[silent running]

Quote: (Originally Posted by dave t)

I think the Prism has a small LCD on the mouthpiece, I seem to remember seeing one at DEMA one year, the problem with this is focusing, its not very comfortable to keep having to focus very close and then return to distance vision, it makes me feel sick after a while!! With an led hud there is no need to focus on it, it is visible in your periphery vision all the time.

Dave

Hello Dave, yes you did see a small LCD screen on the Prism at Dema. But it was a prototype display for their integrated RGBM deco computer, not in production yet. And I too wonder about the potential eye strain of alternately focusing very near and far. But it seems that the era of too much information is probably here to stay... -Andy

[silent running]

Quote: (Originally Posted by heyydude)

Why does anyone dive? To see fish, to look for treasure, to get a porthole, to take some pretty pictures, or to attract Chicks.

For military dudes, it's to defuse a mine, to swim up to the shore to shoot some bad guys, or to do some quiet reconnaissance.

In all of these cases, NO ONE dives to stare at gauges, displays.

Kevin, you said it very well. If I want more info than that which is critical and need to solve a mystery/problem, I will look at my 2dry and start the analytical thinking. Up until that time, I want concentrate first and fore most on my environment, which is constantly, unpredictably changing and just as capable of killing me as Hi/Low PO2 or CO2. And all this is before we get to the fun part... -Andy

[Ben Field]

Quote: (Originally Posted by silent running)

And I too wonder about the potential eye strain of alternately focusing very near and far. But it seems that the era of too much information is probably here to stay...

A "proper" HUD would be projected to a focus point at the working distance of the diver 6-8ft perhaps, no need to move to close focus. This is how HUD's in aircraft and cars work.

To be honest- I've looking into this and it is doable, I even made a prototype from an old projecting clock (you know- the ones that shine the time dimly onto the bedroom ceiling so you don't have to roll over to see you've slept in )
I got it to project the time, focussed to be readable at about 6ft onto the mask, changing the LCD to show PPO2 isn't an issue, finding a power source to make the projector last is...

Electronics is abit out of my league but I think I have the optical side figured out, I think it can be done in a form factor no bigger that a small mask strap torch and by sticking a small prizm to the mask face plate, alignment is important so the package has to be fixed to the mask, hence keeping the weight down but power was the issue I've stopped at... toyed with doing an umbilical version or trying to use LED's for projection to get around that.

It kinda depends what people want, I think numerical PPO2 is enough, perhaps stepped brightness for distance from setpoint deviation and a warning light that you are in deco or solenoid activity, I wouldn't want to see any more than that.

This all ground to a halt because I moved house... her indoors insists I paint walls and build furniture instead... grumble grumble.

I only started looking at this because I shoot alot of video and need to keep track of the KISS while shooting, I've just got one of Bruce's Shearwater HUDs and have to say- its great.

From a commercial standpoint this kind of thing would only make money if you make a non-Rebreather version for the bubble blowers, so Oceanics mask is while irritatingly blunted for our purposes well positioned to sell... if its priced right.

BEN

[Dave Sutton]

Quote: (Originally Posted by silent running)

Hello Dave, yes you did see a small LCD screen on the Prism at Dema. But it was a prototype display for their integrated RGBM deco computer, not in production yet. And I too wonder about the potential eye strain of alternately focusing very near and far. But it seems that the era of too much information is probably here to stay... -Andy

I'm sure of two things:

(1): That the era of a different means of information display is just on the horizon.

and

(2): That it won't be coming out of an adapted video camera display.



Comment: The R&D funds needed to do these projects isn't available to "ma and pa" working on a short budget. Optical display systems will be highly engineered systems designed by firms with the ability to invest large amounts of capital into the projects. This essential means that Rebreather displays will be follow ons to the open circuit market, as only that market has sufficient mass to drive the investment. Oceanic has the lead right now, be interesting to see what they do. All they need to do *for now* is to have their mask display depth, time, and PSI all at the same time in Gauge mode and it would be a good start. The rest will follow.


