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Show HN: Spin Lab

https://srijanshukla.com/artifacts/spin-lab/
15•srijanshukla18•1d ago•7 comments

Show HN: We built an 8-bit CPU as 2nd year EE students

https://github.com/c0rRupT9/STEPLA-1
46•CorRupT9•2d ago•10 comments

Show HN: An 8-bit live gamecast for baseball

https://ribbie.tv/watch
217•brownrout•11h ago•120 comments

Show HN: Inkwash, a watercolor sketching app and explanation

https://johnowhitaker.github.io/inkwash/about
186•Yenrabbit•4d ago•21 comments

Show HN: BlitzGraph – Supabase for graphs, built for LLM agents

https://blitzgraph.com
8•lveillard•1d ago•2 comments

Show HN: High-Res Neural Cellular Automata

https://cells2pixels.github.io/
189•esychology•18h ago•49 comments

Show HN: Capacitor Alarm Clock

https://github.com/ArcaEge/capacitor-alarm-clock
138•arcaege•3d ago•42 comments

Show HN: StarScope – Free astronomy dashboard for observers outside the US/UK

https://starscope.live/feed
17•xenophin•2d ago•2 comments

Show HN: Local personal data redaction for any AI tools

https://github.com/sophia486/pii-gui
3•unusual_typo•2h ago•0 comments

Show HN: Deconvolution – a Rust image deconvolution and restoration crate

https://github.com/pbkx/deconvolution
31•rmi0•2d ago•4 comments

Show HN: Cowork/Codex DOCX plugin. Uses 2x fewer tokens than the docx skill

https://github.com/LegalRabbit-AI/legalrabbit-docx-claude-plugin
4•tanin•3h ago•3 comments

Show HN: cuTile Rust: Safe, data-race-free GPU kernels in Rust

https://github.com/nvlabs/cutile-rs
101•melihelibol•1d ago•16 comments

Show HN: Criterion Closet as a website – pull any of 1,247 films off the shelf

https://the-criterion-closet.vercel.app/
3•olievans•5h ago•1 comments

Show HN: Vpod – Tiny Linux sandbox running in WASM

https://github.com/capsulerun/vpod
10•mavdol04•11h ago•1 comments

Show HN: I built 184 free browser tools – PDF, image, dev, AI tasks, no upload

https://brevio.pro
85•ruimbarreira•18h ago•28 comments

Show HN: WaylandClientKit – a Swift Wayland client substrate for Linux

https://github.com/conxlgtm/WaylandClientKit
3•Nocerg•5h ago•0 comments

Show HN: Reyn – local-first AI that journals and recalls your work

https://www.usereyn.com/
4•toluwajibodu•5h ago•0 comments

Show HN: Chatty Lingo – A language practicing app

https://www.chattylingo.com
2•farstill•6h ago•0 comments

Show HN: I built a spelling app for kids with my 7-year-old

https://spellabee.com/
2•narenst•6h ago•1 comments

Show HN: Relaymux, a tmux-based meta-harness for local coding agents

https://github.com/mupt-ai/relaymux
7•byhong03•10h ago•0 comments

Show HN: Tabia – The first free, open-source chess opening trainer

https://github.com/daxaur/tabia
2•daxaur•7h ago•0 comments

Show HN: Fata – Spaced repetition to fight skill rot from AI coding

https://fata.dev
118•djoume•6d ago•53 comments

Show HN: VoiceDraw – Talk system design out loud, the diagrams draw themselves

https://voicedraw.com/
47•ajaypanthagani•1d ago•19 comments

Show HN: Sabela – A Reactive Notebook for Haskell

https://sabela.datahaskell.com/
45•mchav•3d ago•6 comments

Show HN: Agenthatch – Compile any skill into a standalone Python agent

https://github.com/agenthatch/agenthatch
8•EternalRights•15h ago•0 comments

Show HN: In-browser Python/Pandas/Git practice with animated Git simulator

https://practice.lernerpython.com/classroom/540d7ab1a1/
5•reuven•12h ago•0 comments

Show HN: Garden of Flowers – an archive of pictorial typography before ASCII art

https://garden-of-flowers.heikkilotvonen.com/
156•california-og•1d ago•26 comments

Show HN: Veterinarian turned founder, AI lawn diagnosis

https://grassdx.com/
75•andrewbr•2d ago•60 comments

Show HN: Mira – Open-source and self-hosted AI code reviewer

https://github.com/miracodeai/mira
13•upmostly•14h ago•2 comments

Show HN: Kage – Shadow any website to a single binary for offline viewing

https://github.com/tamnd/kage
698•tamnd•3d ago•140 comments
Open in hackernews

Show HN: Spin Lab

https://srijanshukla.com/artifacts/spin-lab/
15•srijanshukla18•1d ago
Hey HN, I built Spin Lab: a browser-based interactive explainer for table-tennis spin. It visualizes topspin/backspin, spin rate, ball trajectory, bounce behavior, and why the opponent’s return reacts the way it does. I built it because spin is central to table tennis, but most explanations are either too hand-wavy or too static.

Thanks Fable, we miss you

Comments

srijanshukla18•1d ago
Hey HN, I built Spin Lab: a browser-based interactive explainer for table-tennis spin.

It visualizes topspin/backspin, spin rate, ball trajectory, bounce behavior, and why the opponent’s return reacts the way it does.

I built it because spin is central to table tennis, but most explanations are either too hand-wavy or too static. I wanted something you can scrub, slow down, and experiment with.

lunchbucket•50m ago
You might consider emailing hn@ycombinator.com and asking about the standing of your account.
gnabgib•49m ago
What are you talking about? Their account is fine.. unlike the corpus you've been trained on.
N_Lens•5m ago
Accusations of being an LLM are par
altmanaltman•13m ago
I opened it on mobile, the first window shows up and the text cannot be scrolled through.

Also absolutely horrible UI and seems like you just put up whatever Fable shat out without checking or any thought. I am only saying this because you shared it for public feedback

threatripper•6m ago
It would be great if we could use it for training with live measured data.
N_Lens•3m ago
What really sent me for a spin is how long I wasted on this demo.