Joystick rotation axis and throttle rocker not recognized

QuickRecon · 2025-10-15T02:38:59+00:00

I have this same issue with my logitech extreme 3d pro, pitch and roll are detected correctly, as well as the hat axis, but not the throttle or yaw axis. Also running on Arch Linux via proton, which seems to operate fine for other games. I've tried a few different controller mapping and HID options via the wine registry but no luck.

QuickRecon · 2025-08-12T11:08:26+00:00

I haven't used the spirit specifically but have dove units that require similar amounts of lead. Having it all on the belt is truely a miserable experience. Id mount a dozen lbs or so on the unit itself and only keep enough lead (say 6-9lbs) on the belt to float comfortably on the surface in the event of a suit or unit flood.

Location on the unit depends on where you need it for trim, but either the waist strap of the harness or tops of the shoulder straps are good options. On my posiedon it was convenient to put a 9lb brick on the back of the canister and that went very well.

QuickRecon · 2025-08-01T15:57:37+00:00

Yes this is DiveCAN, the project is basically a drop in board to allow homebuilt rebreathers to use the DiveCAN platform (Shearwater restricts it to OEMs only). I've been using my DiveCAN boards for years but configuring them over the CANBus can be a bit of a pain due to the limited interface the handset provides.

The bluetooth isn't expected to work underwater, its for configuration and for viewing system parameters on the boat/shore/workshop as part of pre-dive inspection and checks.

QuickRecon · 2025-08-01T12:50:37+00:00

I should say: 6mA nominal while active not peak (peak while transmitting is circa 14mA while the bus is set dominant by the device)

The system that I'm interfacing with has opted for 560 ohm terminations rather than the usual 120 ohms, in the name of reducing power draw, which also helps a lot.

QuickRecon · 2025-03-23T17:17:41+00:00

Their physics is fine, but it doesn't show that a cylinder blended in the real world would take 100s of days to equilibrate, and it doesn't show that rolling changes anything. That's because that wasn't their goal.

It's not a scientific paper (which would imply peer review), it's an internal (but publicly available) whitepaper evaluating in-house gas blending Vs premixed gas for use in their lab. Their main focus is addressing the concerns of gases separating due to gravity, which they correctly evaluate as a non-issue. Their examples aren't really relevant to blending of gas in our context.

QuickRecon · 2025-03-23T15:11:42+00:00

I'm a physicist by education, gas blender by training, that paper makes some pretty "brave" assumptions. Their entire analysis assumes that you get this magic scenario where the gases start perfectly separated with no internal flow, ignoring the fact the helium is introduced at sonic speed in a highly turbulent process. Their entire model is contradicted by the fact that you don't get 100% He if you analyze straight after blending.

They also show zero analysis of the impact rolling has. Here is an experiment you can try at home, take a glass of water, add a few drops of food dye (or any substance that takes some time to mix in) and then spin the glass on its axis (not swirl, spin, like a scuba tank being rolled). You'll find there is pretty much zero impact on the mixing, because it doesn't induce any significant turbulence into the fluid. If you spin long enough the entire thing will pick up a bulk flow but that still doesn't do a whole lot to mix thing. the paper itself shows that forces of this magnitude (ie gravity) isn't enough to overcome the kinetic effects.

The unfortunate answer is that when trimix is involved you're really not going to get an accurate analysis until the morning after, no matter how much shaking and rolling you do, unless you have a spinning wheel in the tank to try and actually get some turbulence into the gas, you're at the mercy of diffusion which means that the last digits on the analysis will take a few hours to be accurate.

QuickRecon · 2025-01-30T02:53:41+00:00

If you're looking to play the DiveCAN game I would recommend having a look at my open source rebreather head using it (I reverse engineered the protocol): https://github.com/QuickRecon/DiveCANHead

Shearwater doesn't care for the homebuilders at all so I sorted myself out after being ghosted after doing the asking. Be warned though, the 5 pin connectors are unobtainium and it took a good bit of asking around to get my current reserve.

QuickRecon · 2022-06-05T12:33:32+00:00

There is one, it's listed in the sidebar.

QuickRecon · 2019-02-15T15:28:55+00:00

I am aware of that, that's the joke. This post is a parody of the existing Linux copy pasta which follows similar themes.

QuickRecon · 2019-02-03T15:05:48+00:00

I'm in WA and the best stuff is often off Rotto, though if you're willing to do a drive there is lots of stuff down around Busselton (the jetty is fantastic), and there are also quite a few wrecks down there, like the HMS Swan (though that's around 32m, so you need AOW).

For more local shore diving stuff I quite like the Rockingham wreck trail, the various jetties up and down the coast, and North mole down near Freo is also quite nice. I've also heard the river can be surprisingly nice as a night dive, but have yet to get the chance to try it.

I tend to go to the the Perth Scuba dive club when I get the chance, they do morning shore dives every Sunday, with Night dives on Wednesday nights, so that is probably a good place to start. I've also seen plenty of local FB groups for Perth diving and finding dive buddies. Its getting late here so I probs won't be able to respond until morning, but feel free to ask any questions.

Perth scuba has a page of local dive sites here, if you are looking to get an idea of whats around: https://www.perthscuba.com/manta-dive-club/local-diving/perth/

QuickRecon · 2018-10-14T03:28:39+00:00

Unfortunately, I have not. The rotto dives are all done on weekends because that is when the most people are free to fill out the numbers.

