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A comment on Ask HN: Most interesting tech you built for just yourself?. Parent comment

Re:Ask HN: Most interesting tech you built for just yourself? by bombcar on Friday April 28, 2023 @01:52PM (#35744731)
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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Re:Ask HN: Most interesting tech you built for just yourself? by hyeomans on Friday April 28, 2023 @02:26PM (#35745202)
Same here, I have a Pi 3 but I want to have this outside in the balcony, the question that always stops me is how to power it and what camera do I meed?
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Re:Ask HN: Most interesting tech you built for just yourself? by bombcar on Friday April 28, 2023 @03:31PM (#35746033)
My plan was to stick the Pi inside, and power both it and the camera with Power over Ethernet (external-rated PoE cameras are a dime-a-dozen on Alibaba and friends).

I even got so far as to get it working with Zoneminder to dump out the clips that had motion, but didn't get further.

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Re:Ask HN: Most interesting tech you built for just yourself? by password4321 on Friday April 28, 2023 @03:47PM (#35746206)
https://news.ycombinator.com/item?id=11714207
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Re:Ask HN: Most interesting tech you built for just yourself? by robodan on Friday April 28, 2023 @06:01PM (#35747621)
I wanted that with noise levels. I'm so very tired of hearing illegally modified exhausts. It seems like an I2S mic would give calibrated levels.
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Re:Ask HN: Most interesting tech you built for just yourself? by Tempest1981 on Saturday April 29, 2023 @11:38AM (#35753942)
Could you show average speed vs car manufacturer? Or vs car type (compact, European luxury, minivan, truck). I always wondered if this is correlated.
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Re:Ask HN: Most interesting tech you built for just yourself? by bombcar on Saturday April 29, 2023 @04:24PM (#35756800)
Would be interest; perhaps the red ones ARE faster.
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Re:Ask HN: Most interesting tech you built for just yourself? by oever on Saturday April 29, 2023 @05:44PM (#35757535)
The short ones are fastest.
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Re:Ask HN: Most interesting tech you built for just yourself? by dharisd on Sunday April 30, 2023 @03:59AM (#35760517)
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/

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