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News for “work out”
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app.trusslab.ai• Jul 27, 2026• 1 min read
Show HN: Browser CAD for stock-tube structures with generated 3D-printed joints(Submitting as TrussLab's UI designer - my husband Jan built the editor and wrote the text below; he's answering questions in the thread as janherich.)The linked demo opens TrussLab with a deliberately simple triangle frame and walks through its construction in real time, with narration. You can sit back and watch, orbit around the model without interrupting autoplay, pause or resume the build, or take over at any point and edit it yourself.TrussLab grew out of my earlier work on SpaceDelta3D large-format delta printers and ultralight SpaceDrone quadcopter frames. At that time, the tooling was just a collection of Clojure scripts that I interacted with from a REPL to generate OpenSCAD models. The underlying idea is simple: use straight-cut tubes or rods made from metal, composites, or even wood for the long members carrying tension and compression, and 3D-print only the geometrically complex joints. Keeping the printed parts small reduces print time, failure risk, warping, and the cost
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bing.com• Jul 27, 2026• 1 min read
The Best Portable Power Stations for 2026Whether you're prepping for summer storm outages, working remotely, or heading off-grid, we tested the best portable power stations for safe, quiet, and reliable backup.
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con-dog.github.io• Jul 27, 2026• 1 min read
Show HN: Watch 14-Byte AI "brains" attempt to solve a 2D maze (Its hard)Hey HackerNews,I built this project over the last few weeks as a palette cleanser from a failed game launch.I wanted to learn a bit about AI/Neural-Networks and naively thought I could build a tiny maze-solving AI in a weekend with a 100% solve rate.Well - I couldn't, but I got pretty close. 14 Bytes total model size, and a 96.5% solve rate on unseen mazes. Trained across 46 phases experimenting with different ideas to improve the model (better performance, smaller size).Its quite fun to watch the model attempt to solve the maze, when they fail its usually due to getting stuck in a loop. The models have no access to coordinates, map-data, or external memory scratches - they must navigate using only immediate local neighbourhood observations.There is a model dropdown and you can see how the model has progressed over each phase, constantly getting smaller and increasing its solve rate. Total trained models number in the thousands - I just expose the winning models from each phase.Overall
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github.com• Jul 27, 2026• 1 min read
Show HN: Injectable time and timers with custom Date types for TypeScriptI find TypeScript js/node environment is missing a Time-Provider (just like *.*NET TimeProvider for instance ships with its framework).So for this purpose I built a small library (@time-provider) tailored for js/node environment.Obviously the goal is to both avoid using global monkey-patching with fake-timers or re-writing your clock interface... and still use your date library (native or custom).I propose four clock strategies: system (real time), fixed manual (advance time explicitly), and sequential (replay of a sequence of timestamps).I also benchmarked slightly better performances than jest / sinon.The project is still young, so the API may still receive refinements as real usage appears.I would be happy to hear feedback on this ! Take care.You can check it out on GitHub: https://github.com/jaenyf/time-providerJaenyf
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github.com• Jul 27, 2026• 1 min read
Show HN: I built a static verifier for OpenCode to stop unsafe AI tool callsErik Meijer wrote the paper "Guardians of the Agents" on formal verification for AI workflows, and Nada Amin implemented it in the Guardians repository. I built this plugin to bring static security verification to OpenCode.How It Works: 1. Interception: Uses OpenCode's TypeScript plugin system ("tool.execute.before") to intercept candidate tool calls (bash, read, edit, write) before they run. 2. Sidecar Verification: Passes tool parameters to a local Python daemon running guardians.verify(). 3. Formal Verification (~1.5ms): Evaluates Z3 path containment (blocking path traversal like ../../../../etc/passwd), secret taint tracking (preventing .env data from flowing to output files or shell commands), and security automata (enforcing read-before-edit rules). 4. Pre-Execution Abort: If a violation is flagged, the plugin throws an exception to block execution before any side effects happen on disk, forcing the agent to self-correct.The repository links metareflection/guardians directly as a
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news.ycombinator.com• Jul 27, 2026• 1 min read
Show HN: How I built a debugging tool, and the agent, using it, found bugs in itThis story might never have happened, even though I'd been carrying the idea for a debugger for a long time. There was no trigger. But one day a trigger appeared that was strong enough that I set the project aside to build the debugger and never suffer like that again.A bit of backstory: I'm building a Platform for AI-solution developers, so anyone can come in and work on their own startups in a comfortable environment. There's a lot of work ahead to make that happen.I should mention that I'm building this entire project on principle using agentic coding. Not "vibe-coding" - that's for amateurs who've caught a whiff of "possibilities" - but genuine agentic coding, with a clearly structured workflow where the agent has no choice but to play by the rules I've set, within the boundaries I've built. On principle, I haven't written a single line of this project by hand.So there I was, doing routine work, fixing bugs in the Prompt Studio tool. I don't even remember now what exactly that bug
