The best Hacker News stories from Show from the past day
Latest posts:
Show HN: Panda, the world's first personal AI computer
We're building an AI computer for consumers, most of whom are quite hesitant with existing services due to privacy concerns and because of costs that add up when using various AI tools.
Show HN: Destroy Any Website with Stickman
Show HN: Free alternative to graphics design giants
A webassembly web based app that help editing raster and vector on browser without any subscription or signups
Show HN: Hntui – A TUI for Hacker News
hi there! i'd like you to try out a tui i made for browsing hackernews. it's built using opentui and also effect (learning experiment). i really like it and i think you will too!
Show HN: PaperMono, e-ink fridge magnet shopping list with mobile web page
Fridge magnet shopping list on an M5Stack PaperMono (ESP32-S3, e-ink
touchscreen), synced with a phone web app over Wi-Fi. Works offline,
~2,400 lines of C++.<p>This is a great wee device! BLE, Wi-Fi and LoRa on one board makes it flexible
for way more than a shopping list, this is just what I built first. This
firmware only uses Wi-Fi.<p>Fully vibe-coded with Claude Code, I didn't hand-write this. I wanted to see
how Claude would get on with building something useful for a new hardware device.<p>As it's stuck to the fridge it's easy for the family to use, and it's already being used day to day which I'll admit is a first for a home built project like this
Show HN: HN.watch – Videos of all Hacker News posts
Hi HN, I’m Per, founder of Scrimba (YC S20). We’ve spent the last decade teaching people how to code with an HTML-based video format. We’ve now plugged an LLM into it, so that people can create explainer videos about anything. It’s called “Scrimba Explain”.<p>To demo this technology for Hacker News, we built HN.watch. It’s like HN, but with explainer videos instead of articles. We create them on-the-fly the first time someone clicks on a link.<p>While there are obvious visual drawbacks of using HTML instead of diffusion models, there are three big benefits: - Speed: Much faster to generate than pixel-based videos (just a few seconds from click to playback) - Cost: Our cost per video is ~$0.04. (Excluding image generation, which some videos utilize. Quickly blows up the cost) - Easy editing: the above benefits also make AI-assisted editing cheap & fast<p>Our hypothesis is that if video creation goes from “dollars and minutes” to “cents and seconds”, a bunch of new use cases will be unlocked. Here are some we see already: - A video explanation of every single Pull Request (we do this internally) - Give every page in your internal/extrernal docs a video - Turn a complex article into a video in ~4 seconds (via our Chrome extension) - Course creators can quickly draft lessons before recording the real thing - People also create a lot of personal stuff stories for their kids, wedding invitations, birthdays, etc<p>The stack is based on an open-source programming language (Imba) created by our CTO, Sindre Aarsæther. It compiles to JavaScript, so it interoperates fully with the npm + node ecosystem. You can learn more here: <a href="https://imba.io/" rel="nofollow">https://imba.io/</a><p>We’ve also built our own sync engine (OP), and a context management system for agents (Q). We feared this would make the LLMs struggle when writing code for us, as neither is in their training data (there’s very little Imba in there too). However, we’ve been pleasantly surprised to see that LLMs actually are really good at our stack. This is probably because the stack is extremely dense. Imba is compact, and so is OP, where a single declaration sets storage, sync, permissions, UI, and what the AI sees. This means there’s no translations between frontend, API, db and JSON where the model can get confused and get things wrong.<p>Simply said, instead of using React.js, Express, Supabase, and LangChain, we built it all from scratch. Definitely suffering from the “not invented here” syndrome, lol! As for the models, we use Gemini, GPTs, Inworld, ElevenLabs, and a few others.<p>If you want to try it out, just take your pick: - The Web UI (scrimba.com/explain) - MCP (add it to your coding agent) - ChatGPT Plugin - Chrome Extension<p>You can find a link to all of the above in our docs: <a href="https://docs.scrimba.com/explain/introduction" rel="nofollow">https://docs.scrimba.com/explain/introduction</a><p>And finally, a real pixel-based video of the tool: <a href="https://www.youtube.com/watch?v=k6rbHmBxSEs" rel="nofollow">https://www.youtube.com/watch?v=k6rbHmBxSEs</a><p>Would love to hear your feedback and if anyone has ideas for other use cases.<p>PS: I expect quite a bit of pushback from HN for this launch, given how fan of text the HN crowd is. This kind of tool is not for everyone. But there are a lot of people today who prefer videos over text, especially in the younger generations.
