Ask HN: Most interesting tech you built for just yourself?
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.<p>It has a frontend at <a href="https://trains.jo-m.ch/" rel="nofollow">https://trains.jo-m.ch/</a>.<p>Edit: it's currently raining and the rain drops are disturbing the images a bit.