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Ask HN: What Are You Working On? (March 2026)

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Re: Ask HN: What Are You Working On? (March 2026)

#541

Post by anotheryou »

Delving on to personalized software again now that AI agents code it for me with little hand holding.

Instead of building scrips here and there I'm attempting my own everything app. Lets see if that's a good idea :).

Starting with android home screen and widget sync to server/desktop. So e.g. calendar notifications happen desktop first, then escalate to mobile etc. Also phone as mousepad (for using my projector from bed). Just feature creeping it all in without regrets so far.

In general I feel like feature creep needs to be reevaluated. UX must not be destroyed, but features cost less now.

Re: Ask HN: What Are You Working On? (March 2026)

#544

Post by f_k »

https://citellm.com

Building CiteLLM, an API that extracts structured data from PDFs and returns exact source locations for every field.

There's also a widget so you can add click-to-verify to your own app in a few lines of code.

Click any value, jump straight to the highlighted source in the PDF.

Demo: https://citellm.com/demo

Re: Ask HN: What Are You Working On? (March 2026)

#545

Post by thomasmg »

Since about two years I'm working on a new systems programming language [1] that is supposed to be nearly as fast as C, memory safe, and as concise and easy to learn as Python. Right now I'm trying to integrate Perceus, the ref-count optimization of Keka.

[1] https://github.com/thomasmueller/bau-lang

Re: Ask HN: What Are You Working On? (March 2026)

#546

Post by [deleted] »

Mackser wrote: post #394

Cakedesk: Fast & simple invoicing app for small businesses (Windows & Mac). Been working on this for about 4 years. It has some cool features, like letting you create your own PDF templates with HTML/CSS. Most users love that it's so simple and just a one-time purchase. Currently thinking about how to implement an Obsidian-style cloud sync feature since that gets requested a lot. https://cakedesk.app

[deleted]

Re: Ask HN: What Are You Working On? (March 2026)

#547

Post by fasterik »

I wanted to learn more about computer graphics, so I'm writing a 3D software renderer in C. So far I have a solid implementation of triangle rasterization, perspective projection, depth buffer, clipping, texture mapping, diffuse lighting, and gamma correction. Currently struggling with shadow mapping, which is the last feature I'll add to the renderer before moving on to procedural generation of meshes and textures.

Once I'm done with this project I'm planning on making a series of YouTube videos going into the code and the algorithms.

Re: Ask HN: What Are You Working On? (March 2026)

#548

Post by tr3ntg »

YesBox wrote: post #59

I changed gears and moved into the video games industry at the end of 2021. I started developing a city builder called Metropolis 1998 [1], but wanted to take the genre in new directions, building on top of what modern games have to offer: - Watch what's happening inside buildings and design your own (optional) - Change demand to a per-business level - Bring the pixel art 3D render aesthetic back from the dead (e.g R…

Logged in to agree with all the other comments: this is so, so pretty. Will try the demo soon.

Re: Ask HN: What Are You Working On? (March 2026)

#549

Post by looperhacks »

tomwojcik wrote: post #317

Since subreddits related to identifying AI images/videos got very popular, my wife started to send me cute AI generated videos, older family members can't distinguish AI videos at all, I've decided to code a weekend side project to train their Spidey sense for AI content. https://IsThisAI.lol The content is hand picked from tiktok, Instagram, Facebook, Reddit and other AI generating platforms. Honestly I don't know w…

How do you know that the videos are AI or not? For many of them it's pretty clear, but I imagine not every user is labelling their AI uploads properly

Re: Ask HN: What Are You Working On? (March 2026)

#550

Post by davehcker »

Building wireless (LTE-based) sensors for most major horticultural sensing needs. Measurements include:

- CO2. Side note: I was surprised to find that most (all?) CO2 sensors used in closed plant production setups are not meant to operate below 400 ppm.

- Air temperature, pressure, relative humidity

- Photosynthetically Active Radiation (PAR)

- Addons like: wind speed, wind direction, soil moisture and Electrical Conductivity (EC)

- The coolest and most challenging: pH, EC, and flow rate

The hardest part has been running everything on battery while maintaining accuracy and using LTE (2–4G) and not common LPWAN options like LoRa. I'm primarily a software guy, so the learning curve has been huge.

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