Відео

I can’t tell if bro invented a new type of ASMR or torture

Have you tried using the digital output? (I2C)

Thank you very much for this video. I didnt know, that for use Output pin is necessary connect VCC and GPO pin. Now it working well.

UA-cam randomly recommended it to me and it looks so funny. Actually kind of sick.

What in the freaktron 2000 did you just make Dr. Diddy?

I hate it when my robotic finger touches me

i dont know what this is but you need to stop and get therapy

weirdo

so creative!! this just made me smile 😂❤

thats awesome dude

how strong is it? Can this be used to lift things?

One of your main issues with your assembly is rigidity. Your improved tensioning system has assisted in this, but the material and shape of the arm itself is doing you few favors in that regard. The V3 pulley assembly itself is tall, but immediately connects to a significantly thinner arm section. While you get enhanced leverage, you also end up with an underbuilt arm connection for said leverage. Inherently speaking, the larger the arm, the more weight you sling around AND the larger moment of inertia, both working against you. Solutions: 1. optimize models -> cut weight on the arms and pulleys, lowering moment of inertia and weight to improve responsiveness, ease of control, and stability. 2. improve arm moment of area -> in the same way an I-beam gains efficiency per weight in terms of preventing bending, you can make your arm geometry more efficient for a specific axis, improving its efficacy in certain directions. Your rectangle setup works, but could be improved for additional effectiveness 3. supplement arm leverage -> Your arm segments are acted on by the small connector at the end of the pulley. To improve stability, consider extending that connector's length and rigidity. Additionally, you may consider using a wire assembly outside of your pulley to act as another method of rotation transfer, similar to what you have already, except arm segment to segment instead of assembly to assembly. I'm working on some files for you, but I need the following: 1. diameter of wire sheaths 2. length and diameter of your bolts (I use M4x6x6 threaded inserts and 12mm grub screws, for example) 3. pulley diameter 4. arm segment width and height 5. pulley connector dimensions (the part that slots into the next arm right at the end of your pulley) As of now, I have ideas for improved generic arms (similar in function to yours, with weight savings that hopefully lead to improved responsiveness and lower slop), as well as specialized arm geometry (larger footprint than your current ones, pick based on the arm section's purpose) for lifting type loads (alongside the pully direction, such as for when your arm goes up and down a lot or needs to move a heavy object), torquing loads (forces that do not line up with the pulley but instead try to twist the joint sideways, like if you extended your finger and then pushed against the side of your nail), and both (essentially just a larger arm segment with good geometric stability). Your pulley assembly is mostly fine, I have yet to investigate its internal wire pathing to see if sharp corners exist, but other than some weight savings you can add, the pulley seems alright. The fork is less than ideal for stability, but you lack good options without increasing the footprint significantly, and/or utilizing larger connections at the rotation points.

Excellent! The improvement from the larger pulleys is obvious. Well... it is now you have so clearly demonstrated it! 👍 😜 How are you going to explain the bruising and lacerations on the hospital A&E admission form? 🥴 Looking forward to future iterations... Like & Subscribed.

Thank you.

great job. cheers from Saudi Arabia.

Here to see your most up-to-date progress on this. If you wish for a use case, I'd suggest looking into ways to transfer human scale movement into smaller scales. If you have a miniature arm with a gripper, for instance, then a full scale one that you wear, so long as you do not twist your arm too much, you can significantly increase the precision of your movements. This can have benefits when drawing (replace gripper with pen), precision assembly, etc. Just be sure to make the pulley ratio the same (else your 90 degree arm rotation could transfer to multiple full rotations on smaller pulleys at the other end). If you scale things down, consider using a bolt with fishing wire wrapped around it, simply wrap the excess slack around a small bolt and screw it down, that will remove the tension and secure the wire. I have not looked into its creep factor, however, which may be a concern.

Something to note: you do not appear to have any fillets in your parts. The pulleys especially suffer from this. Fillet the ends for what amounts to free additional durability, as those sharp angles are going to lead to stress concentrations. Also, your wire force appears to go mostly into the channel walls or into the tensioning area, this will lead to rapid wear and induce failure under high loads, as the majority of your pulley surface is not utilized, also having sharp turns in your wire where they transfer forces inside that pulley will lead to fatigue. Instead of this, try to get friction across the wire length, such as perhaps with an outer disc on your pulley that can have its radius reduced. Also consider using a helical structure instead of a flat pulley, though be warned that shrinking this structure is easy (and works well due to exponential friction with multiple windings on the pulley), but will cause rapid fatigue of steel wire if the radius is too small, be sure to not go below the minimum pulley radius for your wire diameter, and consider using string with a low stretch factor instead to shrink your transfer pulley as the wire is not the limiting strength factor in your design. Edit: upon reading another comment, you mentioned that shrinking your pulley makes the tension mechanism hard to fit. Consider raising the height of your pulley with a second portion that you can rotate independent of the first. This "upper" portion of the pulley will be able to hold the wire ends. You can attach the wires, then twist the upper portion and glue to the main pulley, holding the tension. I find that hot glue on PETG works well, use some glue channels on the tension pulley for a flush fit.

You have action at a distance, now throw a ghost on the end for *spooky* action at a distance.

Exhaustion from Fighting the fickle finger of fate ? ❤

Dystopian-esque

I’m not dirty minded, I’m not dirty minded, I am dirty minded 😭

Art hmmmm na mental illness mm yea

pure retardium

Wtf!😂

Controlling chaos… fight on. 💪

holy effin shhhh! what an amazing video! keep 'em coming! just discovered your channel and I love it!

Always striving ❤

👏👏👏❤️

Ok cool but I think you can offset that with smaller pullies in more of cherry block system You might also line the rolling joints video Rolling contact joints Rolling joint gives different kind of vid lol

Shadow play❤

I would be curious if bicycle shifting cable housing could work even better? The shifting housing has an inner lined tube for low friction and then the outer wall has small, stiff wires embeded in it running the length. The shifter housings are very stiff as opposed to brake cable housing which are made to squish down a bit to reduce the bite of the brakes. Bought in bulk, I wonder if the cable housing could be cost-effective too? Neat project! And it's fun to see the evolution of it!

Super nice project, thumbs up and keep us on par.

This is amazing! That seems to work really well. Shame that human arms have so many degrees of freedom, I kinda wanna see (or make if I had the time) one that could copy a human shoulder+elbow+wrist and do some juggling exercises..!

Seeker. ❤

Cool description and demonstration ❤️

Stranger in a strange land ❤

He's going to trip get hurt

And the fight goes on❤

Reaching for freedom? Or just contemplation.❤

Onward and upward💪

Fighting the good fight💪❤️

Facing danger bravely 👏💪

Art lies in the eyes of the beholder, but sometimes there's just nothing to see.

That looks like something else

Keep fighting the good fight💪🤜💥

what?...

He’s baaaaack 😮

Wtf 😂

I found your video while trying to figure out why the default analog output mode wasn't giving me an output. Pulling gpo high sorted me out. Thanks.

....effective but,not strong enough..!