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news.ycombinator.com• Jul 27, 2026• 1 min read
Ask HN: 1950's Chip industry undermined unions how is AI not doing the same?In the 1950s the Chip industry undermined minorities, immigrants, women and killed unions.In the 1960-70s it targeted black civil rights groups.Along the way, white men were pushed into management, while anything outside of business was split into smaller tasked jobs. This in return gave companies leverage to cut salaries.I don't care what altman says chatgpt did in a blackbox. I judge the world by what I see. Reality is, chat, claude, etc etc are about as useful as smart as the stupidest, slowest engineer on the team.On the other hand, introducing them has made the job appear more "streamline" more production line like. Work increased, and salaries flattened.Now that companies are not getting returns off of AI, they are cutting AI spending, but make no mistake. Salaries will not recover.What am I missing? How am I wrong?Would love opinions on this
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hiitmeup.fit• Jul 27, 2026• 1 min read
Show HN: Simple HIIT timer for efficient workoutsHi HN community,As a busy techie with kids and other family obligations and my recent health diagnosis, I wanted an efficient way to integrate workouts in my daily routine and my research indicated that HIIT/Tabata style routines fit that requirement much better than a dedicated long running/planned workout routine.I made a simple PWA to help me with that endeavor that I have found useful and hoping some of you may like it as well. No sign ups needed but you can sign in if you'd like to save custom presets and history/progress. You may also enjoy some of the fitness guides/blog posts that I am put together to help someone get started more easily. Built using javascript, vite and firebase.Feedback is most welcome, both via the app/email or comments here.
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news.ycombinator.com• Jul 26, 2026• 1 min read
Qwen 27B with local well writen tools just as powerful as cluade models?I am noticing that for our fintech use case, well-written tools on self-hosted models are working just as well as frontier models. But people keep talking about round count and effective token utilization. Suggestions on how I can validate the hypothesis and close the debate for good in our org?
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punterjs.org• Jul 26, 2026• 1 min read
Show HN: Punter.js – single-file JavaScript game engine for teaching programmingWe host work experience students at Orca Scan. This year I mentored one myself.Schools teach programming theory, maybe some Python. Students rarely leave with something to show their friends. When I started coding on a ZX Spectrum, I typed in listings from INPUT magazine. Tweak a number, get more lives, you’re hooked. I wanted that same effect.So I pulled the JS engine we built for OrcaCam out into its own thing: punter.js. One file, ~2000 lines, plain ES5, no dependencies. Starting with Pong, a student can write a working game in an HTML file and have it live in 15 minutes.My goal is to create something simple schools can use to teach programming, but in a way that inspires.Would love your feedback, what do I need to add/improve to achieve this goal?
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occultgatsby.work• Jul 26, 2026• 1 min read
Show HN: The Occult GatsbyThe Occult Great Gatsby The Great Gatsby Annotated for Esoteric Content: The Fourth Way, Alchemy, Tarot, and KabbalahAuthor is my father, Jon Woodson. I'm the web guy who wanted to bring this to a wider audience with a more interactive way to pop-up the notes about esoteric content.Author's blurb from Amazon self-publishing page:F. Scott Fitzgerald’s novel, The Great Gatsby, is a manual for spiritual development. It is not a unique text, for many American modernist novels of canonical stature are similarly grounded in the occult. Fitzgerald was a follower of A. R. Orage who not only taught the Gurdjieff Work (the Fourth Way) but organized a vast literary network to further its goals.The chief reason that this occult literary tendency has remained in the shadows is that the arbiter of the movement has been poorly understood and critically neglected.The Great Gatsby belongs to a genre of the novel invented by Carl Van Vechten. Van Vechten’s novel, The Blind Bow-Boy (1923) was the model f
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mapmy.network• Jul 26, 2026• 1 min read
Show HN: Visualize your computer's network connections on a 3D globeHey all, two days ago I had the idea for a tool that visualizes all the internet connections my computer made. Now its real!Its a simple open source program written in Rust that listens for outbound connections your computer makes, runs traceroutes on each destination, geolocates each hop and renders in on a 3d globe.The tool (network cartographer) works on linux, mac and windows. Feel free to try it out. I tried making it as frictionless as possible.Beaware this is mostly a for-fun and educational tool. It will naturally be inaccurate as it doesnt show the routes the actual packets take, just the way that traceroute did. Its also limited how much data i could find for the geolocalization.
