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Another smart bolt: https://smartbolts.com/

After reading the title, it reminded me of a high-tech bolt. I thought people were making even bolts more complicated, gradually finding ways to monetize them by integrating ads or unnecessary technology. Even bolts are becoming harder to use. It’s surprising to see that tractors are becoming less tech heavy now, as people prefer more usable and easy-to-repair technology again. MAKE ANALOG GREAT AGAIN(MAGA)!

SMART BOLT TECHNOLOGY:

https://smartbolts.com/

https://imbu.nl/projects/smartbolt/


These days YouTube has so much AI generated music, very hard to differentiate from originals. For examples look at these YT channels uploading AI generated music:

https://www.youtube.com/channel/UC6Xw8Jrwf009nHTV165UuQw

https://www.youtube.com/@ForeverDisco80s/videos

https://www.youtube.com/watch?v=MQn7ZUixKXg&list=RDMQn7ZUixK...

https://www.youtube.com/watch?v=WUph_6i5Pr0&list=RDWUph_6i5P...

so on..I think uncountable amount of AI gen stuff is uploaded to YT everyday


Yup, a lot of these AI songs are just plain good: https://youtu.be/nwBDmUdX8Io

If you heard these on the radio while working at a grocery store in 1983 you'd be begging your local music store to sell them to you.

To me this AI-generated "slop" is much more enjoyable than human-generated slop: https://www.youtube.com/watch?v=HPAg7ODubB4

Where "slop" = "what can I put out that I don't love but that people will click on?"


Sorry, but that music is really boring. I certainly would not have bought it in 1983. But, you're right that the average person on the street probably can't tell the difference.

Music out there in the real world runs in clusters and communities that form around real world places where people go to be together and make and share things. Its so much more colorful and interesting than you can imagine. But, it is admittedly just a small slice of the weirdest and most creative and crazy people who participate in those communities. For everyone else music is just a recording that appears out of thin air in their car stereo without context and the glossiest product is the one they pick.

What do you think of this?

https://youtu.be/5KszaGOsFR8?si=YVorLTuTMr7jjAvY

Or this? https://youtu.be/pdEmM79MRmU?si=CMGkWs6CyZxXyVaH

Or this?

https://youtu.be/Bdzt39vX1Sw?si=06NNB4m0xuB7Lcbl


Metrology, mechanical and materials science engineering, manufacturing and tool engineering, precision engineering, and electrical and electronics engineering, combined with being a generalist and having one specialization in physical or hardware engineering along with computation.

As people often say, matter, energy, and information are the fundamentals of everything. I think we need mathematics, analytic philosophy, the arts and humanities, and physics too. Sorry we need every skill. /s


> Metrology, mechanical and materials science engineering, manufacturing and tool engineering, precision engineering, and electrical and electronics engineering, combined with being a generalist and having one specialization in physical or hardware engineering along with computation.

Now how does one get that if they aren’t an 18 year old in college with years and gorillions of dollars in government money to blow on an EE/CE program.


The most enlightening part of learning is finding our own unknown unknowns.

For me it is different, making a best piano in the world is different from composing like Beethoven. Well what I am saying, learning unity is doable but what you do with it is most important. Back then I used to think learning photoshop, paint tools makes me artist, but I have realised being artist is actually faraway being from tool operator.


Sorry for going off topic. "Electric Motor Scaling Laws and Inertia in Robot Actuators" by Ben Katz who designed the MIT Mini Cheetah in 2018 is very well known in the legged robotics community. His master’s thesis on actuator design is also widely referenced.

During the COVID period, some Chinese companies even sold variants of actuators inspired by the Mini Cheetah design.

Aaed Musa has also mentioned in some of his videos that his actuator designs were inspired by the Mini Cheetah actuator. Yes, His capstan drive video is especially impressive.

For example, in Aaed Musa’s video "I Built a Rubik's Cube Solving Robot" (https://www.youtube.com/watch?v=m0bMMALYMYk), he states in the description that the design was inspired by Ben Katz’s work.

Ben Katz master thesis, is worth reading: "A low cost modular actuator for dynamic robots" 2018 https://dspace.mit.edu/handle/1721.1/118671 and also has a good post https://robot-daycare.com/posts/2019-12-16-the-mini-cheetah-...

