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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)

#22
I'm working on a correlation matrix with Svelte 5.

It has hierarchical clustering, rolling correlation charts, a minimap, time series data detrending, and 2D matrix virtualization (to render only visible cells to the DOM).

It has up to 130K matrix cells and correlates up to 23.5M time series data points.

https://covary.xyz

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

#23
Schematic and PCB design relating to Lighting and Control Systems for my main job. Schematics and PCB Design after hours as a contractor too, because I have a daughter now, my wife can't work, and life has become /very/ expensive in Sydney.

What I'd love to be working on: Try to initiate a high voltage arc through the air to a target device, and modulate it to send "Data over Lightning", like Alyx does in Half-Life 2. It won't work the way it does in the game, but I'd it's an idea I've had for a long time and I'd love to prototype it some day.

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

#28
Very early stage, no link, but I have been working on getting terminal fonts (like Cascadia Code) to work in the browser more progressively without requiring such a giant single download, and on using them for text-based animations. One of those unimportant, low-stakes kind of projects that makes it relaxing to work on :P.

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

#30
I have two:

The first is a preventive maintenance and calibration tracker (https://pmcal.net) that was born out of my day job as an engineer in small business manufacturing.

The second is an AI engine for pulling structured data out of incoming email (either via IMAP on your email server or via SES). If you think of the engine that powers TripIt, they had to write about 10,000 different ingestors for each airline and hotel and travel booking site. With a structured output AI, the need to write specific ingestors goes away.

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