que veo tenéis un proyecto muy interesante entre manos! A ver si nos dejais echarle un ojo a una fotillo o video pronto 😉
                                  Un saludo,
                                  Angel LM

                                Viewing 15 posts - 166 through 180 (of 294 total)