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DIY Free Diving Computer Feedback

Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.
ggalisky

ggalisky

Member
Apr 7, 2021
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The battery will be a rechargeable lithium battery and will be user replaceable
 
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Reactions: Gab
A

Adrian Peterson

New Member
Mar 24, 2021
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These are great suggestions
 
A

Adrian Peterson

New Member
Mar 24, 2021
8
1
3
41
These are great suggestions
Sorry, premature posting.
I second reducing the data to 2 stats per page and increasing font size. Color is not important to me. Vibra-alerts would be great. How hard would adding voice alerts be. If it vibrated then told you what the notification was for it would take the guessing out of it, trying to remember what each sound was for.
I also second the uselessness of a wrist mounted pulse oximeter. As a paramedic, professional pulse oximeters attached to heart monitors are finicky enough. I'd have no confidence in any watch or phone that claims accuracy.
Bluetooth would be nice, but keeping the cost down would be a higher priority for me. I also don't need the gps.

Congrats on the impressive prototype. I have no idea how one builds such a device, much less in that short of time.
 
J Campbell

J Campbell

Well-Known Member
Sep 17, 2001
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@ggalinsky Just curious, what/how are you doing depth sensing? And also, have you take into account the differenent density of salt vs fresh water - it can make a difference depth reading.
 
M

mad mat

Well-Known Member
Jan 20, 2006
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Units of measure has always been a bug bear. It’s either metric or imperial for everything. I live the rest of the modern world operate on metric so like temp in degrees celcius but am an old salt and like depth in feet. I have no idea how far 10m is but 30ft I’m all over it.

having the ability to select what unit of measure applies to each unit Would be good.
 
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marco15499

marco15499

Laguneros Spearfishing
Apr 4, 2011
347
141
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Units of measure has always been a bug bear. It’s either metric or imperial for everything. I live the rest of the modern world operate on metric so like temp in degrees celcius but am an old salt and like depth in feet. I have no idea how far 10m is but 30ft I’m all over it.

having the ability to select what unit of measure applies to each unit Would be good.
That's easy. If you multiply meters by 3.3 you get feet. :)
 
ggalisky

ggalisky

Member
Apr 7, 2021
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Absolutely excellent work, well done!

Are you looking for testers, code reviewers, or additional software developers? This sounds like a great project I would be happy to help with in my free time.
I need help with in all of those area's, I'll send you a PM
 
ggalisky

ggalisky

Member
Apr 7, 2021
15
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That's easy. If you multiply meters by 3.3 you get feet. :)
By default I think I'll display in metric, but also include a mode called "freedom units" that measures the depth in inches :)
 
ggalisky

ggalisky

Member
Apr 7, 2021
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By chance, does anyone know of spots in southern California that drop off rather quickly? I am trying to find some deep spots close to shore to do testing at
 
M

mad mat

Well-Known Member
Jan 20, 2006
32
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By chance, does anyone know of spots in southern California that drop off rather quickly? I am trying to find some deep spots close to shore to do testing at
Hi,
if you are just testing depth, why don’t you do it in the lab. if you can build a watch, I’m sure you can sort out a pressure tester. You probably rig up something to press that buttons under pressure too. Don’t need to worry about weather, boats vis etc. Or send a couple to people on here for testing
 
ggalisky

ggalisky

Member
Apr 7, 2021
15
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1620869126035
 
ggalisky

ggalisky

Member
Apr 7, 2021
15
10
18
23
If I could get a head mounted optical heart rate and SpO2 sensor working well would y'all be interested in that?
 
xristos

xristos

Well-Known Member
Sep 5, 2013
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If I could get a head mounted optical heart rate and SpO2 sensor working well would y'all be interested in that?
If you tested it and the readings are decent it could be a nice optional extra in my opinion.
 
G

Gab

Well-Known Member
Aug 4, 2011
315
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83
If I could get a head mounted optical heart rate and SpO2 sensor working well would y'all be interested in that?

I would but I am worried it will interfere with the mask's seal.
 
7BDiver

7BDiver

Active Member
Sep 5, 2019
180
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A forehead sensor sounds more usable to me. It could incorporate a silicone skirt that would minimally interfere with the mask, stick to the skin well and sit under the hood in a place that sees the least movement for accuracy. I think this would be very insightful information to have for dives.
 
7BDiver

7BDiver

Active Member
Sep 5, 2019
180
66
43
34
A forehead sensor sounds more usable to me. It could incorporate a silicone skirt that would minimally interfere with the mask, stick to the skin well and sit under the hood in a place that sees the least movement for accuracy. I think this would be very insightful information to have for dives.
 
J Campbell

J Campbell

Well-Known Member
Sep 17, 2001
620
192
148
67
It would also be nice to have a lap counter for regular pool lap swimming.
 
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