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Ask HN: What are you working on? (February 2025)

261 points david927 | 2 comments | 23 Feb 25 23:00 UTC | HN request time: 0s | source

What are you working on? Any new ideas that you're thinking about?
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mavamaarten ◴[24 Feb 25 07:09 UTC] No.43156614[source]▶
I live next to a school, so there's a low speed limit (30 km/h). Still, people drive like race drivers and the city hasn't ever responded to the residents' hopes of introducing a speed camera.

I wanted to have some data on how many people speed, the max speed recorded, that sort of thing. Things the city should be doing after many complaints of dangerous driving and people being almost killed on zebra crossings.

I have a doorbell camera, and by analysing the footage using OpenCV and some code, I can track how fast people drive if you see how fast they move between two known points.

Average speed: 46 km/h :(

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1. kmmndr ◴[24 Feb 25 13:04 UTC] No.43159077[source]▶
This is very interesting. I had the same need a few weeks ago, which resulted in a tiny Golang/OpenCV project (https://github.com/kmmndr/motion-speed). In my use case, we even had champions beating 60 km/h, three times allowed speed
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2. brikym ◴[24 Feb 25 14:43 UTC] No.43160135[source]▶
It's always interesting when you find out others are doing some obscure idea. Last year I was scraping supermarket data from a small country and I ended up setting up a discord with a half dozen of us sharing tips.