simple HUD

Nick uk. · 2nd January 2006, 17:17

Yeah, it's a very fine line between having just enough information and having too much information.

Joseph Grech · 2nd January 2006, 17:23

Nick, I completely agree with you. IMHO Huds should be least complicated as possible. The most important thing should be that when the ppo2 is no longer in the setpoint region 1.1 - 1.35 in my case the lights that flicker should be easily defined. Following is the code I use for my own HUD.

>.71 quick flashing blue + buzzer ( verylow setpoint )
.71 - 1.0 slow flash blue ( low setpoint )
1.0 - 1.2 slow green flash 4 seconds with blue flicker when off
1.2 - 1.35 slow green flash 4 seconds ( setpoint )
1.35 - 1.45 slow green flash 4 seconds with red flicker when off ( high set )
1.45 - 1.6 quick flashing red ( very high set )
> 1.6 quick flashing red + buzzer ( dangerous high setpoint )

This hud I made myself beceause the ones around found them too highly priced. I utilised picaxe microcontrollers which are very easy to work with. In my opinion the most difficult part was making the watertight container, otherwise the electronics are easy to master. In fact I was and still am a complete idiot in electronics. Whoever is capable of making his own simple displays is capable of building a hud.

Nice safe diving
Joseph

Sutty · 2nd January 2006, 17:25

Quote: (Originally Posted by Nick uk.)

Yeah, it's a very fine line between having just enough information and having too much information.

Absolutely!
I basically have 3 signals: too low (flash), OK (solid), too high (flicker).
Onto this is overlaid a change in colour to indicate urgency, and a change in flash speed to indicate extreme urgency - thats it!
Oh - and three independant channels

Nick uk. · 2nd January 2006, 17:58

Quote: (Originally Posted by Sutty)

Absolutely!
I basically have 3 signals: too low (flash), OK (solid), too high (flicker).
Onto this is overlaid a change in colour to indicate urgency, and a change in flash speed to indicate extreme urgency - thats it!
Oh - and three independant channels

That sounds just like what i'd need. What do you have and where did you get it?

Sutty · 2nd January 2006, 18:04

Quote: (Originally Posted by Nick uk.)

That sounds just like what i'd need. What do you have and where did you get it?

Its Uri's Rebreather Guardian!
Review here

Neil

Nick uk. · 2nd January 2006, 18:48

Quote: (Originally Posted by Sutty)

Its Uri's Rebreather Guardian!
Review here

Neil

Thanks, i'll check it out!

wizbang · 2nd January 2006, 22:24

Wow, all points of the compass.
I have Richards HUD system.
http://insane.bug-e.net/Puffer/PPO2/index.html
(you can see the original code sequence here)

I asked for it to match my regular set point of 1.3
CCR setpoints:
0.0 < PPO2 < 0.4 : buzzer + solid red light
0.4 < PPO2 < 0.6 : buzzer + fast flashing red light
0.6 < PPO2 < 0.8 : fast flashing red light
0.8 < PPO2 < 1.0 : slow flashing red light
1.0 < PPO2 < 1.2 : slow flashing green light
1.2 < PPO2 < 1.4 : solid green light
1.4 < PPO2 < 1.6 : fast flashing green light
1.6 < PPO2 < 2.+ : buzzer + alternating red/green flashing light

Anything other than solid means I look at the handsets.
Red or fast means do it sooner rather than later and the vibrater means do it now or go to sleep. (A bit melodramatic but hey it is my life)

Without trying it I don't think I would like to be given my PPO2 via the HUD.
I use it as an indicator. I carry one of my handset the whole dive anyway so it is very simple to just have a look to confirm what the PPO2 is before I take action.

The vibrator is the best bit, sometimes I will have added some extra O2 and then inadvertently drop down a bit and the PPO2 will spike. I can see in the HUD that it is rising and I think "I will breath it down in a tick or two (and I take some fuller breaths) but occasionally the vibrator will go off and it brings me into instant action. A heavy thumb, DOH.

Nick uk. · 2nd January 2006, 23:18

Quote: (Originally Posted by wizbang)

Wow, all points of the compass.
I have Richards HUD system.
http://insane.bug-e.net/Puffer/PPO2/index.html
(you can see the original code sequence here)

I asked for it to match my regular set point of 1.3
CCR setpoints:
0.0 < PPO2 < 0.4 : buzzer + solid red light
0.4 < PPO2 < 0.6 : buzzer + fast flashing red light
0.6 < PPO2 < 0.8 : fast flashing red light
0.8 < PPO2 < 1.0 : slow flashing red light
1.0 < PPO2 < 1.2 : slow flashing green light
1.2 < PPO2 < 1.4 : solid green light
1.4 < PPO2 < 1.6 : fast flashing green light
1.6 < PPO2 < 2.+ : buzzer + alternating red/green flashing light

Anything other than solid means I look at the handsets.
Red or fast means do it sooner rather than later and the vibrater means do it now or go to sleep. (A bit melodramatic but hey it is my life)

Without trying it I don't think I would like to be given my PPO2 via the HUD.
I use it as an indicator. I carry one of my handset the whole dive anyway so it is very simple to just have a look to confirm what the PPO2 is before I take action.

