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Here's next week's video, early for Patrons. This one goes out publicly on Tuesday 4th Oct.

I think there are more applications for this type of assembly - albeit with more stages.

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I found video from Akiyuki Brick Channel with a very interesting looking LEGO tentacle assembly. It looks like it has quite a lot of motion, and it only has four motors. Each motor controls a stage of the machine – driving what is essentially a turntable, but with each motorised part set at 45 degrees. Based on the combination of each rotary section, the tentacle is able to do some quite interesting motions as it reconfigures itself. There are lots of other really great builds in this channel, so you should check it out. A similar mechanism has been used in the Rolls-Royce LiftSystem to thrust vector thrust a jet engine, and you can check that article out on Wikipedia. I’ve built quite a few walking robots, but I really liked the way the tentacle moved, so this made me think about whether I could make robot legs that worked in a similar way, and how easy it would be to control them. Allen Pan: https://www.youtube.com/watch?v=1SgGfMlbCoM Akiyuki Brick: https://www.youtube.com/watch?v=fSMC4tfOqHM You can support me on Patreon or buy my Merchandise: *************************** Patreon: https://www.patreon.com/xrobots Merchandise: https://teespring.com/stores/james-bruton *************************** Affiliate links - I will get some money of you use them to sign up or buy something: *************************** Matterhackers 3D printing supplies: http://www.matterhackers.com?aff=7500 Music for your YouTube videos: http://share.epidemicsound.com/xrobots *************************** Other socials: *************************** Instagram: https://www.instagram.com/xrobotsuk Facebook: https://www.facebook.com/xrobotsuk/ Twitter: https://twitter.com/xrobotsuk *************************** CAD and Code for my projects: https://github.com/XRobots Huge thanks to my Patrons, without whom my standard of living would drastically decline. Like, inside out-Farm Foods bag decline. Plus a very special shoutout to Lulzbot, Inc who keep me in LulzBot 3D printers and support me via Patreon. HARDWARE/SOFTWARE Below you can also find a lot of the typical tools, equipment and supplies used in my projects: Filament from: https://www.3dfuel.com/ Lulzbot 3D Printers: http://bit.ly/2Sj6nil Bearings from: https://simplybearings.co.uk/ Lincoln Electric Welder: https://bit.ly/2Rqhqos CNC Router: https://bit.ly/2QdsNjt Ryobi Tools: http://bit.ly/2RhArcD Axminster Micro Lathe: http://bit.ly/2Sj6eeN 3D Printer Filament: http://bit.ly/2PdcdUu Soldering Iron: http://bit.ly/2DrNWDR Vectric CNC Software: http://bit.ly/2zxpZqv Why not join my community, who are mostly made up of actual geniuses. There’s a Facebook group and everything: https://www.facebook.com/groups/287089964833488/ XROBOTS Former toy designer, current YouTube maker and general robotics, electrical and mechanical engineer, I’m a fan of doing it yourself and innovation by trial and error. My channel is where I share some of my useful and not-so-useful inventions, designs and maker advice. Iron Man is my go-to cosplay, and 3D printing can solve most issues - broken bolts, missing parts, world hunger, you name it. XRobots is the community around my content where you can get in touch, share tips and advice, and more build FAQs, schematics and designs are also available.

Comments

Steve Martin

As this is similar to how a millipede or centipede moves would any change in direction come from some form or articulation in the body rather than the legs?

Pete Mertz

I probably missed the answer, but why servos rather than a stepper or a geared down DC motor?

XRobots

Servos are a geared down DC motor ;-) It's a lot easier to use servos than steppers which would need homing on each power up.

Pete Mertz

Neat! Thanks for the knowledge! I always figured a servo could only go a limited range, i.e. you couldn't use it for a wheel or something because it would only go to 360 degrees and then have to go backwards to get to like, 15 degrees. Learning is fun!

the AC

Very tongue in cheek

Anonymous

have you done any testing with more segments?