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Humanoid Robot Actuators: The Complete Engineering Guide

https://www.firgelli.com/pages/humanoid-robot-actuators
34•ofrzeta•2h ago•2 comments

Using "underdrawings" for accurate text and numbers

https://samcollins.blog/underdrawings/
128•samcollins•2d ago•21 comments

BYOMesh – New LoRa mesh radio offers 100x the bandwidth

https://partyon.xyz/@nullagent/116499715071759135
326•nullagent•11h ago•105 comments

DeepClaude – Claude Code agent loop with DeepSeek V4 Pro, 17x cheaper

https://github.com/aattaran/deepclaude
301•alattaran•7h ago•120 comments

Discovering Hard Disk Physical Geometry Through Microbenchmarking (2019)

https://blog.stuffedcow.net/2019/09/hard-disk-geometry-microbenchmarking/
37•TapamN•3d ago•1 comments

Roger Sweet, Creator of the He-Man Action Figure, Dies at 91

https://www.nytimes.com/2026/04/29/arts/roger-sweet-dead-he-man.html
22•ChrisArchitect•2d ago•1 comments

The 'Hidden' Costs of Great Abstractions

https://jdgr.net/the-hidden-costs-of-great-abstractions
120•jdgr•6h ago•29 comments

Tar Files Created on macOS Display Errors When Extracting on Linux (2024)

https://aruljohn.com/blog/macos-created-tar-files-linux-errors/
78•heresie-dabord•3d ago•46 comments

Southwest Headquarters Tour

https://katherinemichel.github.io/blog/travel/southwest-headquarters-tour-2026.html
221•KatiMichel•12h ago•66 comments

US–Indian space mission maps extreme subsidence in Mexico City

https://phys.org/news/2026-04-usindian-space-mission-extreme-subsidence.html
132•leopoldj•2d ago•54 comments

OpenAI's o1 correctly diagnosed 67% of ER patients vs. 50-55% by triage doctors

https://www.theguardian.com/technology/2026/apr/30/ai-outperforms-doctors-in-harvard-trial-of-eme...
344•donsupreme•1d ago•278 comments

A desktop made for one

https://isene.org/2026/05/Audience-of-One.html
285•xngbuilds•14h ago•124 comments

K3sup – bootstrap K3s over SSH in < 60s

https://github.com/alexellis/k3sup
36•rickcarlino•2d ago•10 comments

Introduction to Atom

https://validator.w3.org/feed/docs/atom.html
67•susam•7h ago•19 comments

Let's Buy Spirit Air

https://letsbuyspiritair.com/
281•bjhess•6h ago•254 comments

Bad Connection: Global telecom exploitation by covert surveillance actors

https://citizenlab.ca/research/uncovering-global-telecom-exploitation-by-covert-surveillance-actors/
122•miohtama•13h ago•7 comments

The text mode lie: why modern TUIs are a nightmare for accessibility

https://xogium.me/the-text-mode-lie-why-modern-tuis-are-a-nightmare-for-accessibility
160•SpyCoder77•5h ago•64 comments

Denuvo has been cracked in all single-player games it previously protected

https://www.tomshardware.com/video-games/pc-gaming/denuvo-has-been-bypassed-in-all-single-player-...
275•oceansky•5d ago•170 comments

New statue in London, attributed to Banksy, of a suited man, blinded by a flag

https://www.smithsonianmag.com/smart-news/attributed-to-banksy-a-new-statue-of-a-suited-man-blind...
319•dryadin•10h ago•300 comments

Mercedes-Benz commits to bringing back physical buttons

https://www.drive.com.au/news/mercedes-benz-commits-to-bringing-back-phycial-buttons/
649•teleforce•15h ago•364 comments

A Treasure Trove of Fossils Rewrites the Story of Early Life

https://www.quantamagazine.org/a-treasure-trove-of-cambrian-fossils-rewrites-the-story-of-early-l...
4•worldvoyageur•2d ago•0 comments

Israel national security minister served gold death penalty noose birthday cake

https://www.independent.co.uk/news/world/middle-east/israel-minister-death-penalty-noose-birthday...
6•0x54MUR41•10m ago•0 comments

Why TUIs are back

https://wiki.alcidesfonseca.com/blog/why-tuis-are-back/
302•rickcarlino•11h ago•314 comments

First Tesla Semi Rolls Off High-Volume Production Line

https://electrek.co/2026/04/29/tesla-semi-first-truck-high-volume-production-line/
56•m463•2d ago•51 comments

Text-to-CAD

https://github.com/earthtojake/text-to-cad
96•softservo•3d ago•28 comments

I recreated the Apple Lisa computer inside an FPGA [video]

https://www.youtube.com/watch?v=8jNQDcpHc68
90•cyrc•11h ago•17 comments

Security through obscurity is not bad

https://mobeigi.com/blog/security/security-through-obscurity-is-not-bad/
140•mobeigi•14h ago•149 comments

Agentic Coding Is a Trap

https://larsfaye.com/articles/agentic-coding-is-a-trap
297•ayoisaiah•6h ago•202 comments

What is Z-Angle Memory and why is Intel developing it?

https://www.hpcwire.com/2026/02/05/what-is-z-angle-memory-and-why-is-intel-developing-it/
97•rbanffy•2d ago•36 comments

Make your own microforest (2025)

https://ambrook.com/offrange/environment/a-forest-in-your-pocket
82•bookofjoe•10h ago•17 comments
Open in hackernews

Parametric Modeling with Grasshopper

https://baharmon.github.io/basics
40•downboots•12mo ago

Comments

ddkto•12mo ago
It’s hard to believe this is the first time I’ve seen Grasshopper on HN!

