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

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

#111
I am working on https://vimgolf.ai , a site where users play vim golf with each other and try to beat a bot powered by O3.

I've been meaning to wrap the project up for a while. Went down a rabbit hole trying to make the vim containers fault tolerant and scalable using kubernetes. But, after a friend told me I could do everything using cloudflare containers, I've been changing my backend to use that instead.

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

#112
I was hoping to make a piano practice assistant for my kids, that would take sheet music in MusicXML format, listen to the microphone stream, and check for things they frequently miss like rests, dynamics, consistent tempos.

Surprisingly the blocker has been identifying notes from the microphone input. I assumed that'd have been a long-solved problem; just do an FFT and find the peaks of the spectrogram? But apparently that doesn't work well when there's harmonics and reverb and such, and you have to use AI models (google and spotify have some) to do it. And so far it still seems to fail if there are more than three notes played simultaneously.

Now I'm baffled how song identification can work, if even identifying notes is so unreliable! Maybe I'm doing something wrong.

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

#116
A super hacky, OAI Codex/Cursor built dungeon master in your console. Started as "can I build this while riding in the car using codex?" to maybe taking it a little too far. I was happily surprised by the quality of the Wayfarer model.

https://github.com/derekburgess/dungen

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

#117
I’m working on Reflect [0], it’s a private self discovery and self experimentation app. You can track metrics, set goals, get alerted to anomalies, view correlations, visualize your data, etc.

[0] https://apps.apple.com/us/app/reflect-track-anything/id64638...

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

#118
I went Yak shaving.

For my 3D audio project I need an affordable way to make plastic cases. I felt like injection molding services are way overpriced, so I decided to make the molds in-house. Turns out, CNC milling is overpriced, too. As are 5 axis CNC mills. So in the end, we built our own CNC machine.

And like these things always go, I found an EMI issue with my power supply and a USB compliance bug in the off-the-shelf stepper control board. But it all turned out OK in the end so we now have the first mold tool that was designed and machined fully in-house. And I learned so much about tool paths and drill bits. Plus it feels like now that everyone has experienced hands-on how stuff is milled, my team got a lot better at designing things for cheap manufacturing.

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

#119
A simple “ChatGPT for email.” I just want to be able to ask things like “What time is my flight next week” or “Can you pull up the email where I sent John the final documentation for the api?”

I don’t want to auto compose messages or anything. I just want the computer to filter out things I don’t care about and tell me the answer to things without hunting around my inbox.

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