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pdf-reader-peach.vercel.app• Jul 26, 2026• 1 min read
Show HN: A client side PDF and article reader backed by Google DriveI have been using different apps to read research papers, books, and web articles. On iPad, I read research papers and books on Apple Books, and articles in Safari; on Mac, I use skim for research papers and books, as it gives excellent annotation features.But I wanted one reading library that worked across iPad and Mac without locking my pdfs and annotations into a single service/app.So I have built a browser-based reader where your library lives in a folder you choose in google drive. The app itself is client side: pdfs, imported articles and annotations files are stored in your drive rather than on my server.- PDFs and web articles live together in one library- Articles stay as HTML instead of being converted into PDFs (because converting to PDFs often cuts words vertically such that the top half of the word is on one page and the rest on another)- Highlights, handwritten annotations and notes are stored separately alongside each document- The app first writes locally, then syncs wi
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news.ycombinator.com• Jul 26, 2026• 1 min read
Ask HN: Is an in-page speed reader useful?A friend suggested I embed an RSVP reader in my blog posts, so I did a floating button in the corner of the page. It uses the Spritz heuristic for the focus letter (letter 1 for short words, up to letter 4 for long ones) but maps back through punctuation, and the timing isn't uniform either. I don't want to bury this post in technical detail, so if you're curious about any of it, just ask and I'm happy to share.But I'm not really used to speed readers, so I don't know if it's actually useful. What do you think?And about browser extensions? does a per-site reader still make sense when an extension works everywhere, in theory?It's on my blog (glitchedcat.com) on any post the lightning bolt button in the corner.
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news.ycombinator.com• Jul 26, 2026• 1 min read
Ask HN: I spent personal money on game dev. How to turn stalled project around?Over the last year I spent a sizable sum on a personal multiplayer game project. I designed the idea until it was ready, contracted an offshore dev team, spent several months iterating on the production and then had the unfortunate luck to have the contracting company go out of business while the project was still in a pre alpha stage.How should I rethink my problem space and move forward in this situation? Game dev is different from some trades in the sense that investment is heavily front loaded, which makes it difficult to start bringing in revenue while you’re still building out the MVP.I firmly believe in the project itself, it already shows promise. The game is an online battle game, and what I currently have is a (rough) playable demo with placeholder art.Professionally, I’m a dev, so I could keep building it myself, although it involves much more than just software hours. There is a huge amount of work that includes 2D/3D art, sound, music, networking, UI, onboarding, testing,
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github.com• Jul 26, 2026• 1 min read
Show HN: I built a transparent terminal wrapper for unobtrusive AII wanted a way to use my existing AI subscriptions as a terminal assistant to analyze shell output or help me with a complicated awk incantation from time to time without getting in my way the rest of the time. I couldn't find anything existing that does this do I built it! I used pvolok's excellent mprocs as a starting point and leaned heavily on Claude and Codex for coding all but the gnarliest parts while providing extensive guidance on how it should be implemented.I know that coding agents can run shell commands already but that puts the AI in the driver's seat. Terminai let's me be the driver, with codex or claude (or any other agent) sitting quietly in the backseat until I want its help.The hardest part was making it truly transparent. Most TUIs that embed a terminal break the terminal emulator's native scrollback and frequently also break copying to the clipboard. I worked hard to make sure that that both of these work exactly as they would without terminai. Along the way I had
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github.com• Jul 26, 2026• 1 min read
Show HN: A browser-based video editor that renders videos directly with FFmpegWeave is a React app that provides a multi-track timeline editor to perform basic video edits like trimming, stitching, transitions, audio tracks etc. which maps directly to an FFmpeg command to render the video.I tried my best to have the React "video" preview closely replicate the FFmpeg lavfi filtergraph output, but naturally this is not perfect (especially replicating the `eq` filter using SVG filters is quite inaccurate).I've built this as a prototype for another project I'm working on, so I don't plan to actively maintain it, but I thought it'd be cool to share it.Try it live: https://weave.salviano.xyz/