Very Small Panel Meters

teomannaskali · 4th January 2008, 15:58

What is the model and did you need to hack the meter?

DanFountain · 4th January 2008, 17:02

Quote: (Originally Posted by teomannaskali)

Hmm
Wish you had posted earlier....

Umm, isn't that one of Mark Munro's boards Sound Underwater Survey - Excellence in marine remote sensing ? They have been discussed at length on here before, I thought...

If not, my apologies. I've lunked on this thread on and off and thought that you wanted something smaller / cheaper / other than the Datel meters.

Here's my re-arranged version of Mark's Gen Six triple display. No opamps, no hacking of the meter, fits easily with battery in half of an OMS tube.

Dan

rchrds · 4th January 2008, 22:52

Quote: (Originally Posted by DanFountain)

Umm, isn't that one of Mark Munro's boards Sound Underwater Survey - Excellence in marine remote sensing ? They have been discussed at length on here before, I thought...

If not, my apologies. I've lunked on this thread on and off and thought that you wanted something smaller / cheaper / other than the Datel meters.

Here's my re-arranged version of Mark's Gen Six triple display. No opamps, no hacking of the meter, fits easily with battery in half of an OMS tube.

Dan

Dan- yes, that is one of Mark's old boards. Date on it is 2000- which is probably the last time I really worked hard on the unit. Anyway, it works pretty well, but I hate the size of the housing. I was going exactly the direction you were with the smaller displays- was looking at the Martel OEM 1B model- very small- perhaps about the size of the ones you have in your picture? Same thing- no opamps, etc. I ideally wanted to get it all in a box the size of the Liquivision (attach it via the the attachment point, and eventually port one of the sensor outputs to an IR transmitter...(pipe dreams!!) Holy cow. I didn't realize Mark was still making these things. I think I will order a new board from him. Forget trying to hack it out myself. YEA!!

(Thanks for the link!)

Jason

undrh2o · 4th January 2008, 23:01

Quote: (Originally Posted by DanFountain)

Umm, isn't that one of Mark Munro's boards Sound Underwater Survey - Excellence in marine remote sensing ? They have been discussed at length on here before, I thought...
<snip>

More specifically this link - Details of PPO2 Displays

teomannaskali - I thought you had seen the Mark Monroe ones before

I guess it just goes to prove you can arrive at the same point starting from two different locations (US/Turkey)

teomannaskali · 4th January 2008, 23:11

I remember looking at his meters a long time ago. bu because of the arrangement and the picutre of the 3 dpms and the battery being so long, it seemed to me like he was using the larger type displays.

oh well...

I am happy with what I did.

How much do the datel's cost?
Lascars are 28usd on ebay.

teomannaskali · 4th January 2008, 23:25

Why didnt I see the OEM 1 B before!

That is clearly a better choice! As the lascars that I am using (SP400)
do not have the reference voltage pins. So you have to hack inside the panel meter to access them. But they do look nice and compact.

Teoman

undrh2o · 4th January 2008, 23:32

Mouser (US) has the Datels for $32

Edvin M · 5th January 2008, 00:03

Quote: (Originally Posted by teomannaskali)

Why didnt I see the OEM 1 B before!

That is clearly a better choice! As the lascars that I am using (SP400)
do not have the reference voltage pins. So you have to hack inside the panel meter to access them. But they do look nice and compact.

Teoman

I think the SP200 has them too

OceanOpportunity · 5th January 2008, 03:56

wow..the munro version 6 is TINY! anyone out there producing short runs of assembled units for the folks like me who are less than skilled working with boards?

teomannaskali · 5th January 2008, 18:14

A new question

Suppose that I am aiming for 2 cell system.

Then
Option 1:
Have 2 independent ppo2 displays

Option 2:
Have 1 ppo2 display inside the same housign

Option 3:
Have 2 independent dual ppo2 displays.

Now with the setup that I have made. 2 ppo2 displays inside the same housing. I have option 2. How can I upgrade to option 3. Use 2 of the same ppo2 displays? I would have to leave out the 10K resistors on one set of displays.

But If I have a flood then what? If the flood shorts the cell on the other side then it is useless to have independant dual ppo2 displays! Is there an way of doing this? If I completely potted the lines to the display maby? how does the DPM behave when it is flooded?