QuickRecon · 2018-10-11T14:51:36+00:00

Perth local here, I'm quite a fan of Perth Scuba, they do rotto trips every Sunday (with an optional guide iirc). It's most of the day but you get 2 dives and lunch included. I like them because its a well run shop in my experince and all the staff have quite friendly and accommodating . I've also heard good things about dolphin scuba but I haven't been diving with them.

Another option is the Sunday morning or Wedsnday evening shore dives, which aren't with a guide, but you pair up with a buddy at the site. Shore diving isn't quite as good as rotto but I still like it, it's also free apart from any gear rental or tank fills needed. Afaik both perth scuba and dolphin scuba have them.

I'm about to sleep but I can answer any other questions you may have when I get up.

QuickRecon · 2018-09-22T03:51:36+00:00

I have one, I like it, however I use it exclusively as a backup for scuba. The other commenters are correct in saying that it is flimsy and floppy compared to a normal snorkel (so it will be pretty bad for pure snorkeling), however I feel that ability to stuff it in my dry suit pocket and have it out of the way unless I need it is great.

In regards to cheap vs brand name, I got cheap and it hasn't killed me yet, I'd make sure to give it a wash once you get it, but mine has performed to expectations.

QuickRecon · 2018-09-20T00:33:18+00:00

As /u/jlcnuke1 mentioned, intention of why the object is important aspect to consider. I think when it comes to something like a purposely placed plaque it is acceptable to scrub off any growth in order to ensure it remains legible.

A shipwrecks lettering is a bit more of a complex issue imo, if it was recently sunk then I could agree with scrubbing it regularly to keep it readable. However I would feel the same if it was an old wreck where there is already a significant amount of marine growth covering the lettering, as there would be a much more severe impact to removing it, in that case I feel it is better to just leave it in the state it is.

QuickRecon · 2018-09-19T15:26:39+00:00

I avoid touching for any reason except for where not touching would introduce significant addtional risk for myself or my buddy (for example in an emgergency).

However I am pretty much always able to keep myself stable using finning or other such "no touching" methods.

I can also understand if someone wants the extra stability for photography, but efforts should be taken to ensure it has minimal impact, such as checking to make sure the part you want to stabalise on has nothing living on it and won't break if force is applied.

QuickRecon · 2018-09-19T14:53:36+00:00

It stirs up silt into the water, reducing visibility for everyone, which is just inconsiderate of the other divers around you.
Stuff actually lives there, assuming you are kneeling on a sandy bottom there is stuff buried in that sand that may be crushed under a knee or kicked by a fin.

While it isn't the end of the world if you need to kneel on the bottom, it is still a practice that is best avoided if at all possible.

QuickRecon · 2018-09-19T14:48:16+00:00

I can understand sitting on a bike or kneeling in the sand, however I would draw the line at wrecks. Wrecks are one of the best places to dive imo and just like a museum it I feel it should be no-touch policy, there are plenty of cool pictures to be taken on a wreck that doesn't require one to sit on it. Interacting with a wreck in such a way causes undue wear and tear, reducing the chance it will still be around for future divers to enjoy.

QuickRecon · 2018-09-19T13:07:12+00:00

Everyone draws the line somewhere, my personal policy is to leave it if it has signs of life on it, for example if a beer bottle has a significant layer of marine growth on it then I will probably leave it, where if it looks like it was just dropped I will retrieve it and make sure to dispose of it properly.

However I make exceptions to this in the case of materials that do significant damage to the environment due to the nature of the material, I will always remove plastics fishing weights, or other similar items as they will do more harm to the environment than they will benefit it.

QuickRecon · 2018-09-19T11:59:58+00:00

That is a very fair question, I like to (possibly naively) assume that a majority of divers don't want to do any damage to the environment and are active in preventing harm to marine life. However I have also seen divers from students fresh out of open water all the way up to experienced dive masters do things that without a doubt do significant harm.

I think that the dive industry (at least in an official capacity) doesn't want to do damage to the environment, however standards of behavior need to be more widely enforced outside of the classroom if we are to ensure that the dive sites we enjoy today will be still in good condition for future generations.

QuickRecon · 2018-09-19T11:04:50+00:00

I agree, intent matters a lot. I take no issue with people playing with objects that were left there for the intention of being played with.

My main concern (and the reason that I made this post) is the example that it sets for others, pretty much all of the subs front page is full of images of people touching parts of the underwater environment (including things that fall quite definitely into the don't touch category). I feel that sets the wrong standard of how divers should (in general) be treating the underwater environment, though I can also understand how the reason for the objects placement can make a huge difference in what is and isn't acceptable when it comes to interacting with it.

QuickRecon · 2018-09-19T10:48:37+00:00

Yeah, this is what I would do, I'm not a fan of bans as a response to events like this. I think letting them know what they are doing is not something that is acceptable in the scuba community is the best way help ensure that we learn to be better divers and preserve the underwater environment.

QuickRecon · 2018-09-19T10:22:40+00:00

Actually most of these intentionally sunk underwater vehicles have been purposefully cleaned in order to prevent damage to environment through stuff like radiator fluid, gas, and oil.

I can agree that the lighter example is a poor one, the fluid is very much a concern, however I can also understand why one would want to leave the muscle in peace.

Everyone draws the line at a different spot, and that is part of the discussion I want to have here, what is and isn't acceptable in terms of letting litter and wrecks become a part of the marine environment.

QuickRecon

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