As you can see, this is long: https://suanto.com/2024/06/06/the-time-I-built-an-ROV-02/ https://suanto.com/2024/06/06/the-time-I-built-an-ROV-03/ https://suanto.com/2024/06/06/the-time-I-built-an-ROV-04/ https://suanto.com/2024/06/06/the-time-I-built-an-ROV-05/ https://suanto.com/2024/06/06/the-time-I-built-an-ROV-06/ https://suanto.com/2024/06/06/the-time-I-built-an-ROV-07/ https://suanto.com/2024/06/06/the-time-I-b…
TFA is nothing short of amazing and absolutely deserves attention. The author (and his brother) built (from scratch!) a side-scan sonar remote controlled boat and an ROV (a remote controlled submersible) with a camera and a light, and with this they found TWO missing persons' cars under water. Real products of these sorts would have cost enormous amounts of money, but they built their own for the cost of parts and la…
I built an ROV to solve missing person cases
131–140 of 167 posts
Re: I built an ROV to solve missing person cases
#132> So where was he going? I saw two possibilities: either to Tikkakoski to visit his ex-girlfrind he was on the phone with or; just to drive around with a new powerful car, to shake off the heated phone call. I don't understand how suicide isn't at the top of the list here. He was obviously very upset emotionally. He didn't care for his belongs other than his phone. He didn't care to steal someone's car or answer for…
Re: I built an ROV to solve missing person cases
#133This is amazing. A Finnish man gets curious about a missing persons case. He does some great detective work, and builds an ROV with side scanning sonar and video. The outcome, with some help from his brother, is just spectacular. I couldn't stop reading!
It's absolutely brilliant. Everyone has watched a TV show where a case is slowly being solved, but who actually considers that oh yeah, I could actually become the person who searches for a random missing person case, instead of watching it on Netflix? And the amount of McGyvering involved! How many people would have given up at one of the steps? Oh it requires coding in C++ for Arduino, sure, I'll just do that. Oh,…
Re: I built an ROV to solve missing person cases
#134The article doesn't say so, but some web search and deepl.com translation makes it sound like the second missing person may have died by suicide. When they first found the sunken car, they wondered (presuming that the car had gone off the road by accident) how the heck the car had ended up so far out into the water. The answer might be that it didn't fall off the road, but rather was driven off at high speed on purpo…
Re: I built an ROV to solve missing person cases
#135I love these long-form build logs. I just started reading, and I am making the faux-pas of commenting before finishing. But, I'm wondering what the challenges are of automating the ROV to map a body of water's floor in a pattern. like a grid pattern, or whatever is most efficient. At first I was thinking currents would cause displacement. but can't we sense the current moving us in undesirable ways and correct with t…
What you are describing would be called a UUV (unmanned underwater vehicle) or AUV (autonomous underwater vehicle).
Re: I built an ROV to solve missing person cases
#136The author clearly reads HN or used to. I’m curious if he plans on pursuing this further. Sounds like the last investigation wrapped in 2021 and he may have even gotten a cash injection to upgrade some of his kit. The last update kind of leaves you hanging!
Re: I built an ROV to solve missing person cases
#137> So where was he going? I saw two possibilities: either to Tikkakoski to visit his ex-girlfrind he was on the phone with or; just to drive around with a new powerful car, to shake off the heated phone call. I don't understand how suicide isn't at the top of the list here. He was obviously very upset emotionally. He didn't care for his belongs other than his phone. He didn't care to steal someone's car or answer for…
Why would he bring his phone though?
Re: I built an ROV to solve missing person cases
#138> So where was he going? I saw two possibilities: either to Tikkakoski to visit his ex-girlfrind he was on the phone with or; just to drive around with a new powerful car, to shake off the heated phone call. I don't understand how suicide isn't at the top of the list here. He was obviously very upset emotionally. He didn't care for his belongs other than his phone. He didn't care to steal someone's car or answer for…
Why would he bring his phone though?
Re: I built an ROV to solve missing person cases
#139This is amazing. A Finnish man gets curious about a missing persons case. He does some great detective work, and builds an ROV with side scanning sonar and video. The outcome, with some help from his brother, is just spectacular. I couldn't stop reading!
Re: I built an ROV to solve missing person cases
#140The article doesn't say so, but some web search and deepl.com translation makes it sound like the second missing person may have died by suicide. When they first found the sunken car, they wondered (presuming that the car had gone off the road by accident) how the heck the car had ended up so far out into the water. The answer might be that it didn't fall off the road, but rather was driven off at high speed on purpo…
I liked how they used logic to narrow things down to just what was verifiable and only ended up searching a few spots in the end. It makes me feel like the police should work with them to solve other missing persons cases.