The vibrator is the best bit, sometimes I will have added some extra O2 and then inadvertently drop down a bit and the PPO2 will spike. I can see in the HUD that it is rising and I think "I will breath it down in a tick or two (and I take some fuller breaths) but occasionally the vibrator will go off and it brings me into instant action. A heavy thumb, DOH.

I like this sequence best of all i think.
And i like your thinking!!

**RichClark** · 2nd January 2006, 23:55

Quote: (Originally Posted by paulraymaekers)

the 'easy-reading solid green or green plus..' when everything is ok, the Smithers 'alike when things not OK, and you don't have to calculate: you simply look at your gauges when things start flickering!!

ok: here is the english version:

http://www.fr.smartgroups.com/vault/...ype&startrow=1

(thanks richard for the correct spelling :-)

have fun with the reading

regards
paul

No problem Paul, somehow I managed to miss this thread!

decoweenie · 3rd January 2006, 17:01

Anyway, for FYI, I found out that the "Smithers Code" was incorporated into the US patent filed by Juergensen Marines. So was the vibrating HUD. Etc...

So if I was to build HUD system myself, I wouldn't use the code unless I get permission from Juergensen Marines.

YMMV if you are a manufacturer and try to sell products in/to the US with any of those features covered in the patent...

2nd January 2006, 17:17	#51 (permalink)
Nick uk. Made in England. Current Rebreather/s: Inspiration Classic Azimuth Other Rebreather/s: Azimuth Join Date: Nov 2005 Location: Viale C.Colombo 75 Marina di Carrara. MS 54036 Italy Posts: 579	Re: simple HUD Yeah, it's a very fine line between having just enough information and having too much information. __________________ If it aint broke....don't fix it, and if it is.............well......get another one! divechief2000@hotmail.com
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2nd January 2006, 17:23	#52 (permalink)
Joseph Grech Joseph Grech Current Rebreather/s: Azimuth Other Rebreather/s: Azimuth Join Date: Mar 2005 Location: Malta Posts: 104	Re: simple HUD Nick, I completely agree with you. IMHO Huds should be least complicated as possible. The most important thing should be that when the ppo2 is no longer in the setpoint region 1.1 - 1.35 in my case the lights that flicker should be easily defined. Following is the code I use for my own HUD. >.71 quick flashing blue + buzzer ( verylow setpoint ) .71 - 1.0 slow flash blue ( low setpoint ) 1.0 - 1.2 slow green flash 4 seconds with blue flicker when off 1.2 - 1.35 slow green flash 4 seconds ( setpoint ) 1.35 - 1.45 slow green flash 4 seconds with red flicker when off ( high set ) 1.45 - 1.6 quick flashing red ( very high set ) > 1.6 quick flashing red + buzzer ( dangerous high setpoint ) This hud I made myself beceause the ones around found them too highly priced. I utilised picaxe microcontrollers which are very easy to work with. In my opinion the most difficult part was making the watertight container, otherwise the electronics are easy to master. In fact I was and still am a complete idiot in electronics. Whoever is capable of making his own simple displays is capable of building a hud. Nice safe diving Joseph
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2nd January 2006, 17:25	#53 (permalink)
Sutty Classic Kiss diver Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Jun 2005 Location: Glossop, Derbyshire, UK Posts: 781	Re: simple HUD Quote: (Originally Posted by Nick uk.) Yeah, it's a very fine line between having just enough information and having too much information. Absolutely! I basically have 3 signals: too low (flash), OK (solid), too high (flicker). Onto this is overlaid a change in colour to indicate urgency, and a change in flash speed to indicate extreme urgency - thats it! Oh - and three independant channels
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2nd January 2006, 17:58	#54 (permalink)
Nick uk. Made in England. Current Rebreather/s: Inspiration Classic Azimuth Other Rebreather/s: Azimuth Join Date: Nov 2005 Location: Viale C.Colombo 75 Marina di Carrara. MS 54036 Italy Posts: 579	Re: simple HUD Quote: (Originally Posted by Sutty) Absolutely! I basically have 3 signals: too low (flash), OK (solid), too high (flicker). Onto this is overlaid a change in colour to indicate urgency, and a change in flash speed to indicate extreme urgency - thats it! Oh - and three independant channels That sounds just like what i'd need. What do you have and where did you get it? __________________ If it aint broke....don't fix it, and if it is.............well......get another one! divechief2000@hotmail.com
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2nd January 2006, 18:04	#55 (permalink)
Sutty Classic Kiss diver Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Jun 2005 Location: Glossop, Derbyshire, UK Posts: 781	Re: simple HUD Quote: (Originally Posted by Nick uk.) That sounds just like what i'd need. What do you have and where did you get it? Its Uri's Rebreather Guardian! Review here Neil
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2nd January 2006, 18:48	#56 (permalink)
Nick uk. Made in England. Current Rebreather/s: Inspiration Classic Azimuth Other Rebreather/s: Azimuth Join Date: Nov 2005 Location: Viale C.Colombo 75 Marina di Carrara. MS 54036 Italy Posts: 579	Re: simple HUD Quote: (Originally Posted by Sutty) Its Uri's Rebreather Guardian! Review here Neil Thanks, i'll check it out! __________________ If it aint broke....don't fix it, and if it is.............well......get another one! divechief2000@hotmail.com
