Show HN: Synesthesia, make noise music with a colorpicker
3 by tevans3 | 0 comments on Hacker News.
This is a (silly, little) app which lets you make noise music using a color picker as an instrument. When you click on a specific point in the color picker, a bit of JavaScript maps the binary representation of the clicked-on color's hex-code to a "chord" in the 24 tone-equal-temperament scale. That chord is then played back using a throttled audio generation method which was implemented via Tone.js. NOTE! Turn the volume way down before using the site. It is noise music. :)
Thursday, January 22, 2026
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Saturday, January 17, 2026
New top story on Hacker News: For me, Hacker News is probably the best community on the internet
For me, Hacker News is probably the best community on the internet
14 by DenisDolya | 6 comments on Hacker News.
For me, Hacker News is probably the best community on the internet. It’s not like others. Take Reddit, for example: at first glance it seems better, with tons of subreddits. But for a beginner, there is no real main entrance. With a new account, it’s a challenge - first you wait 5 days, then you need to earn karma just to post or comment in popular subreddits. On Twitter, you have to spend a long time building followers, or buy a checkmark, just to get access to recommendations. On Hacker News, everything feels right even if you are a beginner. Your post appears in the “new” feed, where everyone can see it. Karma is not so limiting here. At the start, you can make one post a day and a few comments, and after reaching just 10 karma, you become almost a full user - free to participate, contribute, and enjoy the platform. Hacker News is a place that survived the revolution of the modern internet and remained true to itself. A place without subscribers, paid boosts, or artificial promotion. The most important thing that keeps this world going is our elders people who preserve this spirit with discipline, guiding others who may have strayed from the path. HN is where the good, clean internet has survived after all these years. And I truly hope it will always stay this way. Thanks, HN.
14 by DenisDolya | 6 comments on Hacker News.
For me, Hacker News is probably the best community on the internet. It’s not like others. Take Reddit, for example: at first glance it seems better, with tons of subreddits. But for a beginner, there is no real main entrance. With a new account, it’s a challenge - first you wait 5 days, then you need to earn karma just to post or comment in popular subreddits. On Twitter, you have to spend a long time building followers, or buy a checkmark, just to get access to recommendations. On Hacker News, everything feels right even if you are a beginner. Your post appears in the “new” feed, where everyone can see it. Karma is not so limiting here. At the start, you can make one post a day and a few comments, and after reaching just 10 karma, you become almost a full user - free to participate, contribute, and enjoy the platform. Hacker News is a place that survived the revolution of the modern internet and remained true to itself. A place without subscribers, paid boosts, or artificial promotion. The most important thing that keeps this world going is our elders people who preserve this spirit with discipline, guiding others who may have strayed from the path. HN is where the good, clean internet has survived after all these years. And I truly hope it will always stay this way. Thanks, HN.
Friday, January 16, 2026
New top story on Hacker News: The Alignment Game
The Alignment Game
8 by dmvaldman | 0 comments on Hacker News.
https://docs.google.com/spreadsheets/d/1BYh9ZtEv4k7xoSXmtf1q...
8 by dmvaldman | 0 comments on Hacker News.
https://docs.google.com/spreadsheets/d/1BYh9ZtEv4k7xoSXmtf1q...
Thursday, January 15, 2026
Wednesday, January 14, 2026
New top story on Hacker News: Show HN: A fast CLI and MCP server for managing Lambda cloud GPU instances
Show HN: A fast CLI and MCP server for managing Lambda cloud GPU instances
2 by odedfalik | 2 comments on Hacker News.
I built an unofficial CLI and MCP server for Lambda cloud GPU instances. The main idea: your AI agents can now spin up and manage Lambda GPUs for you. The MCP server exposes tools to find, launch, and terminate instances. Add it to Claude Code, Cursor, or any agent with one command and you can say things like "launch an H100, ssh in, and run big_job.py" Other features: - Notifications via Slack, Discord, or Telegram when instances are SSH-ready - 1Password support for API keys - Also includes a standalone CLI with the same functionality Written in Rust. MIT licensed. Note: This is an unofficial community project, not affiliated with Lambda.
2 by odedfalik | 2 comments on Hacker News.
I built an unofficial CLI and MCP server for Lambda cloud GPU instances. The main idea: your AI agents can now spin up and manage Lambda GPUs for you. The MCP server exposes tools to find, launch, and terminate instances. Add it to Claude Code, Cursor, or any agent with one command and you can say things like "launch an H100, ssh in, and run big_job.py" Other features: - Notifications via Slack, Discord, or Telegram when instances are SSH-ready - 1Password support for API keys - Also includes a standalone CLI with the same functionality Written in Rust. MIT licensed. Note: This is an unofficial community project, not affiliated with Lambda.
Tuesday, January 13, 2026
Monday, January 12, 2026
New top story on Hacker News: Unauthenticated remote code execution in OpenCode
Unauthenticated remote code execution in OpenCode
30 by CyberShadow | 1 comments on Hacker News.
Previous versions of OpenCode started a server which allowed any website visited in a web browser to execute arbitrary commands on the local machine. Make sure you are using v1.1.10 or newer; see link for more details.
30 by CyberShadow | 1 comments on Hacker News.
