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Ask HN: Most interesting tech you built for just yourself?

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671–680 of 1001 posts

Re: Ask HN: Most interesting tech you built for just yourself?

#671

Throwaway time! I built a custom smart motorized masturbator. It borrows from 3D printer design, and has a NEMA 17 stepper motor driving a 2GT belt loop around a short length of 2020 extrusion to slide a carriage along a linear rail. The carriage has attachment points that I've put clamps on, that close around a fleshlight-style sheath. There's a brace at the business end that you put around the base of the penis and…

Does it have Apple Health integration?

Re: Ask HN: Most interesting tech you built for just yourself?

#672
When I lived in SF, I built a webcam with a raspberry pi which looked down on the street in front of my apartment and uploaded to a website if a parking spot was available. My friends could visit the page on the drive up to see me, and check if there was a parking spot available before they got to the house ... so they didn't have to circle around looking for other spots if there was a vacancy right in front.

Re: Ask HN: Most interesting tech you built for just yourself?

#673
post #254

I have a rail line right under my apartment, so I built a small computer vision app running on a Rasperry Pi which records each train passing, and tries to stitch an image of it. It has a frontend at https://trains.jo-m.ch/ . Edit: it's currently raining and the rain drops are disturbing the images a bit.

When you say "right under my apartment", where exactly do you mean? Because I also have a train line going underground very near my apartment but it's not directly under. Could I capture such images? And I'm on the 4th floor.

Re: Ask HN: Most interesting tech you built for just yourself?

#674
post #663

For 6 years I had a long distance relationship between Peru and Germany. When you are in different timezones it can actually be nice to fall asleep with the other person "close" to you; so we kept Skype running while one of us went to bed and the other person was working on the PC. Unfortunately the internet connection would regularly drop, ending the Skype call. Now you did not want to wake the other person by calli…

That's really sweet. I think I remember a scene from the TV show Normal People where something similar happens.

Re: Ask HN: Most interesting tech you built for just yourself?

#675

I have a "TV channel" app running on a Raspberry Pi serving up local video content to a schedule I create. The Pi has a 5TB hard drive attached with perhaps 1000 videos or so. The app has a schedule and plays the videos according to the schedule. It starts up in the morning, plays tele-courses, moves on to old TV shows, an afternoon movie, after school shows begin around 3:00 PM, a comedy show around dinner time, an…

This reminds me of the channels gamers get in Ready Player One. The main character used his channel to broadcast his favorite T.V. shows that other people could tune in and watch. This is a really cool!

Re: Ask HN: Most interesting tech you built for just yourself?

#676
A jazz generator, pre-machine learning. It had instruments and each instrument had Markov Chains to control pitch and note duration. I then used a bunch of helpers and functions to write markov chains that sounded cool. I used it to play bass and jam with me. This was 2009.

The implementation was in netlogo I don’t remember why. It was really fun

Re: Ask HN: Most interesting tech you built for just yourself?

#677

A software developer and football (soccer) fan who lives in an antipodean time zone, I enjoy watching games on demand the morning after they occur. Apart from watching the games of the team I support, I like to watch one or two of the most entertaining games in any given week, but score spoilers absolutely ruin the experience for me. So, I created https://laterball.com : a web app the algorithmically determines the b…

That’s amazing, I’ve been wanting something like that for UFC for a while, I might just steal the idea!

Re: Ask HN: Most interesting tech you built for just yourself?

#678
post #597

One super niche project I made recently lets you search through dialogue in public domain films: https://public-domain-film-quote-search.stefanbohacek.dev I made it so that I can quickly find vocal samples to use in music production.

You may already have a list of public domain movies, but I wrote a query to find the ones on Wikimedia Commons [1] :) WikiFlix [2] is a nicer interface for browsing them

[1] - https://w.wiki/6dxC

[2] - https://commons.wikimedia.org/wiki/User:Spinster/WikiFlix

Re: Ask HN: Most interesting tech you built for just yourself?

#679
I have a hacky combination of Playwright browser automation plus Tesseract OCR that splits a Verizon group plan among members by posting individual totals to Splitwise. Simple at first glance, but there are always small changes due to people traveling overseas or changing devices.

Re: Ask HN: Most interesting tech you built for just yourself?

#680
- I built DreamList.com originally because I was working on another startup and as a founder I didn’t want my Baby Registry showing up on search engines or my address showing up to random people who looked up my name. All the other services were using customer names as free SEO and every list was indexed by default with your address available. I built it safe and private for my own family and over time it went from side hustle to main hustle, especially as demand for privacy-respecting social and family software keeps going up.

- A family member in an elected position needed to write a schedule for 22 healthcare professionals that take shifts every month and I wrote a tool for them that allows them to make sure everyone gets sufficient time off and nobody takes too much of the weekend load. They were elected again and to a higher leadership role partly because of the scheduling tool.

- Regularly writing new stock trading, modeling, and timing software to improve my earnings from trading.

- Wrote my own tool to scrape bios, cluster and find investors in different niche areas and need to rewrite it for recruiting people with niche expertise.

- Created a social network for collaboration between nerds like me in different disciplines at top universities while I was at grad school and shut it down after it got flooded with recruiter spammers. Always thinking of ways to relaunch that.

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