Show HN: Ekselio – Loveable for finance workflows (local first)
Hi everyone, I am KD - Back in my college days, I dabbled with coding, learned the basics, HTML, CSS etc. but somehow I ended up in Finance which consumed the next 20 years. Then, during covid I picked up coding again, learned react, typescript, etc - even built a rudimentary site - and then came the chatgpt moment, followed by Claude etc.<p>So, as a side project, considering that I had spent 20 years in finance and M&A I started building Ekselio, loveable for finance workflows.<p>Differently from other vibe coding tools, this is local first - meaning the workflows are orchestrated by the LLM based on the file schema but then the execution happens in the browser - the cool thing is that you can see the canvas, the previews of each node, and the code base (SQl) - see the Canvas tab.<p>That said I did include a home tab, which is more of a visual, mainly because people think it's easier to relate to how folks operate, although I know finance and accounting folks usually like the workflow and full transparency - the other thing is that once you create a workflow you can save it and then next month,you can just click Run and it runs it again with no LLM tokes involved - so the infrastructure is minimal.<p>Everything can be exported in an excel data pack with M code in case someone would want to reproduce - think Audit ready. And, I also connected to quickbooks on line so someone can directly pull in and manipulate their financials live - I also connected to Fred which carries literally 800k series in terms of macro economic data - i.e. oil prices, inflation, CPI etc and finally to stocks.<p>I am hoping people find holes in the architecture or any ideas to make this flow a little bit better. It is in progress so if you run into bugs let me know. Considering that I am using my own API key, I have put a wall in case people overuse it but DM me if you would like to continue using, I can turn off the wall for you - hoping to keep that to a small number of users if I can and will do my best. Thank you again, appreciate you taking the time.
Show HN: A CC0 museum of retro 3D tricks you can paste into a page
Show HN: Building a Markdown editor for Mac, iOS and web
I've spent the last 10 months building Beauty: a local, powerful greco-roman Markdown editor where the page looks finished while you type. It runs on the Mac, iPhone and in the browser, and the browser version opens without an account: <a href="https://app.markdown.beauty" rel="nofollow">https://app.markdown.beauty</a><p>I was frustrated with writing apps, and like most I used Apple Notes. After 2+ years immersed in Cursor, Codex and CC, I wished some interactions existed in a text editor.<p>The Markdown renders in place as you write it, including tables (which you can drag and resize without lining up pipes), KaTeX math and Mermaid diagrams. A lot of thought went into typography and the writing experience.<p>Your notes on the Mac are plain .md files in a folder with images next to them, so they open in anything else too. Each note keeps 200 versions. If you share a note with a link it syncs peer to peer over WebRTC while someone has it open, and the server that connects you only ever sees a random room id.<p>Most of the ~1,000 commits went into the editor itself. It's a contenteditable, and I don't let the browser restructure the document at all, which was a lot more work than I expected. Building this to be performant and cross-platform required some novel approaches, which I'll later open source. The editor is free with no account or ads, and there's an optional subscription for sync through your own iCloud.<p><a href="https://www.markdown.beauty" rel="nofollow">https://www.markdown.beauty</a>
Show HN: TinyAIArena watch AI agents battle it out
Did you ever click on an “AI Arena” expecting glorious battle and instead get a boring benchmark? If so, this project is for you: proper life-or-death fights between four models on a picturesque 8×8 grid. May the most intelligent one win!<p>Click on any of the matches to spectate them.<p>Code: <a href="https://github.com/hp6/ai-arena" rel="nofollow">https://github.com/hp6/ai-arena</a>
Show HN: TinyAIArena watch AI agents battle it out
Did you ever click on an “AI Arena” expecting glorious battle and instead get a boring benchmark? If so, this project is for you: proper life-or-death fights between four models on a picturesque 8×8 grid. May the most intelligent one win!<p>Click on any of the matches to spectate them.<p>Code: <a href="https://github.com/hp6/ai-arena" rel="nofollow">https://github.com/hp6/ai-arena</a>
Show HN: Lofi Cities – Pixel-art city nights with browser-generated lofi
Show HN: Lofi Cities – Pixel-art city nights with browser-generated lofi
Show HN: Agentic CUDA Kernel Optimizer
Hello; I was working on optimizing some CUDA kernels and I thought may be it is a good oppurtunity learn langgraph as well. I created a simple C++ CUDA Test Harness and handed that to AI agents. They can run kernels, get benchmarks, and even can profile via nsight
Show HN: Hacker Atlas - A map of what Hacker News talks about
I built a tool to explore HN topics and how they change over time.<p>Currently covers 2024 to today. Is it useful? What's missing?
