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

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

#721

Post by bennyg »

I built https://www.stoodious.app for my wife while she was studying for her California Real Estate Broker's Exam. She was frustrated with the price gouging on text books, or being the "state-of-the-art" study platforms being video only, having no/poor mobile UX or just feeling outright dated.

So I built Stoodious as a study guide platform that intends to give you the material and get out of your way, as opposed to the engagement-driving gamification of others. One of the killer features is being able to drill practice questions related to the specific study section you're working on - e.g. 20-30 questions about water rights, encumbrances or calculating GRM. Frequently my wife found herself studying vocab for a section but having to skim through a 100-question practice test to find related questions.

I extended the material to all 50 states' basic real estate licensing exam and am looking to add even more "professional exam" material.

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

#722

Post by gus_massa »

mcksp wrote: post #612
alextousss wrote: post #24

My roommate and I are still working on Tornyol, our mosquito killing drone! It uses ultrasonic sonar to detect mosquitoes, and missile control theory to ram into mosquitoes and grind them in its propellers. Our target platform is a 40 grams tinywhoop so it’s safe to fly everywhere and makes almost no noise :). A Roomba for mosquitoes! The main plus compared to traditional systems is that a drone can cover an enormous…

I guess you already researched this topic: would laser turret work for killing mosquitos? And if no, why not? Seems more reliable.

Someone had this idea, but from a static laser tower https://news.ycombinator.com/item?id=26376376 (343 points | 4March 2021 | 250 comments) and https://news.ycombinator.com/item?id=28793660 (317 points | October 2021 | 161 comments). I'd be very afraid of a missed shots or reflections impacting an eye, also the fire hazard.

Ans there is also a recent post where someone use a similar device to light the mosquito https://news.ycombinator.com/item?id=44005200 (20 points | May 2025 | 5 comments) and you must give the final bow that sound safer. (Protip: Buy an Electric Fly Swatter)

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

#724

Post by alextousss »

teruza wrote: post #681
alextousss wrote: post #24

My roommate and I are still working on Tornyol, our mosquito killing drone! It uses ultrasonic sonar to detect mosquitoes, and missile control theory to ram into mosquitoes and grind them in its propellers. Our target platform is a 40 grams tinywhoop so it’s safe to fly everywhere and makes almost no noise :). A Roomba for mosquitoes! The main plus compared to traditional systems is that a drone can cover an enormous…

Very cool idea. What is your estimated price? This could work well in many African countries if the price is low.

Long term, around $300/unit

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

#725

Post by tombert »

yu3zhou4 wrote: post #713
tombert wrote: post #632

Earlier quoted context omitted.

I couldn’t find anything that ticks all those outside of OU. University of Texas has one that looked pretty ok, but it was kind of expensive for a non-Texas resident. University of Western Florida has one for “Mathematical Sciences”, which more or less fits, and it’s not even that expensive, but I think that one is synchronous.

Yeah, I wish there were more options than that. Also, remote phd or master+phd would be even better, but these are even more uncommon and pricey (unless you know about a one that is good and cheap and remote then I’d love to learn more)

I was doing the University of York online PhD in computer science (formal methods), and it was actually pretty great, but it was costing me like $17,000 per year, and it was a huge time sink when I was already working full time.

That said, if you feel like you're organized enough to pull it off, I do recommend looking into University of York. It's a very good school.

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

#727

Post by konfusinomicon »

mcksp wrote: post #612
alextousss wrote: post #24

My roommate and I are still working on Tornyol, our mosquito killing drone! It uses ultrasonic sonar to detect mosquitoes, and missile control theory to ram into mosquitoes and grind them in its propellers. Our target platform is a 40 grams tinywhoop so it’s safe to fly everywhere and makes almost no noise :). A Roomba for mosquitoes! The main plus compared to traditional systems is that a drone can cover an enormous…

I guess you already researched this topic: would laser turret work for killing mosquitos? And if no, why not? Seems more reliable.

there is a crowdfunding effort for one going on right now for such a device. I think the price is around $500. the videos are equally awesome and hilarious as they vaporize into a little puff of smoke

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

#728

Post by motohagiography »

rorylaitila wrote: post #203

I'm digitally cataloging all US vintage print advertisements I can get my hands on ( https://adretro.com ). The backend is built on MySQL and Lucee and the full page ads published with Notion and Super.so. I'm using OpenAI vision to extract entity data from the images. So far I've cataloged about 1500 advertisements out of the ~100,000 in my possession. Of which that is probably only 0.1% of all the major material ou…

superb and immensely valuable, this is a history of desire.

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

#729

Post by justref »

is_true wrote: post #690
justref wrote: post #647

I'm working on JustRef[1]: AI Referee for Sports. I shipped the product a few days ago and seeing more than 2K users have already signed up and using the web app. Seeing people enjoy the application you created gives me a lot of enjoyment. Currently, I'm giving away 1 credit for every sign-up. No need to pay to try out. [1]: https://justref.app

awesome. did you write something about how the service works?

Thinking of writing a blog in the upcoming days. I'll share it through the website.

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

#730

Post by wonger_ »

vldszn wrote: post #514
wonger_ wrote: post #422

Earlier quoted context omitted.

Seems to work well. The live preview workflow is nice. I like data URLs but not sure how other people feel handling several-hundred character URLs. Only minor gripe is that the "support my work" popup is a bit aggressive.

Thanks for the feedback! The long URL is a compromise that lets the service work without requiring sign-ups or storing user data. I’ll definitely try to make the “support my work” popup less aggressive.

I think you could cut the URL length in half if you remap the JSON keys before compressing. Like turning

  "total": 18,
  "vatTableSummaryIsVisible": true,
  "paymentMethod": "wire transfer",
  "paymentMethodFieldIsVisible": true,
  "paymentDue": "2025-08-27",
  "stripePayOnlineUrl": "https://example.com",
  "notes": "Reverse charge",
  "notesFieldIsVisible": true,
  "personAuthorizedToReceiveFieldIsVisible": false,
  ...
to this

  "1": 18,
  "2": 1,
  "3": "wire transfer",
  "4": 0,
  "5": "2025-08-27",
  "6": "https://example.com",
  "7": "Reverse charge",
  "8": 1,
  "9": 0,
  ...
Cut from ~1400 to ~700 chars in my testing, which is still a lot, so idk if you think it would be worth the extra code.
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