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Ask HN: What Are You Working On? (Nov 2025)

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Re: Ask HN: What Are You Working On? (Nov 2025)

#203
I'm working on a video / post on how to solve the 1 billion row challenge (https://github.com/gunnarmorling/1brc) and get a competitively fast result while keeping the code readable and maintainable.

So far I'm within spitting distance of the winning entries without using any unsafe code or bit twiddling tricks or custom JVMs or anything like that, and having all the concerns nicely separated and modularized.

Excited to share soon!

Re: Ask HN: What Are You Working On? (Nov 2025)

#204
Scratching my own (and my employer's, but they don't know that) itch and building a knowledge management system as a nerdy way of spending evenings. I refused to learn JS for years, but turns out it's not as bad as I thought, and TS makes it really nice, plus I like (to my surprise) SolidJS' JSX interpretation quite a lot. Half vibe-coded, half breaking things and learning a lot.

Re: Ask HN: What Are You Working On? (Nov 2025)

#208

Currently working on a take on Pokémon GO + Pokémon Snap but for birding. The goal is to explore your neighborhood, find birds, take good photos of them all. Next month, I'll be doing an event to find a rare bird, excited to see how it goes! It's still a small closed alpha, if anyone is interested: https://testers.birdlego.com Here is a rough trailer of it: https://www.youtube.com/watch?v=yVpR8aafFjI

I got super excited thinking this was for real birds. I would love someone to gamify birding.

Re: Ask HN: What Are You Working On? (Nov 2025)

#210
Added compression to my metal 3D printer slicer exported CAM files, and refactored the code to better support larger volumes.

Tweaking the piezoelectric driver PCB design for the micro-positing microscopy stage project. The Nanomotion piezoelectric motors were not meant to be used in the manner I chose, but it is fun to push the limits of technology.

Finishing up some custom 1U mounted hardware, and getting a batch of test PCB soon. Bend radius came back 1mm oversize, but this was acceptable for a single run item.

Also involved in several other projects maybe 3 people would care about. Doing a custom FPGA PCB is not very fun unless encountering that rare class of problem CPU/MCU simply can't handle cleanly. =3

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