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

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541–550 of 1001 posts

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

#541
The old Yahoo News Digest app from years back was incredible and I never could find a replacement. I decided to build my own.

It uses Embeddings to gather thousands of articles and compare against each other. Then uses a relational graph to combine those into collections and uses an LLM to create a succinct summary, quote, map, and other info about the topic.

It lets me the news for the day within minutes instead of endlessly scrolling.

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

#544
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.

Wow that's very cool. The resulting super flat images of the trains is really interesting -- like taking a photo from immense distance

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

#545

I built carefulwords.com simply because I wanted to type a word into the address bar and get a large list of synonyms and some historical quotes using the word quickly. For example: https://carefulwords.com/solitude https://carefulwords.com/think etc. Also unlike thesaurus.com, the search bar actually focuses so you can just start typing! It's not perfect, I need to do a lot of editing, but nonetheless I use it almos…

Added as a Kagi bang! Love it.

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

#546
Built my own app for tracking my exercises using a phone arm band, the gyro, accelerometer, and the camera to create a model for rep counting and tempo. I got tired of the mental effort of counting reps. This graphs the strongest signal using an fft and some custom algo to determine the best signal to use. Works pretty well and backs up my own internal count. I promised myself I would only build it for me so I would actually build it as opposed to getting a mental block by building it for others.

My long term vision was to open it up to others and mine the data to determine what the ideal weight, tempo, resting period, and exercises were for a particular body type. I'm just a little too ADHD to commit to it and keep a day job.

https://swolereport.com/

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

#547

- A ChatGPT shell that integrates well into my editor of choice https://xenodium.com/chatgpt-shell-available-on-melpa - A scriptable screenshot/video capture utility https://xenodium.com/recordscreenshot-windows-the-lazy-way - An iOS habit tracker that's neither cloud-based, nor needs an account, social, wants my attention, data, etc. https://flathabits.com - An iOS scratch pad that removes further friction than typi…

I love chatGPT shell. 良い!

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

#548

My current favorite: I often go camping deep in the backwoods with friends, far from any sort of cell service. So I built a LoRa radio system that allows us to text each other, physically locate each other, etc. when we go off and do our own things. The system consists of small radio units that are carried, and a larger (but still backpackable) base unit that gets set up in camp. They run as a mesh network, so you do…

This is very cool, and something I could see myself setting up for my friends while camping as well. Are you able to share more details about your setup? Thanks!

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

#549
I build my personnal search engine which record things I like on twitter, blog posts etc.. It automatically calls those APIs using Github Action and store them in an open source database (json file)

I actualy use it at least twice a week to retrieve content I bookmarked, so I'm happy to have created such a tool.

The app: https://raphaelsty.github.io/knowledge/?query=bayesian

The Github: https://github.com/raphaelsty/knowledge

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

#550
Some background: - Samsung Galaxy phones have "Routines", background tasks that can fire based on a number of conditionals, including time, geofencing, messages received, etc. - I have a good friend who I regularly grab dinner with at Texas Roadhouse. In fact, for over a year, we went twice a week or more after we each bought $1200 worth of gift cards for $900 during a promo that was intended for businesses (we both have LLCs we were able to use). - Our Texas Roadhouse has crazy long wait times during peak hours. Like 45 to 90 minutes. This was especially frustrating given my friend was about 10-15 minutes from that location, with traffic. - Texas Roadhouse offers an online reservation system. You fill out the form, and they will send you a text with the estimated wait, to which you must respond to confirm your reservation. - Once you are texted again to be notified your table is ready, you have 20 minutes or you lose your reservation.

As VIP customers (the entire restaurant knew us both on a first name basis, we always tipped generously [e.g. $20 on $40 of food], we often received preferential service from staff. One of our waiters was actually a young man with a budding tech interest, who, after considerable encouragement, mentorship, and a quality boot camp some of my former coworkers enjoyed, is now a software engineer making several times more income than he made as a waiter.

We were very pleased with this arrangement in all but one way: while we could talk to several of our waiter friends who were staff members of the restaurant to get a table without a reservation even when it was 1 table short of being packed, it often was packed, or our waiter friends were not working that night, and we did not like waiting in a noisy, crowded lobby.

I picked apart the reservation website and found a very simple, wide-open API. I quickly hacked together a script to make a reservation with a single GET request to my own site, with reservation options in URL parameters, then created Samsung Routines such that when I arrived within 100 feet of my friend's house between 3pm and 9pm, it would automatically send a properly formatted GET request to my website, which in turn made a properly formatted POST to the API, and then it would also immediately respond to the incoming text confirming the reservation. Before I'd even made it to his front door, we'd have an ETA, so we could decide on whether to start a movie, play some split screen diablo, etc. I'd then get a text a short time later, and we'd leave for TRH. Upon arrival, we'd walk up to the counter, mention our reservation was called up, and proceed to be seated immediately regardless of how busy it was, or whether any of our waiter friends were working that night.

DIY VIP Reservation system :)

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