Show HN: I made a tiny device for automatically recording digital pianos https://ift.tt/J4bQSzH

Show HN: I made a tiny device for automatically recording digital pianos Hey HN! A few years ago, I left my cushy big tech job to make hardware. And made the device I always wanted - an automatic piano recorder! I usually play piano improvisationally, and manually hitting record never meshed well with that. But there are always moments I wish I recorded, and now they are! Hopefully it scratches a similar itch for some of you as well! A few of the tech details: * built on an esp32-s3 * custom injection molded enclosure * BLE comms, sd card storage, DS1302 RTC * android & ios apps with Flutter * Shadertoy vfx support for video sharing - Chip https://jamcorder.com/ November 8, 2024 at 05:11AM

Show HN: Dracan – Open-source, 1:1 proxy with simple filtering/validation config https://ift.tt/VJSkeWp

Show HN: Dracan – Open-source, 1:1 proxy with simple filtering/validation config If you are tired of using Apache or Nginx to proxy your app and implement validation or limiting you may be interested in this hobbyist project. Thanks for all feedback. https://ift.tt/3z2TN0d November 10, 2024 at 05:45AM

Show HN: Jaws – a JavaScript to WASM ahead-of-time compiler https://ift.tt/roWkiaP

Show HN: Jaws – a JavaScript to WASM ahead-of-time compiler I've open sourced a JavaScript to WASM compiler. It's an experimental tool, but given the semantics I already implemented, I'm fairly certain I am able to eventually cover 100% of JavaScript spec. Any ideas, questions or critique welcomed! If you are interested in WASM, especially with new proposals like WASM GC or exception handling, it might be a good source of seeing these features in action - the project has a few thousand lines of hand written WAT so far. https://ift.tt/kAZrJdU November 9, 2024 at 11:44PM

Show HN: Akas: A Micropodcasting App https://ift.tt/XRlMHyz

Show HN: Akas: A Micropodcasting App App store: https://ift.tt/95aOZJM... Play store: https://ift.tt/bumnE6V... Site link: https://akashq.com Invitation code: BVN55L https://www.akashq.com/ November 10, 2024 at 12:15AM

Show HN: RL Agent that can auto-optimize your LLM prompts https://ift.tt/d6qbVgx

Show HN: RL Agent that can auto-optimize your LLM prompts Hey everyone! Along with my team, I've developed a reinforcement learning system that automatically optimizes LLM prompts, complete with a visualization feature to track both prompt structure and learning progress over time. Take a look here: https://ift.tt/ziSRNAT... Check out our website too: https://ift.tt/uzB0Yvt In terms of how this visualization works: The RL Prompt Optimizer employs a reinforcement learning framework to iteratively improve prompts used for language model evaluations. At each episode, the agent selects an action to modify the current prompt based on the state representation, which encodes features of the prompt. The agent receives rewards based on a multi-metric evaluation of the model's responses, encouraging the development of prompts that elicit high-quality answers. And see our github repo! https://ift.tt/5AbVCz3 https://ift.tt/1INgLry November 9, 2024 at 01:47AM

Show HN: Tuki – A GitOps tool for safely running one-off commands in production https://ift.tt/AwG8q6O

Show HN: Tuki – A GitOps tool for safely running one-off commands in production Tuki is a small, open-source utility that lets you run one-off commands in production through Git, bringing version control and code review to production scripts. I built it after accidentally dropping a production table due to a console typo Key features: - Run scripts through Git PRs instead of direct console access - Built-in auditing via Git history - RBAC through standard Git permissions - Simple setup for non-Kubernetes environments - MIT licensed Demo & more details: https://ift.tt/YiLVRf9 Announcement blog post: https://ift.tt/MVHwAqb Would love feedback from the HN community! https://ift.tt/YiLVRf9 November 9, 2024 at 12:04AM

Show HN: A macOS app and window activity tracker https://ift.tt/W1eyTFo

Show HN: A macOS app and window activity tracker https://ift.tt/u0zPNod November 8, 2024 at 08:46PM