Just this morning, a colleague showed me a web app for building option exploration that he had vibe coded on Replit that wrapped around existing core logic in a Grasshopper script hosted in RhinoCompute [1].

The combination of visual programming, the tree data structure and Rhino’s geometry engine has made this the de facto standard for parametric design in architecture (sorry, Dynamo…)

[1] https://github.com/mcneel/compute.rhino3d

downboots•12mo ago
Similar interface idea echoed:

Unity

https://game-ace.com/wp-content/uploads/2020/04/Bolt5.gif

Blender

https://blenderartists.org/uploads/default/original/4X/3/0/c...

Chemcad

https://img.informer.com/screenshots/3390/3390423_1.gif

Even KiCad if we stretch the analogy

Would be good to see this for general programs, or with modular AI agents, or for ODE compartment models.

Also of note: https://worrydream.com/ExplorableExplanations

FormFollowsFunc•12mo ago
Am I wrong in thinking that Grasshopper is procedural modeling and not parametric modeling? Parametric modeing is used in software like Solid Works where you don’t have nodes but have parameters, a constraint system and construction history. Solid Works was developed in the 90s while Grasshopper came out in 2007. Another is example is Pro/Engineer from Parametric Technology Company (PTC) which came out in 1988. Patrik Schumacher, an architect coined the term parametricism in 2008. His employees created node graphs in Grasshopper while he just tweaked the parameters. I wonder if that’s why he came up with the term. Grasshopper has parameters but what makes it different from industrial design CAD is that you construct geometry with a series of nodes i.e. a procedure.
Duanemclemore•12mo ago
Grasshopper doesn't have to be used strictly "procedurally" as you can reference in geometry from Rhino. However, some of us try to work as procedurally as possible - creating everything strictly within Grasshopper if at all possible. It -is- also possible to use it as a very strong parametric design tool. There is no looping exposed to the user in a normal gh script - but used in the way I think is best, you're always applying conditional logic to make the data and operations do what you want.

A quick example - you can use what are called gates and filters in Grasshopper, so you can do things like route faces that meet some criterion you've set through one set of operations and those which don't through another. Then you can use pattern matching or other operations to weave the data back together in the proper order...

dmos62•12mo ago
You seem insightful on this subject. What other parametric design tools, techniques or technologies do you consider noteworthy?
Duanemclemore•12mo ago
Hey, I'm not used to feeling "seen" on HN! Architect, architecture professor, and computational designer here. This is a great first intro to Grasshopper. The links he provides near the top are next steps for those interested in more.

I've found that it opens computational design and programming more broadly up to a broader audience. It has found huge purchase in architecture specifically. I would say this is as much cultural as technical, as architects generally are less rigorously systematic and more global in their thought processes. As people who work largely in the visual domain we are also "visual learners" so to speak.

I first started dipping my toe into Grasshopper in about 2010, and feel that I was fairly expert by about 2015. SHAMELESS PLUG [0]. I've used it at a high level since, and taught it extensively.

Most users - almost all for a very long time - used it primarily as a tool to create, draw, and fabricate more crazier geometry easier. And it is certainly good for that. But in using it - and especially in teaching it - I also find that it is excellent to demystify the design process in ways that folks like programmers instinctively understand. That is you have to be able to break complex problems down to a series of atomically small operations, then build those back up to sophisticated outcomes.

Maybe the most valuable aspect of this - both in my practice and teaching - is understanding how to work both as procedurally and parametrically as possible (I'll put more about this under the comment to that end that's already been posted). Many, if not most, of our jewelry pieces are standalone grasshopper files which reference no outside data at all.

Anyway - I have much, much more I could say about: its use in architecture, design, and education; its relation to learning to think and create a rigorous and flexible design process; and more. But it's great to see it here!

[0] Since 2015 my partner and I have run jewelry company X Over Zero - https://xover0.com/ . All of our designs start as my mathematical and geometric explorations, coded in Grasshopper.

p.s. Incidentally I'm also based in the deep south like Mr. Harmon. And - although we must know people in common, sadly this is the first time he's hitting my radar. I'll be emailing him by the end of the night. Thank you OP for bringing him and his work to my attention!

Duanemclemore•12mo ago
If you want to check out the motherlode of other visual programming languages, platforms, etc check out Ivan Reese's Visual Programming Codex.

https://github.com/ivanreese/visual-programming-codex

https://github.com/ivanreese/visual-programming-codex/blob/m...

Although I'm going to have to create a pull request because he doesn't have Flowgorithm on there, which is an excellent tool for teaching the very very first steps of learning to program...

http://flowgorithm.org/

Terrible name, wonderful tool.

msds•11mo ago
It’s fun seeing an uptick of rhino/grasshopper content here lately - two articles in a week?! The McNeel extended universe is a fun place to play around in, and I’ve met lots of great people since I started working on Rhino.
jazzyjackson•11mo ago
Grasshopper is dope. Years ago I used it to pipe in skeleton and RGB mesh data from a Microsoft Kinect and then sent Open Sound Control packets to Pd-extended to trigger sound events with my body. Really great for general purpose event oriented programming

https://youtu.be/VOu3waxAYDw