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CARA – High precision robot dog using rope

aaedmusa.com

141–150 of 188 posts

Re: CARA – High precision robot dog using rope

#141
post #129

Earlier quoted context omitted.

Feels like the golden age of DIY engineering

I agree 1000%, which is why I find the whole “the internet sucks now” movement really disheartening. There are huge upsides to a network this large.

DIY and "the Internet" (the web?) have fairly little overlap, aside from learning resources existing. Those learning resources could just as well exist, and probably better or more, in a healthier web. I don't think contrasting the 2 things is making much sense.

Re: CARA – High precision robot dog using rope

#142

I've watched and re-watched Aaed's videos on the capstan drive, it's great stuff. High speed, high torque, compliance, effectively no backlash. It's fascinating to watch a legit engineering mind at work.

So, Aaed was our intern last summer - and he’s the real deal. I got to work with him on some really cool bespoke robotic end-effectors and the guy has great design instincts. Picked up mechatronics skills like a sponge, grokked hamming codes in like 30sec from a whiteboard doodle. Super hard worker too, he would stay late in the electronics lab to work on the motor design for what turned out to be CARA - we had fun testing the backlash one evening and ever since I’ve been trying to shoehorn one of those actuators into a project.

Potential and active founders here should consider reaching out (i think a startup setting would suit him better than corporate research), though he’s obviously got his own stuff going on and a degree to finish!

Re: CARA – High precision robot dog using rope

#143

Earlier quoted context omitted.

i noticed recently YT has been suggesting micro-small channel(<1000 subscriber) to me, not sure if this is good thing.

The real question: Are the recent recommendations better than previously? Example: If the recommendation engine (presumably driven by some kind of AI/LLM at this point) better understands the content of videos, it can make better recommendations. If anything, it seems logical that smaller channels would begin to appear on your YouTube feed, as long as the content is highly quality and matches your interests.

It's both good and bad: Sometime it suggest some small channels about some niche topics that i found very interesting.

But i don't like how aggressive it is with suggestion. If i search some random topic, my newsfeed will be flooded with all videos about that topic many days later. So sometime i have to use different profile just to not "contaminate" the algorithm.

Re: CARA – High precision robot dog using rope

#144
post #113

Earlier quoted context omitted.

I'm more optimistic. I think filling battlefields with autonomous weapons will make humans obsolete there and reduce war causalities. Basically any attack on humans is going to be a war crime and terrorism akin to attacks on civilians russia is doing right now

Well, suppose you have two countries at war, say, Burnia and Hevonia. They each produce a million autonomous weapons. Burnia sends their million autonomous weapons to kill the million people they judge are most crucial to Hevonia's war effort, prioritizing Hevonia's political leadership and military officers. Hevonia, meanwhile, sends their million autonomous weapons to destroy Burnia's autonomous weapons, when they…

It's the same question as when one opponent is ready to nuke enemy cities while the other is not. In theory everything turns out the same way you postulate. In practice cost of winning the war in this manner might be higher then the cost of losing localized, limited conflict.

Re: CARA – High precision robot dog using rope

#145
post #112

Earlier quoted context omitted.

I'm more optimistic. I think filling battlefields with autonomous weapons will make humans obsolete there and reduce war causalities. Basically any attack on humans is going to be a war crime and terrorism akin to attacks on civilians russia is doing right now

That is a really weird take considering how hard Russia (and Ukraine) work to continue to kill humans in the same situation you are describing.

I think we are in transition period and nations are just learning that sending people to contact line is a terrible idea. People never learned things like that very fast. It often takes a generation.

Re: CARA – High precision robot dog using rope

#146

Earlier quoted context omitted.

Why would you put someone with clear talent at building stuff in charge of running a startup? He'll get bogged down in lawyers, day to day operations and growth strategies. Hire him and put him in R&D in some robotics company.

Yes but also the robotics industry notoriously has an extremely low shipping rate. So choose your bog I guess?

And some of them are military focused.

Re: CARA – High precision robot dog using rope

#148

What is the power consumption of these robots? I often wonder how limited and viable autonomous robots really are. When I look at Tesla's Optimus or Boston Dynamics' spectacular robots, how quickly do they need to be recharged?

My understanding is that those motors he uses are pretty special. And I would expect “efficient” to be part of that special. You’re optimizing for torque and accuracy per unit of mass and energy in this sort of space. I know he talked about them in earlier videos but I no longer recall the details.

Re: CARA – High precision robot dog using rope

#149

Why spend so much effort to achieve an "exact" gear ratio? Having more zeros does not equal to being more "precise". Also, I wonder how resistant this mechanism is to wear and fatigue.

Because when a real engineer puts 2 and 2 in and gets 3.8 out, it vexes them and they want to at least know why they can’t get 4. He’s trying to make a machine that does what he told it to do, so that he understands what is actually happening.
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