Wednesday, June 6, 2012

Mobile Skid-Steer Arm


This is my entry into the unofficial NXTLog Mobile Arm Building challenge that me and a couple of other NXTLogger's started. It wasn't as big as I would have liked it to be but due to the amount of parts I have I couldn't make it bigger. Basically it is a moving arm that can drive with two motors and lift and grab with the other giving it an extra dof (degree of freedom). The chassis (pictured below) was built strong to support the skid-steer drive which if not built properly would have bent the axles.


The grabber/lifting mechanism (pictured below) was designed to first grab something then lift it a few inches off the ground. I geared the lifting mechanism down so that it could pick up heavier (approx. 1.5lbs) objects.
I could probably explain how this works in a lot more detail but that is why I made the video. Enjoy!

Stay tuned for some awesome projects coming this summer!

19 comments:

  1. Awesome project! This being for NXTLog, do you have a different video on there? Last time I used it, I don't think we were even able to embed YouTube videos on the project site, nor link to other web pages (like this blog post). Are those restrictions still here?

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    1. Thanks! I used the same video I just didn't embed the youtube video on there I just put it on directly from my computer, They won't let you link to posts because they want to make it a kid friendly place and so they don't ruin there name (I guess). so yes I guess the restrictions are still there. :)

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  2. Yes I saw this on the log It was No1 at one point! Great project and well done!

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    1. Yes it was no. 1 for quite awhile. Thanks for your compliments :D

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  3. Good work.
    The first claw I made was very similar. Now I've made a more compact one that lifts objects vertically. However that mechanism took me months to think off. The robot you made is quite strong 250g.

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    1. Thanks! I think that I will try making a better one in the future, but for know I will have to finish my current project :) Thanks for the comment :D

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  4. What extra parts does it need, compared to either of the standard kits?

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    1. One extra 40 tooth gear. Thanks for the comment! xD

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  5. I need to make a grab and lift robot better if its simpler than this one can someone please show me one but with the 1.0 nxt i need it urgently contact me to juampiep@gmail.com please

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    1. OK I got your email I will email you back.

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    2. I need to make a grab and lift and track line 2 sensor with the 2.0 nxt
      (I'm not good at English.)
      I need how to ...

      contact me to wattana.kp@gmail.com please

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  6. Hello,
    Have you got building instruction of your model or LDD model ?
    I want to build it with my student (12 years old)
    and after they can make the program.
    You can post your answer here :
    technomer_rc@hotmail.fr
    Thanks

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  7. awesome:)

    is it possible to get the building instruction for this one?

    best regards, Hans

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    1. Sorry this has already gone to the Lego graveyard.... Thus I can not make building instructions.

      -nxtstep101

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  8. can you please give the building instructions

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    1. Sorry, I didn't make any. And I already took it apart.

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  9. por favor me podrias mandar el pdf max-x1@hotmail.com

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    1. Desculpe eu não fazer todas as instruções para isso. :(

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  10. Simple but great model. Thanks for the video. I learned a new mechanism from this model !!!

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