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

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

#602
post #270

I co-organized a weekly hacknight meetup of 40-70 people. I wrote a script to make Anki spaced repetition flash card decks with avatars and names pulled from the meetup API. I would use GitHub Actions to run the script a few hours before the event, then drop the importable deck into a Google Drive folder. I'd review the deck before the meetup, and then at the event, I'd not stress about names. I'd pretend to introduc…

>>When I know names, I am really great at using them a lot

I once broke up with a girlfriend, PatCon, because, PatCon, she would use my name PatCon multiple times in a sentence, PatCon and after a while it was annoying enough to where I had to break up with her, PatCon.

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

#603
post #593

I just moved to the bay area. I made an app that scrapes all bay area events from meetup, eventbrite, and a couple of other sites- This way you end up with around 100 events a day, way too much to read through. So next I take each event, send it to chatgpt3.5 and ask it to rate this event on around 20 parameters. Next, I take the latitude/longitude of each event and measure driving distance from my house. Then I have…

This is brilliant and could be useful in general. Very "Jeeves" like.

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

#604

Kirby's Adventure for the NES, one of my favorite games, ignores your controller inputs sometimes. I dove into the ROM, figured out the problem and fixed it: https://www.romhacking.net/hacks/7595/ I'm currently hacking the SNES mouse into Sim City.

That’s great! I really appreciate these rom hacks that fix errors in the original game to allow for an ideal version. How do you go about hacking a SNES rom? What tools and language do you use?

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

#605
I've built a few audio effects that only I've used. The only one that really stuck around is a guitar pedal delay effect with pitch shifting where the pitch shifting only happens on the first repeat, it doesn't accumulate as the sound repeats. It also has an envelope follower so notes can repeat infinitely when there's no playing, and once you start strumming/picking again the feedback of the repeats drops to zero until you stop playing and it goes back to the knob setting (Which can go from 0-150% feedback). Unfortunately I've got no good sound demos except some Facebook videos I'm not willing to share ;p

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

#606
post #593

I just moved to the bay area. I made an app that scrapes all bay area events from meetup, eventbrite, and a couple of other sites- This way you end up with around 100 events a day, way too much to read through. So next I take each event, send it to chatgpt3.5 and ask it to rate this event on around 20 parameters. Next, I take the latitude/longitude of each event and measure driving distance from my house. Then I have…

What's your prompt? I've been doing something similar but I've found it difficult to get chatgpt to output a consistent data format.

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

#607
I built a personal data warehouse just for myself, with everything from my Tweets and LinkedIn data to my Swarm checkins and a copy of my genome.

I gave a talk about that (with a lot of video and screenshots) here: https://simonwillison.net/2020/Nov/14/personal-data-warehous...

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

#608
I've been playing around with Node-RED[0] and built a completely pointless svg manipulation flow[1] which then makes this page https://demo.openmindmap.org/ui/#!/7

The idea is create a tool for creating a global mind map but instead it's a svg!

[0]=https://nodered.org

[1]=https://demo.openmindmap.org/omm/#flow/3ebb65fdbecb182e (not really mobile conform)

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

#609
A number of years ago I decided that I had enough of iTunes and that I needed to handle my digital music collection myself.

Blog post about it: https://swampbits.bearblog.dev/first-cloud-music-library/

    Original python implementation: https://github.com/pauldardeau/cloud-jukebox
    Go implementation: https://github.com/pauldardeau/go-cloud-jukebox
    C# implementation: https://github.com/pauldardeau/CSharpCloudJukebox
    Oxygene on Mac implementation: https://github.com/pauldardeau/MacOxygeneCloudJukebox
    Oxygene on Windows implementation: https://github.com/pauldardeau/WinOxygeneCloudJukebox
    C++ implementation: https://github.com/pauldardeau/cpp-cloud-jukebox
P.S. I'm looking to find my next job, so if you think I might be a good fit for an opening you know about I'd appreciate hearing about it!

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

#610
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.

A hybrid between area and line scan - block scan camera?
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