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Posted by david927 13 hours ago

Ask HN: What are you working on? (June 2026)

What are you working on? Any new ideas that you're thinking about?
178 points | 671 commentspage 6
loganboyd 10 hours ago|
I’m working on a tensor computing language/compiler called i with a simple explicit scheduling model (loop splitting, loop ordering, input “staging”). These mechanisms alone are enough to express complex algorithms like FlashAttention, generating target code with techniques like loop fusion, minimized intermediate allocations, and “online” reductions.

Right now there is a runtime and compiler targeting C, written in dependency-free Rust, and a minimal Python frontend. The project is very much proof-of-concept stage so not yet fast. Working on a CUDA backend now.

The goal is to enable automatic discovery of FlashAttention-style optimizations which is not feasible with current compilers.

Very open to feedback/discussion from anybody interested in or knowledgeable about tensor compilers!

repo: https://github.com/ilang-dev/i

tartieret 2 hours ago||
After ~20 years of long-haul travel, I spent the last 9 months building Jetlag Coach, in parallel with my busy life (full time job toddler and pregnant wife!). You give it your chronotype and your actual itinerary (multi-leg and layovers included) and an optimization engine generates a personalized schedule for light, sleep timing, caffeine and melatonin to shift your circadian clock toward the destination time zone.

At core it turned out to be a complex optimization problem and a real challenge to tackle. I also put a lot of care in the UI/UX, while I usually focus more on backend work. It's working well, I am just finalizing the handling of some of the nastier edge cases

https://www.jetlagcoach.com

gbro3n 12 hours ago||
https://www.asnotes.io - a Foam / Dendron / Obsidian / Logseq alternative with tasks, kanban board, static site publishing for VS Code

https://www.agentkanban.io - Github Copilot / Claude Code integrated Kanban board with context management

https://www.asmusictheory.com - Music Theory lessons, tools, including piano roll with midi in the web browser

holistio 12 hours ago|
awesome, your notes and music theory apps are very close to two of my hobby projects as well, the main difference is that my music app is guitar-centric

unfortunately, I did not have the time to pursue them. good luck to you!

zacharyfmarion 5 hours ago||
I’m working on a web app called Pitch coach. It has vocal exercises and shows you in real time whether you are flat or sharp. Everything is saved in browser so there’s no account creation. Coolest part is that you can upload a song and it will split the vocals, recognize all the vocal pitches and then you can sing along. Crazy how much you can do in the browser these days! https://pitch-coach.pages.dev
GoToRO 2 hours ago||
I had a good laugh, I can't sing. Stuck on Get ready. Was there something that was supposed to happen after that? Anyway, play/pause button is too high up, I was looking for it at the bottom of the screen. I like the UI.
aguacaterojo 5 hours ago||
This is very fun. Having just tried it with my maybe tone deaf partner, she showed progress when she sang at the same time as the notes. It might be good if there was like a faster looped version where the notes would play more frequently.
Folcon 5 hours ago||
In the current climate, I've decided to explore building games, so I'm building a management game about turning chaotic fields of research into fundable products, fitting for Hacker News I think ;)

The concept was, what if Theme Hospital was about Victorian-esq research institution instead of a hospital? You hire strange scientists, have them explore dangerous fields of research, collect messy findings, turn them into theories, prototypes and eventually products, all the while trying to convince investors they're worth funding before they hit the market and work out what they might actually be worth

The gameloop is broken down into two parts, Exploration / Discovery and Exhibition, the closest comparison I have for the first part is take Kerbal Space Program, but focus it on Mission Control rather than the astronauts

While the mad scientists are going into weird, unstable research domains, the player is managing the institution around them, funding, equipment, research direction, safety

On the other side as you discover interesting things or successfully develop prototypes worth showing off, have investors show up and see what excites them, will they give you more funding? Push a grant your way? How are you going to keep this circus going?

You're balancing two plates, you need to invent tools to delve deeper and if you don't keep finding exciting new discoveries, your investors will slowly get bored of you

franciscop 4 hours ago||
I just wrapped up https://llmrender.com/, a tiny (10kb) Markdown to React renderer works with all of the Markdown + LaTeX math you'd normally expect in a normal project.

I made it because doing one of the mainstream Markdown renderers + Katex (LaTeX) + Prism.js (syntax highlight) adds 300kb of gzipped JS to the frontend projects, so with this you can have it all for just 10kb. It also works well with streaming/does stable partial rendering.

It supports features usually reserved for LLM chatbots, but also for normal everyday Markdown, so feel free to use it or give feedback!

bmalicoat 4 hours ago||
Building a gameboy speaker from scratch. Kind of like a record player or mini disc player, but using gameboy and gameboy color games. Trying my best to document the process https://www.youtube.com/shorts/MQ16pvz3xeQ

Lots of fun and novel problems to solve across hardware, software, firmware, enclosure, legality, manufacturability! It also got me collecting random carts just to hear the incredible music locked away (some samples at the end of this video https://www.youtube.com/shorts/7naKAga8hAE )

biggestriverman 12 hours ago||
When I was working at amazon (left May 8) working on agents was all the rage. Combined with initiatives that set goals for nearly all services to have a MCP built and available by the end of the year agents will be even more emphasized in the future.

However what happens when you actually build and launch your agent is customers try it, do some initial runs and then go ask your manager to automate their use case. That is why I have been building https://toolscaled.com/ The goal being work through your problem space using agentic chat (like Claude Desktop) and then at the end convert it to a workflow. I am pretty close to launching and have been testing. If you're interested send me an email! (if you do sign up just fyi its still in beta so YMMV.

Havoc 11 hours ago|
Interesting to hear that Amazon is doubling down on mcp
BSTRhino 7 hours ago||
https://easel.games

Still working on my programming language which makes your game multiplayer automatically. Currently working on improving the tutorials. When writing the tutorials I followed the "focus on the action" principle from Diataxis (https://diataxis.fr/tutorials/) perhaps too much. Easel is a unique language in a number of ways and it really does actually have to be taught, so I'm trying to make it do a better job of that.

deosjr 11 hours ago|
Working on my version of Dynamicland. Today I got this small thing working where I can now live-edit the behaviour of the editor script, see https://www.youtube.com/shorts/ZjxPIv-XwoU

Repo is here if anyone wants to have a look: https://github.com/deosjr/unreal-talk

And a browser-based version can be found here: https://deosjr.github.io/dynamicland/live

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