标签：#ha

Commodity FDM print strength is limited by poor Z-axis layer bonding. Parts crack along Z under stress. MAGMA tries to fix this in software that works on any FDM 3D printer. It's a fork of OrcaSlicer with a new infill type that creates paired U-shaped vertical channels inside the print, plus G-code that injects molten plastic into those channels to bridge Z layer interfaces with continuous plastic. Big caveat: I have a junky Ender 3 and haven't gotten a clean physical print yet. Don't expect thi

MacOS 27 Golden Gate will usher in a bunch of changes to the Mac when it's released later this year, with its biggest new features revolving around Siri AI. But for now, using the first developer beta, Siri AI is only offered through a waitlist. So what's available to try is mostly about how the […]

OpenAI has shipped more developer-facing infrastructure in the first half of 2026 than in the prior two years combined. GPT-5.5 is live. The Agents SDK is production-ready. Codex hit 5 million weekly active users. And yet most of the coverage is about ChatGPT's chat UX. Let's skip that and talk about what actually matters: ChatGPT's biggest upgrade ever and what developers actually need to know in June 2026. What changed at the API layer, which features are production-grade versus demo-ware, and whether it's finally time to move workloads back from Claude or Gemini. I spent the last two weeks migrating an internal agent pipeline from the Chat Completions API to the new Responses API. The difference is not subtle. This isn't a model bump with a new blog post. It's a platform rearchitecture. ChatGPT's Biggest Upgrade: The Responses API Changes Everything Forget GPT-5.5 for a second. The single most important change for developers building on OpenAI is the Responses API . If you've been building with Chat Completions, you know the drill: you manage conversation history client-side, pass the full message array on every request, and bolt on your own tool-calling orchestration. The Responses API eliminates most of that. Three things that actually matter: Server-side conversation state. OpenAI manages conversation history for you now. No more serializing and replaying message arrays on every call. For long-running agentic sessions, this alone cuts your infrastructure code in half. The reasoning_effort parameter. You can tell the model, per request, how much compute to burn on chain-of-thought reasoning before answering. Low effort for latency-sensitive paths like autocomplete and classification. High effort for accuracy-critical ones like analysis and code generation. Neither Claude nor Gemini expose anything equivalent at the API level right now. Background Mode. This is the one that changes architectures. Fire off a long-running task. Get results via webhook callback ins

Hi HN. My name is Andrey. On a regular business day, I'm a software engineer working at AWS. Outside of work hours, I spend time on my hobby - writing code. I was once building a pet project that allowed customers to spin up fully synchronized blockchain nodes within just a few minutes. The backend was split into a control plane and a data plane, each with its own AWS account. Later I added two more AWS accounts. One for shared RPC nodes. One for the Analytics Service. Since I love to visualize

IBM and HashiCorp have announced new LDAP secrets management capabilities in IBM Vault Enterprise 2.0, introducing a redesigned architecture to manage LDAP credentials, support password rotation, and automate the identity lifecycle. By Craig Risi

Hello HN, I am the founder of Agora Cosmica. This started about three years ago. On a walk I asked a chatbot to interpret the cave dream from Cormac McCarthy's book "The Road" as C.G. Jung. It gave me a perspective I had not thought of. But for my own dreams the policies of the big providers felt wrong for so personal conversations, as zero data retention is not available. So I started building. The project evolved to a German nonprofit and we published the code (AGPL-3.0) last month. The conten

Just for fun and self education, I've built this over a weekend to teach myself why orbits exist, not just show planets going around. Something that was never clearly explain to me in school. It opens with a guided tour that builds the idea up step by step: two bodies and the equal/opposite force, inertia (the Sun is removed and Earth just drifts straight), then "an orbit is falling and continuously missing," cosmic velocities with a little rocket, Voyager 1 & 2's real gravity assists (the clock

🏆 This is a submission for the June Solstice Game Jam 🎯 What I Built Turing's Frequency is a browser-based rhythm game where you decrypt encrypted radio signals by listening to musical patterns and recreating them. Each signal carries a message from a historical figure who changed the world — voices that were silenced, ignored, or forgotten, now restored through your rhythm. 🎮 👉 PLAY THE GAME LIVE 👈 📖 The Story The game is set in 1954 , on the desk of Alan Turing at the University of Manchester. A radio crackles with fragmented transmissions — encrypted messages carrying words of Pride , resistance , and identity . You are a student who has found Turing's last notebook, and with it, the key to decrypting these signals. 🌅 The connection to the June solstice: As you decrypt each signal, the screen literally brightens — from near-darkness to a flood of golden light. The solstice is the moment light and dark trade places, and this game makes that transition tangible. 🎬 Video Demo 👆 Watch the full gameplay loop: title → story → rhythm gameplay → decrypted messages → victory screen with solstice light effect. 🕹️ How to Play Key Action 1 2 3 4 Play notes ↑ ↓ ← → Arrow keys (alternative) Space / Enter Advance screens 🎧 Listen to the signal pattern 🎹 Repeat the notes in order 🔓 Decrypt the message 🌅 Restore the voice 💻 The Code The entire game is a single HTML file (~32KB) with zero external dependencies . No frameworks, no libraries, no asset files — just HTML, CSS, and vanilla JavaScript. mamoor123 / turings-frequency Turing's Frequency - A Rhythm of Light. June Solstice Game Jam 2026 entry. ⚡ Key Technical Decisions 🔊 Web Audio API for all sound: Every tone is synthesized in real-time using oscillators. The game uses a pentatonic scale (C4, E4, G4, C5) so every combination of notes sounds pleasant. No audio files needed. function playTone ( freq , duration = 0.3 , type = ' sine ' , volume = 0.3 ) { const osc = audioCtx . createOscillator (); const gain = audioCtx . create