Show HN: Mashy – Nine short holes of pixel golf https://ift.tt/vcQuHk6

Show HN: Mashy – Nine short holes of pixel golf I built this 9 hole pixel golf game last week to challenge my mates, let me know what you think :) https://playmashy.com/ October 6, 2026 at 12:02AM

Show HN: Minigraf – An embedded, bi-temporal graph database in Rust https://ift.tt/gPqh0cw

Show HN: Minigraf – An embedded, bi-temporal graph database in Rust A successor project to my previous attempt at building a temporal graph database ( https://ift.tt/MZvpQ3i ). This one builds on its predecessor's concept, but drops the dependency on another database to provide the storage, transaction and query engines. Minigraf is self-contained, packaged as a library crate, embeds into your application, and supports full bi-temporality. https://ift.tt/3v4Inyi October 5, 2026 at 01:18AM

Show HN: I made Claude Code quiz me on my German mistakes while it works https://ift.tt/GgKpjoZ

Show HN: I made Claude Code quiz me on my German mistakes while it works October 5, 2026 at 01:24AM

Show HN: A live chat on a 3D globe that you can join from any IRC client https://ift.tt/USDF09X

Show HN: A live chat on a 3D globe that you can join from any IRC client https://ift.tt/w8WRyBG October 4, 2026 at 10:10PM

Show HN: I built a vacation optimizer and later found out tools like this exist https://ift.tt/O4uRwpH

Show HN: I built a vacation optimizer and later found out tools like this exist https://ift.tt/m7eUwyP October 4, 2026 at 05:49AM

Show HN: Astera: An ad-free stargazing app for Android https://ift.tt/E5gsu3O

Show HN: Astera: An ad-free stargazing app for Android https://ift.tt/5KUQ27F October 4, 2026 at 04:16AM

Show HN: AstroHelm – Use your phone camera to aim a telescope or telephoto lens https://ift.tt/0J1lvp7

Show HN: AstroHelm – Use your phone camera to aim a telescope or telephoto lens Hello HN! As an amateur astronomer living in New York City, finding objects in the night sky has always been a huge challenge. I thought about using the smartphone's gyroscope and magnetometer, but the accuracy left a lot to be desired. Then I learned about plate solving: given a picture of the sky, we can determine exactly where in the sky the camera was pointing by identifying the star pattern. This was a much better fit - as long as the phone and the optics are rigidly connected, we can repeatedly photograph the sky and determine the pointing direction with very high accuracy. A lot of work was done to design an algorithm that works reliably with smartphone cameras, which have limited light sensitivity and wider field of view which includes buildings and trees. I experimented a lot with machine learning, and to my surprise, traditional CV methods actually performed better at extracting stars from the image. The result is AstroHelm, an iOS and Android app that helps figure out where your telescope or camera is pointing, and guides you to the object of your choice. Just follow an arrow on screen, and the object will land right in your eyepiece or viewfinder. Everything happens on device, and no internet connection is required. AstroHelm is free to use and comes with beginner-friendly objects selected for each night. Optional one time purchases unlock more objects and advanced features, such as interoperability with other astronomy software. I am also proud to partner with astronomy clubs and organizations to offer free licenses for outreach. I hope AstroHelm can make it a little easier to discover the wonders of the night sky, and I look forward to your feedback! https://astrohelm.app/ October 4, 2026 at 04:01AM