Previous versions of OpenCode started a server which allowed any website visited in a web browser to execute arbitrary commands on the local machine. Make sure you are using v1.1.10 or newer; see link for more details.
Sunday, January 11, 2026
Saturday, January 10, 2026
Friday, January 9, 2026
New top story on Hacker News: Scientists discover oldest poison, on 60k-year-old arrows
Scientists discover oldest poison, on 60k-year-old arrows
11 by noleary | 1 comments on Hacker News.
https://ift.tt/S4tKpZ3
11 by noleary | 1 comments on Hacker News.
https://ift.tt/S4tKpZ3
Thursday, January 8, 2026
Wednesday, January 7, 2026
New top story on Hacker News: Polymarket refuses to pay bets that US would 'invade' Venezuela
Polymarket refuses to pay bets that US would 'invade' Venezuela
66 by petethomas | 33 comments on Hacker News.
https://ift.tt/taIlTUL
66 by petethomas | 33 comments on Hacker News.
https://ift.tt/taIlTUL
Tuesday, January 6, 2026
Monday, January 5, 2026
Sunday, January 4, 2026
New top story on Hacker News: Show HN: Hover – IDE style hover documentation on any webpage
Show HN: Hover – IDE style hover documentation on any webpage
8 by sampsonj | 0 comments on Hacker News.
I thought it would be interesting to have ID style hover docs outside the IDE. Hover is a Chrome extension that gives you IDE style hover tooltips on any webpage: documentation sites, ChatGPT, Claude, etc. How it works: - When a code block comes into view, the extension detects tokens and sends the code to an LLM (via OpenRouter or custom endpoint) - The LLM generates documentation for tokens worth documenting, which gets cached - On hover, the cached documentation is displayed instantly A few things I wanted to get right: - Website permissions are granular and use Chrome's permission system, so the extension only runs where you allow it - Custom endpoints let you skip OpenRouter entirely – if you're at a company with its own infra, you can point it at AWS Bedrock, Google AI Studio, or whatever you have Built with TypeScript, Vite, and the Chrome extension APIs. Coming to the Chrome Web Store soon. Would love feedback on the onboarding experience and general UX – there were a lot of design decisions I wasn't sure about. Happy to answer questions about the implementation.
8 by sampsonj | 0 comments on Hacker News.
I thought it would be interesting to have ID style hover docs outside the IDE. Hover is a Chrome extension that gives you IDE style hover tooltips on any webpage: documentation sites, ChatGPT, Claude, etc. How it works: - When a code block comes into view, the extension detects tokens and sends the code to an LLM (via OpenRouter or custom endpoint) - The LLM generates documentation for tokens worth documenting, which gets cached - On hover, the cached documentation is displayed instantly A few things I wanted to get right: - Website permissions are granular and use Chrome's permission system, so the extension only runs where you allow it - Custom endpoints let you skip OpenRouter entirely – if you're at a company with its own infra, you can point it at AWS Bedrock, Google AI Studio, or whatever you have Built with TypeScript, Vite, and the Chrome extension APIs. Coming to the Chrome Web Store soon. Would love feedback on the onboarding experience and general UX – there were a lot of design decisions I wasn't sure about. Happy to answer questions about the implementation.
Saturday, January 3, 2026
Friday, January 2, 2026
Thursday, January 1, 2026
New top story on Hacker News: Show HN: Feature detection exploration in Lidar DEMs via differential decomp
Show HN: Feature detection exploration in Lidar DEMs via differential decomp
3 by DarkForestery | 0 comments on Hacker News.
I'm not a geospatial expert — I work in AI/ML. This started when I was exploring LiDAR data with agentic assitince and noticed that different signal decomposition methods revealed different terrain features. The core idea: if you systematically combine decomposition methods (Gaussian, bilateral, wavelet, morphological, etc.) with different upsampling techniques, each combination has characteristic "failure modes" that selectively preserve or eliminate certain features. The differences between outputs become feature-specific filters. The framework tests 25 decomposition × 19 upsampling methods across parameter ranges — about 40,000 combinations total. The visualization grid makes it easy to compare which methods work for what. Built in Cursor with Opus 4.5, NumPy, SciPy, scikit-image, PyWavelets, and OpenCV. Apache 2.0 licensed. I'd appreciate feedback from anyone who actually works with elevation data. What am I missing? What's obvious to practitioners that I wouldn't know?
3 by DarkForestery | 0 comments on Hacker News.
I'm not a geospatial expert — I work in AI/ML. This started when I was exploring LiDAR data with agentic assitince and noticed that different signal decomposition methods revealed different terrain features. The core idea: if you systematically combine decomposition methods (Gaussian, bilateral, wavelet, morphological, etc.) with different upsampling techniques, each combination has characteristic "failure modes" that selectively preserve or eliminate certain features. The differences between outputs become feature-specific filters. The framework tests 25 decomposition × 19 upsampling methods across parameter ranges — about 40,000 combinations total. The visualization grid makes it easy to compare which methods work for what. Built in Cursor with Opus 4.5, NumPy, SciPy, scikit-image, PyWavelets, and OpenCV. Apache 2.0 licensed. I'd appreciate feedback from anyone who actually works with elevation data. What am I missing? What's obvious to practitioners that I wouldn't know?
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