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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: 0s | 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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jokteur ◴[28 Apr 23 13:25 UTC] No.35741028[source]▶
Given the type of trains that are passing (it seems no IC/IR), along with their precise timing and direction, I'm sure it is easy to figure out where exactly you are living.
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wkat4242 ◴[28 Apr 23 21:35 UTC] No.35747375[source]▶
Especially in Switzerland where the trains actually go on time :P But anyway does it really matter? It'll still be hard to identify the actual apartment.

Most online webcams are easier to identify

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wizzwizz4 ◴[29 Apr 23 00:26 UTC] No.35748784[source]▶
Given an approximate location, even I could do that. You just look at the camera angle.
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1. wkat4242 ◴[29 Apr 23 01:04 UTC] No.35748977[source]▶
But the camera image here is heavily processed. Getting an angle out of that looks difficult.