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Documents Episode 474: Continuum Robot Tentacle Prototype
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Author: kellyhensen
Date Created: 18 Nov 2020 9:12 PM
Last Updated: 2 Mar 2022 6:01 PM
Views: 893
Likes: 10
Comments: 11
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Episode 474: Continuum Robot Tentacle Prototype

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They say that nature doesn’t use wheels, so if we want to get organic movement out of a robot, perhaps we should use organic actuators, no? While this build doesn’t have muscles per se, it does have tendons that allow for more flexible motion that we don’t typically find in robot arms. Tentacle robotic mechanisms have been around in Hollywood special effects for years, but they don’t show up in hobby builds too often. Join DJ on his robot journey as he builds a continuum robot arm that will finally allow him to catch that wiley spider-man.

Bill of Materials

Product Name Manufacturer Quantity Buy KitBuy Kit
Arduino Mega Arduino 1 Buy NowBuy Now
10K Ohm Linear Potentiometer Bourns 3 Buy NowBuy Now
5V 3A Power Supply Proj-Elic 1 Buy NowBuy Now
PLA Filament Verbatim 1 Buy NowBuy Now
DC Barrel Jack Adapter OSEPP 1 Buy NowBuy Now

 

Additional Parts:

Product Name

(2x) Standard Servo

Micro Servo

(10x) 3mm Universal Joint

Attachments:
Continum Robot_Resources.zip
element14 presents
Continuum Robot Tentacle Prototype

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Anonymous

Top Comments

  • aspork42
    aspork42 over 1 year ago +2

    Nice build! I've seen these built which use 'segments' Each segment may only be 2-3 discs long, and has its own set of servos. The segments can be controlled independently. To run the kevlar string to…

  • DAB
    DAB over 1 year ago +2

    Great project.

     

    I have seen similar designs before.

    Yours worked OK, but as you found out, you need many more motors/servos within the arm if you want more robust movement and control.

     

    DAB

  • beacon_dave
    beacon_dave over 1 year ago +2

    Just need the airbrush now

     

    Spine Robotics 1985 promo video

    Spine Robotics Promo 1985.mpg - YouTube

  • mrvolt
    mrvolt over 1 year ago in reply to krishshah123

    Hi Krish,

     

    You can find the CAD files in a step format attached above.

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  • krishshah123
    krishshah123 over 1 year ago

    Where can I find the STL files to print this project?

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  • airbornesurfer
    airbornesurfer over 1 year ago

    Go-go gadget robotentacle?

     

    I smell an ill-advised mashup!

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  • mrvolt
    mrvolt over 1 year ago in reply to kmikemoo

    Haha, all robots need flexy arms!

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  • mrvolt
    mrvolt over 1 year ago in reply to aspork42

    Thanks James!

     

    You should try to build your own There are far better designs than mine out there that are 3d printed for easier assembly.

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  • mrvolt
    mrvolt over 1 year ago in reply to DAB

    Thanks DAB,

     

    Yes, very much so. This was a first test to get a sense of this kind of design and I certainly learned a lot more than most of my research into these designs.

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  • mrvolt
    mrvolt over 1 year ago in reply to beacon_dave

    Ooh yeah, what an awesome video!

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  • beacon_dave
    beacon_dave over 1 year ago

    Just need the airbrush now

     

    Spine Robotics 1985 promo video

    Spine Robotics Promo 1985.mpg - YouTube

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  • DAB
    DAB over 1 year ago

    Great project.

     

    I have seen similar designs before.

    Yours worked OK, but as you found out, you need many more motors/servos within the arm if you want more robust movement and control.

     

    DAB

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  • aspork42
    aspork42 over 1 year ago

    Nice build! I've seen these built which use 'segments' Each segment may only be 2-3 discs long, and has its own set of servos. The segments can be controlled independently. To run the kevlar string to each segment, you have to run it through something like the cable jacket used on bicycle brakes; so it won't compress. You land the cable jacket at the first disc of the segment.

     

    I'm super jealous of this arm! I want one!

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