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2nd January 2006, 22:24	#57 (permalink)
wizbang WEB MERMEN Current Rebreather/s: Inspiration Classic Dolphin Home Build Other Rebreather/s: Not Bought Yet Inspiration Vision Evolution Prism Topaz Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Perth Australia Posts: 385	Re: simple HUD Wow, all points of the compass. I have Richards HUD system. http://insane.bug-e.net/Puffer/PPO2/index.html (you can see the original code sequence here) I asked for it to match my regular set point of 1.3 CCR setpoints: 0.0 < PPO2 < 0.4 : buzzer + solid red light 0.4 < PPO2 < 0.6 : buzzer + fast flashing red light 0.6 < PPO2 < 0.8 : fast flashing red light 0.8 < PPO2 < 1.0 : slow flashing red light 1.0 < PPO2 < 1.2 : slow flashing green light 1.2 < PPO2 < 1.4 : solid green light 1.4 < PPO2 < 1.6 : fast flashing green light 1.6 < PPO2 < 2.+ : buzzer + alternating red/green flashing light Anything other than solid means I look at the handsets. Red or fast means do it sooner rather than later and the vibrater means do it now or go to sleep. (A bit melodramatic but hey it is my life) Without trying it I don't think I would like to be given my PPO2 via the HUD. I use it as an indicator. I carry one of my handset the whole dive anyway so it is very simple to just have a look to confirm what the PPO2 is before I take action. The vibrator is the best bit, sometimes I will have added some extra O2 and then inadvertently drop down a bit and the PPO2 will spike. I can see in the HUD that it is rising and I think "I will breath it down in a tick or two (and I take some fuller breaths) but occasionally the vibrator will go off and it brings me into instant action. A heavy thumb, DOH.
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2nd January 2006, 23:18	#58 (permalink)
Nick uk. Made in England. Current Rebreather/s: Inspiration Classic Azimuth Other Rebreather/s: Azimuth Join Date: Nov 2005 Location: Viale C.Colombo 75 Marina di Carrara. MS 54036 Italy Posts: 579	Re: simple HUD Quote: (Originally Posted by wizbang) Wow, all points of the compass. I have Richards HUD system. http://insane.bug-e.net/Puffer/PPO2/index.html (you can see the original code sequence here) I asked for it to match my regular set point of 1.3 CCR setpoints: 0.0 < PPO2 < 0.4 : buzzer + solid red light 0.4 < PPO2 < 0.6 : buzzer + fast flashing red light 0.6 < PPO2 < 0.8 : fast flashing red light 0.8 < PPO2 < 1.0 : slow flashing red light 1.0 < PPO2 < 1.2 : slow flashing green light 1.2 < PPO2 < 1.4 : solid green light 1.4 < PPO2 < 1.6 : fast flashing green light 1.6 < PPO2 < 2.+ : buzzer + alternating red/green flashing light Anything other than solid means I look at the handsets. Red or fast means do it sooner rather than later and the vibrater means do it now or go to sleep. (A bit melodramatic but hey it is my life) Without trying it I don't think I would like to be given my PPO2 via the HUD. I use it as an indicator. I carry one of my handset the whole dive anyway so it is very simple to just have a look to confirm what the PPO2 is before I take action. The vibrator is the best bit, sometimes I will have added some extra O2 and then inadvertently drop down a bit and the PPO2 will spike. I can see in the HUD that it is rising and I think "I will breath it down in a tick or two (and I take some fuller breaths) but occasionally the vibrator will go off and it brings me into instant action. A heavy thumb, DOH. I like this sequence best of all i think. And i like your thinking!! __________________ If it aint broke....don't fix it, and if it is.............well......get another one! divechief2000@hotmail.com
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2nd January 2006, 23:55	#59 (permalink)
RichClark Classic KISS No. 226 Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Mar 2005 Location: Hove, UK Posts: 771	Re: simple HUD Quote: (Originally Posted by paulraymaekers) the 'easy-reading solid green or green plus..' when everything is ok, the Smithers 'alike when things not OK, and you don't have to calculate: you simply look at your gauges when things start flickering!! ok: here is the english version: http://www.fr.smartgroups.com/vault/...ype&startrow=1 (thanks richard for the correct spelling :-) have fun with the reading regards paul No problem Paul, somehow I managed to miss this thread! __________________ The more I learn about women, the more I want to go diving... just don't tell my wife I said that To taste something a little different, try http://www.thechillikitchen.co.uk
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3rd January 2006, 17:01	#60 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Re: simple HUD Anyway, for FYI, I found out that the "Smithers Code" was incorporated into the US patent filed by Juergensen Marines. So was the vibrating HUD. Etc... So if I was to build HUD system myself, I wouldn't use the code unless I get permission from Juergensen Marines. YMMV if you are a manufacturer and try to sell products in/to the US with any of those features covered in the patent... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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