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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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bombcar ◴[28 Apr 23 17:52 UTC] No.35744731[source]▶
This is close to what I've always wanted to build; a camera watching the road next to me that records the speed of the vehicle traveling by. I should have everything needed from a simple camera setup, but I've not bothered actually doing it.

Since you have speed, I should dig into this.

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1. dharisd ◴[30 Apr 23 07:59 UTC] No.35760517[source]▶
I actually have done something similar to this, since I had pretty clear view of the road infront and had my old android phone laying around,

Used to yolov5 to detect vehicles and deepsort to track them, also got a rough estimate for the speed of the pass

heres the two part blog i wrote about it

https://dharisd.github.io/posts/vehicle-monitor/

https://dharisd.github.io/posts/vehicle-monitor-part-two/