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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: 0.233s | 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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dllu ◴[28 Apr 23 18:48 UTC] No.35745463[source]▶
Have you considered getting a line scan camera for sharper and higher resolution images? I took some train scans with one: https://daniel.lawrence.lu/photos/

Incidentally I also built some tech for it: https://github.com/dllu/nectar but I need to update the readme...

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seabass-labrax ◴[28 Apr 23 19:56 UTC] No.35746302[source]▶
I remember seeing your photographs on Wikimedia Commons and wondering how you did them - now I know! I always assumed that you just used a very quick shutter with an f-stop of zero :)
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dllu ◴[28 Apr 23 23:29 UTC] No.35748450[source]▶
I have a huge backlog of photos that I need to contribute to Wikimedia Commons! I'll get around to doing it eventually, hopefully before 2045.
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1. seabass-labrax ◴[30 Apr 23 22:14 UTC] No.35767067[source]▶
Do it sooner than 2038 and you get the privilege of 32-bit timestamps on the metadata :)