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Ask HN: What are you working on? (April 2025)

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Re: Ask HN: What are you working on? (April 2025)

#571

Post by ddahlen »

jxjnskkzxxhx wrote: post #568
ddahlen wrote: post #522

I am about to begin a PhD in astronomy. Until last month I was working at Caltech for 3 years on code which calculates orbits of asteroids to high precision. This code is being used on several NASA telescopes now to predict when they will image known asteroids (NEO Surveyor, SphereX, maybe Roman eventually). I was allowed to open source it and I am planning on making it the basis of my PhD research: https://github.co…

Ever thought of making a presentation about this subject and putting it on YouTube? :-) It sounds really impressive.

I've never really dabbled in youtube. I have several projects/papers I am working on using this code, I have thought about writing some blog posts as I publish those. But a PhD is going to be a major time sink, we will see what happens.

Re: Ask HN: What are you working on? (April 2025)

#572

Post by precompute »

vishalontheline wrote: post #423

OkNext! ( https://oknext.io ) - a task manager for solopreneurs and small teams. I'd love for you to try it out! It is browser based only for now and pretty basic. I'm adding features sparingly as needed but my next task is to add some documentation for brand new users and making what it can already do more obvious.

A dense UI, nice.

Re: Ask HN: What are you working on? (April 2025)

#573

Post by nathan_douglas »

jviotti wrote: post #400

Premium tooling to work with JSON Schema ( https://www.sourcemeta.com ). I'm a member of the JSON Schema Technical Steering Committee, and been making a living consulting with companies making use of JSON Schema at large. Think data domains in the fintech industry, big OpenAPI specs, API Governance programs, etc. The tooling to support all of these use cases was terrible (non-compliant, half-baked, lack of advanced f…

That's really neat. I've been doing some JSON schema work on our products recently, especially trying to take a schema and generate info compliant with the schema for e.g. testing accounts with clean data on non-production environments, etc. I feel like the area's underdeveloped.

Re: Ask HN: What are you working on? (April 2025)

#574

Post by xarici_ishler »

Ni3l55 wrote: post #430
xarici_ishler wrote: post #8

The first ever SQL debugger – runs & visualizes your query step-by-step, every clause, condition, expression, incl. GROUP BY, aggregates / windows, DISTINCT (ON), subqueries (even correlated ones!), CTEs, you name it. You can search for full or partial rows and see the whole query lineage – which intermediate rows from which CTEs/subqueries contributed to the result you're searching for. Entirely offline & no usage o…

Cool! We're dealing with many complex CTEs and costly queries. Would be useful to have those visualized one by one.

What database are you using? I'd be happy to hear about your usecases and hopefully help you, shoot me an email (in profile)

Re: Ask HN: What are you working on? (April 2025)

#575

Post by clintmcmahon »

A simple coffee shop app that shows the nearest coffees shops that are closest to you. Using Google's AI, each shop has a Gemini AI overview that describes the shops offerings and other information that might be useful to the user.

I've only built it for Minneapolis and Chicago for now.

https://mplscoffee.com

Re: Ask HN: What are you working on? (April 2025)

#577

Post by tetris11 »

mon_ wrote: post #503
tetris11 wrote: post #280

A tree cutting tool. Take photos of the tree from 6 different angles, feed into a 3D model generator, erode the model and generate a 3D graph representation of the tree. The tool suggests which cuts to make and where, given a restricted fall path (e.g. constrained by a neighbors yard on one side). I create the fallen branches in their final state along the fall plane, and create individual correction vectors mapping…

How does the graph representation help you solve the problem?

I was mixing methods, sorry. My initial rendition for solving the cuts would initialise a somewhat sparse network from tree to ground, and solve for non-overlapping paths.

This became convoluted and I just opted for a far easier method of solving vector intersections.

Its also not perfect since I haven't factored in rotation origin very well, and I'm now pursuing a far simpler physics-based approach

Re: Ask HN: What are you working on? (April 2025)

#578

Post by SN76477 »

I find tracking movies and series I have watched with my partner an impossible task. Spreadsheets are too fiddly for my partner, and I want to look up what is next on my phone so I have turned to Airtable and n8n for automation.

input a relevant url, it will decide if it IMDB or Youtube or a list. using an llm, it will attempt to extract the movies or series from the list and find the relevant IMDB link.

Then I have a masonry view of movies & series I have and have not watched, sortable by tags that I can rate and add notes to.

Re: Ask HN: What are you working on? (April 2025)

#579

Post by nathan_douglas »

thehappyfellow wrote: post #401

Learning Rust by building a simple database using it. I’ve done my share of programming languages (PHP, C++, Python, Ruby, Haskell) and for the last 10 years I’ve been working in OCaml (which I love so much ) but Rust would be a nice addition IMO. And I never implemented LSM style database before! So that’s fun. I only just started and the pace will be slow (I have 3h/week to spend on it on a good week), if you are c…

LOL, love the name.

LSM style should be an interesting path, especially when it comes to optimization.

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