Show HN: Hacker Atlas - A map of what Hacker News talks about
I built a tool to explore HN topics and how they change over time.<p>Currently covers 2024 to today. Is it useful? What's missing?
Show HN: A Claude Code skill to analyze your chess games
Hello HN,<p>It started as an experiment: can Claude play chess properly if it uses vision instead of PGN notation? Somehow it can.<p>The next experiment was to see whether Claude + Stockfish could explain a game. Somehow it can too.<p>A few sessions later, I had a system that takes my live audio notes (or text, for that matter) and a vague instruction like "analyze my last lichess game", and gives me a commented video of the game. The result is not perfect and it takes time to deliver (an hour or so), but for me it is a much more pleasant and memorable experience than clicking around Stockfish branches. It burns tokens, so make sure you have enough quota. From the session logs, the last analyzed game would have cost around $15 at API prices.<p>The fact that it reflects on my own thinking during the game makes it interesting from a teaching point of view, so I thought it was worth sharing.
Show HN: A Claude Code skill to analyze your chess games
Hello HN,<p>It started as an experiment: can Claude play chess properly if it uses vision instead of PGN notation? Somehow it can.<p>The next experiment was to see whether Claude + Stockfish could explain a game. Somehow it can too.<p>A few sessions later, I had a system that takes my live audio notes (or text, for that matter) and a vague instruction like "analyze my last lichess game", and gives me a commented video of the game. The result is not perfect and it takes time to deliver (an hour or so), but for me it is a much more pleasant and memorable experience than clicking around Stockfish branches. It burns tokens, so make sure you have enough quota. From the session logs, the last analyzed game would have cost around $15 at API prices.<p>The fact that it reflects on my own thinking during the game makes it interesting from a teaching point of view, so I thought it was worth sharing.
Show HN: Reladraw – A diagram language where you decide where to place things
I love making diagrams to help understand, plan, etc. However, the options are (A) auto-placement languages like Mermaid or Graphviz (which don't let me decide how the diagram looks), or (B) software like Draw.io which are powerful but are very time consuming (and inefficient for agents to manipulate).<p>I wanted to have the benefits of both, where you can define a diagram in a diagram language, but also retain a high degree of control over what the diagram looks like.<p>I also wanted this to work well for humans and agents.<p>On the Github link, there's a playground where you can try it out without installation. There's also instructions for a simple npm install and for installing a skill you can use with Claude or other agents.
Show HN: Reladraw – A diagram language where you decide where to place things
I love making diagrams to help understand, plan, etc. However, the options are (A) auto-placement languages like Mermaid or Graphviz (which don't let me decide how the diagram looks), or (B) software like Draw.io which are powerful but are very time consuming (and inefficient for agents to manipulate).<p>I wanted to have the benefits of both, where you can define a diagram in a diagram language, but also retain a high degree of control over what the diagram looks like.<p>I also wanted this to work well for humans and agents.<p>On the Github link, there's a playground where you can try it out without installation. There's also instructions for a simple npm install and for installing a skill you can use with Claude or other agents.