Teoman

4th January 2008, 15:58	#61 (permalink)
teomannaskali RBW Member Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Home Build Join Date: Feb 2006 Location: Istanbul TR Posts: 421	Re: Very Small Panel Meters What is the model and did you need to hack the meter?
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4th January 2008, 17:02	#62 (permalink)
DanFountain This is my custom title! Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Dec 2005 Location: Lake Superior Posts: 113	Re: Very Small Panel Meters Quote: (Originally Posted by teomannaskali) Hmm Wish you had posted earlier.... Umm, isn't that one of Mark Munro's boards Sound Underwater Survey - Excellence in marine remote sensing ? They have been discussed at length on here before, I thought... If not, my apologies. I've lunked on this thread on and off and thought that you wanted something smaller / cheaper / other than the Datel meters. Here's my re-arranged version of Mark's Gen Six triple display. No opamps, no hacking of the meter, fits easily with battery in half of an OMS tube. Dan __________________ Try not. Do - or do not. There is no try. -Yoda Last edited by DanFountain : 4th January 2008 at 17:54. Reason: Loose nut on the keyboard!
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4th January 2008, 22:52	#63 (permalink)
rchrds New Member Current Rebreather/s: Other CCR RB80 / Clone Home Build Other Rebreather/s: Other CCR RB80 / Clone Home Build Join Date: Feb 2005 Location: Clarksville, TN Posts: 42	Re: Very Small Panel Meters Quote: (Originally Posted by DanFountain) Umm, isn't that one of Mark Munro's boards Sound Underwater Survey - Excellence in marine remote sensing ? They have been discussed at length on here before, I thought... If not, my apologies. I've lunked on this thread on and off and thought that you wanted something smaller / cheaper / other than the Datel meters. Here's my re-arranged version of Mark's Gen Six triple display. No opamps, no hacking of the meter, fits easily with battery in half of an OMS tube. Dan Dan- yes, that is one of Mark's old boards. Date on it is 2000- which is probably the last time I really worked hard on the unit. Anyway, it works pretty well, but I hate the size of the housing. I was going exactly the direction you were with the smaller displays- was looking at the Martel OEM 1B model- very small- perhaps about the size of the ones you have in your picture? Same thing- no opamps, etc. I ideally wanted to get it all in a box the size of the Liquivision (attach it via the the attachment point, and eventually port one of the sensor outputs to an IR transmitter...(pipe dreams!!) Holy cow. I didn't realize Mark was still making these things. I think I will order a new board from him. Forget trying to hack it out myself. YEA!! (Thanks for the link!) Jason
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4th January 2008, 23:01	#64 (permalink)
undrh2o Chris Miller Current Rebreather/s: Other CCR Dolphin Home Build Other Rebreather/s: Inspiration Classic Other CCR Dolphin Home Build Join Date: Apr 2006 Location: Ottawa, Canada Posts: 206	Re: Very Small Panel Meters Quote: (Originally Posted by DanFountain) Umm, isn't that one of Mark Munro's boards Sound Underwater Survey - Excellence in marine remote sensing ? They have been discussed at length on here before, I thought... <snip> More specifically this link - Details of PPO2 Displays teomannaskali - I thought you had seen the Mark Monroe ones before I guess it just goes to prove you can arrive at the same point starting from two different locations (US/Turkey)
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4th January 2008, 23:11	#65 (permalink)
teomannaskali RBW Member Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Home Build Join Date: Feb 2006 Location: Istanbul TR Posts: 421	Re: Very Small Panel Meters I remember looking at his meters a long time ago. bu because of the arrangement and the picutre of the 3 dpms and the battery being so long, it seemed to me like he was using the larger type displays. oh well... I am happy with what I did. How much do the datel's cost? Lascars are 28usd on ebay.
(Offline)

4th January 2008, 23:25	#66 (permalink)
teomannaskali RBW Member Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Home Build Join Date: Feb 2006 Location: Istanbul TR Posts: 421	Re: Very Small Panel Meters Why didnt I see the OEM 1 B before! That is clearly a better choice! As the lascars that I am using (SP400) do not have the reference voltage pins. So you have to hack inside the panel meter to access them. But they do look nice and compact. Teoman
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4th January 2008, 23:32	#67 (permalink)
undrh2o Chris Miller Current Rebreather/s: Other CCR Dolphin Home Build Other Rebreather/s: Inspiration Classic Other CCR Dolphin Home Build Join Date: Apr 2006 Location: Ottawa, Canada Posts: 206	Re: Very Small Panel Meters Mouser (US) has the Datels for $32
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5th January 2008, 00:03	#68 (permalink)
Edvin M RBW Member Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Aug 2007 Location: Lysekil, Sweden Posts: 121	Re: Very Small Panel Meters Quote: (Originally Posted by teomannaskali) Why didnt I see the OEM 1 B before! That is clearly a better choice! As the lascars that I am using (SP400) do not have the reference voltage pins. So you have to hack inside the panel meter to access them. But they do look nice and compact. Teoman I think the SP200 has them too
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5th January 2008, 03:56	#69 (permalink)
OceanOpportunity for a world of water Current Rebreather/s: Other CCR Dolphin Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Other CCR Dolphin Home Build Join Date: Nov 2006 Location: Providence, RI USA Posts: 596	Re: Very Small Panel Meters wow..the munro version 6 is TINY! anyone out there producing short runs of assembled units for the folks like me who are less than skilled working with boards? __________________ Michael Lombardi Oceans of Opportunity www.oceanopportunity.com Elected Director, Society for Human Performance in Extreme Environments MN'07, The Explorers Club Project Manager, Diving a Dream
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5th January 2008, 18:14	#70 (permalink)
teomannaskali RBW Member Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Home Build Join Date: Feb 2006 Location: Istanbul TR Posts: 421	Re: Very Small Panel Meters A new question Suppose that I am aiming for 2 cell system. Then Option 1: Have 2 independent ppo2 displays Option 2: Have 1 ppo2 display inside the same housign Option 3: Have 2 independent dual ppo2 displays. Now with the setup that I have made. 2 ppo2 displays inside the same housing. I have option 2. How can I upgrade to option 3. Use 2 of the same ppo2 displays? I would have to leave out the 10K resistors on one set of displays. But If I have a flood then what? If the flood shorts the cell on the other side then it is useless to have independant dual ppo2 displays! Is there an way of doing this? If I completely potted the lines to the display maby? how does the DPM behave when it is flooded? Teoman
(Offline)

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