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About oracid

  • Birthday 08/01/1953

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  1. oracid

    The Robot Solving Maze

    I would only say one thing, "bravo" !
  2. oracid


    Like me, I hope you will enjoy this link. https://blog.arduino.cc/2019/09/27/this-lego-linkage-walker-wanders-under-arduino-control/
  3. oracid


    Thank you.
  4. oracid


    To day, a new version, still bigger than the previous.
  5. oracid


    Here is my new version of FiveBarQuad which is bigger.
  6. oracid


    I am pleased to show you my last video about a new quadruped based on 5 bars linkage.
  7. oracid

    Lego Exhibition Turntable

    Thanks to you. Let me show what you have done when posted.
  8. Thank you. Yes, I program PlumQuad to stay on the workbench borders, but it is very easy to change it. Here, the goal was to test the 35kg.cm servos for a big quadruped. I am aware about the rough kinematic, that why I have a slight disapointment in the video. I don't really understand why the right side legs don't lift. When I put the quadruped on a stand, every looks good. To make a good kinematic it takes a lot of time and I am already thinking about an other project. Nevertheless, if somebody give me the good values table, I will appreciate. To see the program, it is better to go to full screen.
  9. In this video, I use RC servos with Arduino Uno to make a big Lego quadruped. I am aware that the kinematic is not very good. I hope next time I will do better.
  10. oracid

    Mindstorms One Kit Builds

    Very good walker with a good kinematic.
  11. The Geek KittenBot servo has not very good 3D alignment with Lego, but you can adapt it easily. In this thread, https://www.eurobricks.com/forum/index.php?/forums/topic/169482-brick-compatible-kame-quadruped-robot/ you can see how I made a Spider Bot with this servo. In the video, at 2'02", you can see 1/4 yellow bush that I made cutting the 1/2 bush, https://www.bricklink.com/v2/catalog/catalogitem.page?id=866#T=S&O={"iconly":0} To do that, you hold this bush between two fingers and pass it on a little saw blade. Don't hesitate to ask.
  12. May be something like in this video. https://youtu.be/N8iDY9oTMig
  13. Thank you very much. In this video, https://www.eurobricks.com/forum/index.php?/forums/topic/169482-brick-compatible-kame-quadruped-robot/ I use a program that you can find here, https://github.com/oracid/Easy-Quadruped-kinematic Some ones tell me that this program is not easy to understand and I have to write a new one more readable but with the same goal. In this program, the servo move degree by degree with a fixed lapse time between 2 degrees. By changing this delay, you can do acceleration and deceleration. In my next quadruped, which I hope is coming soon, I am not interested about changing pace. My goal is to make a bigger one and nowadays I fight with servos torques. That is why I made this video. But one day I will go to interest about this. It is exactly the same with an EV3. Believe that the EV3-G langage is like the C langage. Do you have any project ? Tell me about it.
  14. In this video I show a new mounting for RC servo 40x40x20 and how to make a walking robot articulation.