Show HN: I made a 3D printed VTOL drone https://ift.tt/w0XrbJh

Show HN: I made a 3D printed VTOL drone I made this 130 mile capable VTOL drone in only 90 days. It can fly for 3 hours on a single charge. That would make it one of the longest range and endurance 3D printed VTOLs in the world. This is the thing I'm most proud of building to date! Before this project, I was a total CAD, 3D printing and aerodynamic modeling beginner. I had only built and flown one VTOL before. SPECS Wingspan: 3.9 ft (1200 mm) Length: 2.5 ft (770 mm) Weight: 5.6 lb (2.55kg) Airframe: foaming PLA (Bambu PLA-Aero) and PETG structural parts printed on A1 printer, CFRP booms and spars Battery: Li-ion silicon anode Amprius SA08 cells, 6s2p pack by Upgrade Energy Motors: 2807 AOS for lift and cruise (unoptimized) Lifting ESCs: 4 in 1 Holybro Tekko32 F4 45A Cruise ESC: Flycolor Raptor 5 45A Lifting and cruise props: 7042 Gemfan (unoptimized) Flight controller: Speedybee F405 Wing GPS: M10 Firmware: Ardupilot 4.6.0 --- This video edit ended up shorter than I planned. Being my first Youtube video with significant post production effort, I underestimated the work required to make a longer in-depth video with voiceover, edited footage, etc. https://ift.tt/E4jM0se June 11, 2025 at 02:17AM

Show HN: A "Course" as an MCP Server https://ift.tt/UyCqPGd

Show HN: A "Course" as an MCP Server We wanted to build a course for new Mastra devs to get started quickly. However, we knew videos would go out of date and be more difficult to maintain. We decided to launch our "course" as an MCP server. This way your coding agent actually teaches the course content to you and can help you write the code. We think this is a really interactive way to learn. Using an editor with MCP support (such as Cursor, Windsurf, or VSCode), your code agent will call the appropriate MCP tools which will return context for the agent. This context tries to instruct the agent that it should be teaching you the content, not just doing the work for you. The course is still pretty experimental and some models work better than others. Code is available in the Mastra Github repo in the mcp-docs-server package ( https://ift.tt/1pTFDHP... ) https://ift.tt/ATsrYib June 11, 2025 at 02:06AM

Show HN: MidWord – A Word-Guessing Game https://ift.tt/7ZjtMfe

Show HN: MidWord – A Word-Guessing Game https://midword.com/ June 11, 2025 at 12:12AM

Show HN: RenderDay: A GPU-only render farm for Blender https://ift.tt/6FVDYQn

Show HN: RenderDay: A GPU-only render farm for Blender Hey HN! I recently had to render my first longer Blender animation, and I found myself pretty frustrated with the existing render farms out there. Everything I tried was either buggy, overly complicated (I really don’t want to pick from a huge list of hardware options), or just *really* expensive. So, I did what anyone would do.. I built my own solution: https://renderday.com - a GPU-only render farm for Blender that’s super fast and dead simple to use. You just: 1. Upload your `.blend` file 2. Pick your settings 3. Get a price, pay, and render - done No subscriptions, no upfront costs, no contracts - just pay as you go. I pull in daily GPU prices from multiple providers (with a tiny margin to keep the lights on), so the pricing is transparent and competitive. Under the hood it's running on NVIDIA L40S GPUs (48GB RAM), with access to over 1,000 GPUs globally. Currently supports: * Blender 4.3 and 4.4 (can add more if needed) * Cycles and EEVEE * Real-time progress tracking with live preview frames * Full file encryption, auto-deletion after 30 days, no access/sharing --- But more importantly: I'd really appreciate your feedback. This started as a personal itch, but I want to build something genuinely useful for the Blender community - especially indie creators and small studios who can't afford big monthly plans or don't want to deal with complicated setup. - What do you wish render farms did better? - What features are missing for you right now? - Would you use something like this - and if not, why not? Would love to hear your thoughts - good or bad - so I can keep improving it. Thanks for reading! Sascha https://renderday.com June 10, 2025 at 02:24AM

Show HN: I made a mobile app that turns your step count into a race https://ift.tt/sV4EDyI

Show HN: I made a mobile app that turns your step count into a race I just launched my first-ever mobile app. It’s called STEPRACERS, a game where you compete with friends by tracking your steps. The idea came from someone close to me who completely changed their life by focusing on their health. Every night, they’d send me their step count - a small, daily ritual that became a powerful reminder of progress. So I turned it into a game. It’s fun. It’s simple. And it might just push you to hit your 10k steps a day. https://ift.tt/qNIgAsS June 10, 2025 at 02:28AM

Show HN: Somo – a human friendly alternative to netstat https://ift.tt/8PkUyH4

Show HN: Somo – a human friendly alternative to netstat https://ift.tt/N1UQTbi June 9, 2025 at 11:29PM

Show HN: Munal OS: a graphical experimental OS with WASM sandboxing https://ift.tt/cA2YOyd

Show HN: Munal OS: a graphical experimental OS with WASM sandboxing Hello HN! Showing off the first version of Munal OS, an experimental operating system I have been writing in Rust on and off for the past few years. https://ift.tt/s4ZHFYo It's an unikernel design that is compiled as a single EFI binary and does not use virtual address spaces for process isolation. Instead, applications are compiled to WASM and run inside of an embedded WASM engine. Other features: * Fully graphical interface in HD resolution with mouse and keyboard support * Desktop shell with window manager and contextual radial menus * PCI and VirtIO drivers * Ethernet and TCP stack * Customizable UI toolkit providing various widgets, responsive layouts and flexible text rendering * Embedded selection of applications including: * A web browser supporting DNS, HTTPS and very basic HTML * A text editor * A Python terminal Checkout the README for the technical breakdown. Demo video: https://ift.tt/KOfLlGb https://ift.tt/s4ZHFYo June 9, 2025 at 11:04PM