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I've talked to Dr. Rekelitis here in Gainesville. Pretty similar stuff to what I'm working on, but their component list is definitely in the five or six figures range. Particularly their forward scanning sonar reliance. Time will tell if it transforms into a more replicable and accessible...

For that particular light, the four leads were for a switch and an LED. I gave up the indicator LED that showed battery status, and left that all disconnected. The 4-step was all cycled via that one switch. As an update, that light I replaced the switch with died probably 3 years after I...

Many farmers are just blindly following their farmers bureaus which are oftentimes working against them in right-to-repair (see here). There's a particularly strong lobbying effort against R2R in that area, maybe this was a 'foot in the door' for expanding to other areas. Same concept as...

Barring the sale of ICE cars and improving the repairability of them are not mutually exclusive concepts. Not that I wholeheartedly agree with the latter, but I'm guessing that fixing a reasonably modern car is probably less environmentally impactful than scrapping it and building a new one. But...

Link to a good cheap anode? Most of the ones I'm seeing are massive.

This isn't for their trilam, but covers some components to get an idea for feel and stuff. Going on 2+ years, no leaks, no major wear, works about as well as the day I got it.

How long do y'all leave stages underwater for? Freshwater or saltwater? Assuming aluminum stages. How damaging is it to the tank itself vs the reg?

Update to the SLAM cave mapping project. Bought some new toys - a sensor tube, pressure/temp sensor, a whole new camera/IMU system, and a reaaally awesome IMU (in the progress of fabbing a breakout board for that). The days of syncing up video files, extracting IMU data, etc, are over! Gonna...

What's it cost? As far as I'm concerned, if it has a five-digit cost, it's worthless for widespread use. Modest cost means practicality for the common cave diver, and something that will actually amount to more than a one-off cave mapping before a white paper is written and the entire operation...

So it's about as practical as draining the cave to get measurements. Maybe in 10 years :banghead:.

Lol not with $. If laser scanners were cheap, I'd love to explore them. I've yet to find one under $2000, much less something I can adapt for underwater use (blue/green light). Please correct me if I'm wrong though. I have been able to find 360 LiDAR that can be built for around a hundred bucks...

That's what I figured, I just had to ask. I know some fancier DPVs can estimate relative speed-to-flow. I don't remember getting an answer, but what component is that and how much do they cost? What kind of polling speed do you get? I looked at cheaper sonar solutions like the Ping360 but they...

Very well done! Looks pretty incredible! One of the things I've found with SLAM is that the individual feature points aren't particularly accurate, at least not on a single pass from a single angle. And while visual SLAM gives pretty good low-latency data on position changes, it drifts modestly...

240hz 2.7k video of course! I downscale it, but the raw high-end video is always there to reprocess later if I change methods, algorithms, configurations, etc.

A little update on this whole thing: https://scubaboard.com/community/threads/slam-and-lidar-cave-mapping.631486/

Another pic of my DPV setup. Used 80/20 to attach two GoPro Hero 11s and 60-ish dollar video lights.

I've been holding off on this post for a couple of months now, but I've been working on mapping caves using visual-inertial SLAM. There's still a ton of work to do, but I'm getting there with the process and it's only getting better over time. I could practically write a thesis on it all, but to...

Good question.. I don't think so, then again I haven't really ran the DPV down below 68% (according to the BMS), and I try to store it at ~70%. Running stock firmware, with only the battery balancing setting tweaked. I'm going to start changing stuff out with time. I can tell you that I went to...

Any reasoning why it's underneath the crotch strap and not above it? I have no opinion, just wondering.

All good, just curious. Looks like an early innovator for sure. I'm looking for something to swap out my 2010 nomad XT for, probably going to go with something a bit more fresh though.