For Bruce: The focal distance of a HUD in an aircraft is about 4 feet past the combiner. It appears to be projected at infinity but is not.


Dave

[DrJM]

Quote: (Originally Posted by decoweenie)

• 1 additional LED (white) blinks when solenoid fires (Boris)
• 1 additional LED (blue ?) for deco information (Boris)

It could be arranged into a single long HUD, or split into 2 HUDs on both side to make it easier to distinguish.

Boris aka Ouroboros:

one single long HUD but still more compact than my old 15.5

1 LED white A for Alarms => then you look at your Iry display to find out what it is related to

1 LED red T for speed of ascent and/or decompression stop

1 LED blue V for valve of the solenoid opening and closing

1 LED green O for the set point, steady on it, slow flashing under it, fast flashing above it


Worst case scenario if you loose the Iry display
(ex St Sauv Exped July 2005)
you can fly and deco the unit just on HUD

If you're busy scootering, pulling line, finding your way in a cave you can fly the unit just with the HUD

Good job Mr Gurr

Jerome

[divetheworld]

Quote: (Originally Posted by Dave Sutton)

Oceanic has the lead right now, be interesting to see what they do. All they need to do *for now* is to have their mask display depth, time, and PSI all at the same time in Gauge mode and it would be a good start. The rest will follow.
Dave

Speaking of the Oceanic mask, I think it will be the wrong way to go.
It wont fit everybody, and especially on Rebreather's mask fit is important.
Also, losing the Oceanic mask would be so depressing. Its not like you can just pick your spare up and continue the dive trip.

It would be better to have an add-on component that can be placed on any mask.

[Dave Sutton]

Quote: (Originally Posted by divetheworld)

Speaking of the Oceanic mask, I think it will be the wrong way to go. It wont fit everybody, and especially on Rebreather's mask fit is important. Also, losing the Oceanic mask would be so depressing. Its not like you can just pick your spare up and continue the dive trip. It would be better to have an add-on component that can be placed on any mask.

Cannot disagree in principle, but integration is going to be the way it's done by the OEMs. Ideally, a display sitting on the right side of the BOV (for example) would be superior, but until there is a market mass it's probably not going to be built...

(until I get my hands on a mask, rip it apart in the shop of horrors, and rebuild it to my own specs....insert view of me rubbing my hands together here and drooling.........)

It'll be the brave man who first takes a hacksaw to the Oceanic mask and makes his own "HUD on a BOV" out of it. Sounds like something I would do...


I'm going to go play with one of the masks tonight and will report. Be nice to be able to see what we are talking about.


Dave

[Skipbreather]

Quote: (Originally Posted by heyydude)

I had a student once, who passed out at the bottom of the pool, because he was so busy staring at his Secondary. Go figure.

Ain’t it the truth. I was there- under the guy, pushing him to the surface, and inflating his wings to keep him there. Hey Kevin- I always meant to ask: Was that wet, brown stain in yer britches there BEFORE ya' yanked him from the water? Ahhh, fond Miami memories......

(for the record: guy came to w/ some O2 and was OK)

Ken

[heyydude]

Hey Ken,

Yeah - and there I was, wearing Tom Mount's damn Freediving Fins (mine were lost by UPS), which are particularly useless in a pool...

I still have his Tablet - I made a copy of it so that Tom could use it in his lectures. I'll have to dig it up and photograph it for everyone to gaze at and wonder...





Kevin.

[Dave Sutton]

Quote: (Originally Posted by heyydude)

I still have his Tablet - I made a copy of it so that Tom could use it in his lectures. I'll have to dig it up and photograph it for everyone to gaze at and wonder....

Yes, the ever popular "write down your PP02 every few minutes to see what it does" drill.... as the scribbing rolls off the edge as the guy passes out.


Dave