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

1901 points l2silver | 1 comments | 27 Apr 23 15:04 UTC | HN request time: 0.209s | source

Maybe you've created your own AR program for wearables that shows the definition of a word when you highlight it IRL, or you've built a personal calendar app for your family to display on a monitor in the kitchen. Whatever it is, I'd love to hear it.
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jo-m ◴[28 Apr 23 08:49 UTC] No.35738987[source]▶
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.

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Aeolun ◴[28 Apr 23 11:20 UTC] No.35739890[source]▶
What’s up with the duplicated cars at the top?
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LoveMortuus ◴[28 Apr 23 12:25 UTC] No.35740454[source]▶
From what I can see, they're not actually duplicated, I would suggest taking a closer look at the windows. But I do agree that it's quite hard to see the difference.

The trains look very clean from the outside. I do wonder how loud is it, to live so near the tracks.

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1. iridium184 ◴[30 Apr 23 07:35 UTC] No.35760400[source]▶
They are also very clean from the inside :).

I also live right next to a train line in CH (that has exactly the same kind of rolling stock passing by as the ones captured by jo-m). These are modern commuter trains (no cargo and long distance trains), and are a lot less loud than you'd expect. A somewhat busy street nearby would be an order of magnitude more annoying.