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stefanka

150 karma · joined December 1, 2020

Computational cognition, robotics, bioinformatics, machine learning and data science. Pythonista, angular/typescript, C++ and rustacean.
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stefanka··on CBP is monitoring US drivers and detaining those with suspicious travel patterns
They refer to the German Democratic Republic (East Germany) that likely had different rules
stefanka··on Show HN: Encore – Type-safe back end framework that generates infra from code
Do you consider supporting rust?
stefanka··on Ratatui – App Showcase
They use rust for the gpu

https://github.com/zed-industries/zed/tree/main/crates/gpui

See the discussion on a collection of elements ontop

https://news.ycombinator.com/item?id=45719004

stefanka··on Intervaltree with Rust Back End
Will you publish it as a crate too?
stefanka··on Beginner-friendly, unofficial documentation for Helix text editor
Amazing work, Tank you. Looking forward to the update
stefanka··on Beginner-friendly, unofficial documentation for Helix text editor
It’s great! How did you do it? I printed it out months ago and wondered how to do one myself
stefanka··on Mesh2Motion – Open-source web application to animate 3D models
Great project! It uses the motion library from the artist quaternius. He has some wonderful free and low-cost models.
stefanka··on No I don't want to turn on Windows Backup with One Drive
Apple's main revenue is not from advertising but mostly from expensive hardware
stefanka··on No I don't want to turn on Windows Backup with One Drive
After the upgrade (which I even don't remember allowing), I had double UEFI entries. Cost me nearly a day to be able to boot windows (and it works only from the Linux boot menu)
stefanka··on Rustroid, a Rust IDE for Android
Will it run on the Quest headset? It’d be nice to develop rust extensions for Godot in a real IDE. Price seems fair to me too. Will there be a means to test the software first?
stefanka··on Why your outdoorsy friend suddenly has a gummy bear power bank
I’m kind of disappointed that the earbuds mentioned in the text aren’t shaped like gummy bears (and the power bank not like a pack thereof)
stefanka··on Ask HN: What alternatives to GitHub are you using?
This should be listed on European-alternatives.eu. I was just looking for something similar with little success. Thanks for sharing.
stefanka··on Ask HN: What alternatives to GitHub are you using?
Does this work for private/closed source project? Where are the servers located and how is it financed?
stefanka··on Car has more than 1.2M km on it – and it's still going strong
Everything but all the diodes down its left hand side
stefanka··on Ask HN: What are you working on? (July 2025)
A motion capture App that uses a probabilistic approach to fully automate the labeling and mapping process. I have this algorithm for quite a while in my head and want to use it to get up to speed with Godot and Rust. Intended to work with marker-based systems and eventually on unsynchronized multi camera setups
stefanka··on Stop Pretending LLMs Have Feelings Media's Dangerous AI Anthropomorphism Problem
It’s an extrapolation beyond known data that is inaccurate. I wonder why this can’t be detected during inference
stefanka··on I avoid using LLMs as a publisher and writer
> But I never want me to be a reason he backs away from something because my feedback was wrong.

Do you want an LLM to be the reason? You can explain that your Feedback is opinionated or biased. And you know him better than any machine ever will

stefanka··on Hand: open-source Robot Hand
Depends entirely on the application I guess, but you'd get further for sure. Either way you are now confronted with more complex cable management and maintenance, and additional weight. You'd at least get around gravity compensation with that approach. Personally, I think you need a lot more sensors and complex sensor fusion to achieve acceptable dexterity to be useful outside of an industrial context and this comes at high costs
stefanka··on Hand: open-source Robot Hand
I agree. But even then elasticity had to be taken into account (and maybe even gravity), if the object is very delicate.
stefanka··on Hand: open-source Robot Hand
> ...that's how it was in year 2020

Humanoid robotics research was pretty popular in the early 2000s already, with remarkable, reproducible results not only in videos. It’s definitively more present in the media now.

stefanka··on Hand: open-source Robot Hand
Ooooh. For _that_ application you better have either enough elasticity or reliable force/torque sensors and a good control in place.
stefanka··on Hand: open-source Robot Hand
It’s one of best designs I have seen, I admit. But for that price you cannot get absolute encoders outside the motor, reliable force/torque sensors (think picking up a strawberry), tendons (thread below). It might be too limited for research and real-world projects unfortunately.
stefanka··on Hand: open-source Robot Hand
If space permits you should add absolute encoders in the joints. In a finger that’s likely a challenge. In an arm, that’s easy
stefanka··on Hand: open-source Robot Hand
If you can get a feedback loop at the respective joint, then yes, this might be enough. In case of an arm (not this hand), you can often only observe the end of a chain, and then, that’s more complex
stefanka··on Hand: open-source Robot Hand
Or both …
stefanka··on Hand: open-source Robot Hand
You don't necessarily need neural networks for that, there are more specialized function approximations that learn faster and enable life-long learning for kinematics/dynamics and extrapolate better than NN which are more general purpose.
stefanka··on Hand: open-source Robot Hand
Not to mention that they easily break and are annoyingly tedious to be replaced (I had to assist often enough on such "surgeries" in our lab)
stefanka··on Hand: open-source Robot Hand
Roboy used dyneema tendons if I recall correctly. Fluidic actuators is another option. IMO, additional sensors and sensor fusion are necessary but this will raise the costs and demand to control software significantly. We are researching humanoid robots for quite some decades now and these problems are easily underestimated (similarly to autonomous driving). I doubt we'll see them in our houses very soon.
stefanka··on Hand: open-source Robot Hand
Most tendons materials are elastic. That lead to create calibration problems and require proprioceptive sensors in the hand
stefanka··on Thunderbird 140 “Eclipse”
Safety in rufst is not only about memory safety. It’s also about avoiding unpredictable behavior.
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