And also, The Rubik's Contraption (2018), 297 points, the work done by same author https://news.ycombinator.com/item?id=16561049


I did a bit of a deep dive into motor control and actuators in building a two axis gimbal for tracking satellites with an RF antenna (with the eventual goal of building a mount for optical tracking).

Ben's vids were kind of mind-blowing for me at that time. I couldn't believe some of the control that was possible with relatively pedestrian electronics. Aaed's vids do a wonderful job of making it accessible in an applied way.

It's something I think a lot of the folks on HN would find interesting to tinker with. Nice mix of software and hardware that actually does work in physical reality. It also gives me a level of appreciation for the advances in humanoid robots that I don't think I would have had otherwise. (If you *do* get into it, I'd highly recommend getting into field oriented control with brushless motors and encoders. Small hobby servos are fun but they encapsulate a lot of the interesting parts and tend to have limited options available for things like the capstan vid linked above)


Adding to the original post, yes, a lot of things are free now. Sometimes I feel overwhelmed by the sheer amount of resources available on the internet. At the same time, many topics turn into deep rabbit holes if you look closely enough.

For example, I never realized how much there is to learn about something as simple as a bolt. To me, it was just a cylinder with helical grooves. Then I watched the video “Life of Bolts” on YouTube and was amazed by the number of steps and processes required to manufacture a high-precision, high-performance bolt for a Formula 1 car. Another eye-opening moment was watching “Origin of Precision.” It completely changed the way I look at everyday objects.

Once I started digging deeper into bolts, I discovered how many fields are connected to making them: materials science, process engineering, manufacturing engineering, metrology, precision engineering, and more. I have even come across PhD theses focused on bolts, O-rings, and seals. One time I found a technical paper on O-ring modeling from NASA’s technical server, and it was full of complex partial differential equations. It honestly surprised me how much knowledge and effort go into designing and producing things that seem so simple.

It makes me realize that the biggest bottleneck in learning anything deeply is mathematics. At the same time, you also need some philosophical grounding to ask the right questions, along with the willingness to learn and apply knowledge in the real world.


TL;DR:

Minimize negative(painful) notions as much as possible, ideally approaching zero, while maximizing positive (pleasurable) notions.

Minimize negative(painful) notions: Uncertainty, Risk, Chaotic behavior, Randomness, Non-deterministic, Instability, Cost, Energy losses, Time consumption, Resource usage, Excessive complexity, Failure modes, Noise

Maximize positive(Pleasure) notions: Reliability, Efficiency, Deterministic, Predictability, Precision, Accuracy, Verification, Validation, Safety, Stability, Simplicity (lower complexity), Robustness, Redundancy


I can think of a few SaaS products in the document scanning and OCR space whose UIs are not efficient or simple, while being time consuming and, to my mind, chaotic.

There should be an Akin Exit Clause from said 3-year contracts. They have zero incentives to fix or improve _anything_ during those years of servitude.


I search for nano positioning stages. I didn't get much on that. BTW, great work. Keep it up. UI looks so good.


Thx :) Will try to make it more precise


Off-topic and a stupid question: why does anything related to Apple attract so much attention on HN? As a newcomer, I assumed HN focused mostly on reverse engineering,retro computing, and deep technical topics.


Tech stopped being full of tech nerds when 10 weeks in a JavaScript boot camp and a few thousand lines of code in your personal GitHub would land you a $140k remote job.

Maybe now we will start seeing a reversion to the people in it for the passion.


Imagine what tech will look like when you don't even need the 10 weeks in a boot camp, just a subscription to Claude.


I would not say your list is anything like complete, although those topics are often discussed here. Apple is a huge player in the general computing ecosystem, and probably a majority of front- and back-end developers these days work on macbooks, so it isn't surprising that the things they do resonate in this community.


Apple offers the most convenient computing experience available to mankind as of right now. That's why I care, at least. I love their products and services, but not so much when it fails (as in the authors case). That shit is scary.


HN hasn't focused on those topics in a long time, they rarely are on the front page. Skip the top 20 articles and you'll start to see some interesting content instead of all the VC & AI drivel.

Hackaday is a content aggregator site that usually has more content on these topics - https://hackaday.com

Or there are still some good old blogs out there with RSS feeds http://www.righto.com/ http://oldvcr.blogspot.com/ https://blog.ret2.io/


>I assumed

You assumed wrong. Honestly that was never case, but maybe it was better 15 years ago


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