Logging direction when diving?

[dmaziuk]

That looks really awesome. I would love one of those one day, but it's hard to justify spending +700€ for something that will only be strapped at torso (or similar), not being used as a dive computer.
But thanks for giving the first real answer to my question

I've a suspicion by the time you've figured out how to hook up that data logger and overlay its reading on the footage, the cost won't be too far from 700€. However as I recall from reading their manuals, it's not clear if they actually log the readings (there's an app to show them in the process but no fine detail is provided). i THINK @kelemvor has one of them, he might know.

 

[Gone for diving]

I am surprised no one has made some kinda gps/ gyro compass/ g meter to log underwater tracking,,, I assume if you have beginning and end GPS coordinates to place it on a map,
Then calculate movement and a gyro compass, plus time, you should be able to map your underwater movements with a relatively accurately,,,
Possibly every now and then, in a current you might have to hang on to something and stand still for more accuracy....
I am not smart enough to make something like that but I think it should be doable....

 

[FlutterTubes]

I've a suspicion by the time you've figured out how to hook up that data logger and overlay its reading on the footage, the cost won't be too far from 700€. However as I recall from reading their manuals, it's not clear if they actually log the readings (there's an app to show them in the process but no fine detail is provided). i THINK @kelemvor has one of them, he might know.

That's very possible.
Although, I have already figured some stuff out. For instance the line that tracks the dive profile is all custom programming (video)
I never touch a video editor when I make my videos. It's all done using ffmpeg in a script that I wrote.. </gloat>

 

[FlutterTubes]

I am surprised no one has made some kinda gps/ gyro compass/ g meter to log underwater tracking,,, I assume if you have beginning and end GPS coordinates to place it on a map,
Then calculate movement and a gyro compass, plus time, you should be able to map your underwater movements with a relatively accurately,,,
Possibly every now and then, in a current you might have to hang on to something and stand still for more accuracy....
I am not smart enough to make something like that but I think it should be doable....

Me too! The paralenz really should at least incorporate a compass.

 

[dmaziuk]

I am surprised no one has made some kinda gps/ gyro compass/ g meter to log underwater tracking,,, I assume if you have beginning and end GPS coordinates to place it on a map,
Then calculate movement and a gyro compass, plus time, you should be able to map your underwater movements with a relatively accurately,,,
Possibly every now and then, in a current you might have to hang on to something and stand still for more accuracy....
I am not smart enough to make something like that but I think it should be doable....

Currents are hard. I did a night dive the other night: I swam out in front of the entry point, dropped to the bottom of the reef and made a zig-zag way up... I came up in the next cove to the South and I didn't feel any current at all on either zigs or zags.

IMU will have the same problem and you'll need a fancy algorithm to retrofit your track to star & end GPS coordinates... could be an interesting project.

 

[FlutterTubes]

Currents are hard. I did a night dive the other night: I swam out in front of the entry point, dropped to the bottom of the reef and made a zig-zag way up... I came up in the next cove to the South and I didn't feel any current at all on either zigs or zags.

IMU will have the same problem and you'll need a fancy algorithm to retrofit your track to star & end GPS coordinates... could be an interesting project.

Sure positioning is probably too difficult. But at least give us a compass...

 

[GF99/99]

Closest thing I can think of is the computer system that Suex offers for there DPV's

I am surprised no one has made some kinda gps/ gyro compass/ g meter to log underwater tracking,,, I assume if you have beginning and end GPS coordinates to place it on a map,
Then calculate movement and a gyro compass, plus time, you should be able to map your underwater movements with a relatively accurately,,,
Possibly every now and then, in a current you might have to hang on to something and stand still for more accuracy....
I am not smart enough to make something like that but I think it should be doable....

That's very possible.
Although, I have already figured some stuff out. For instance the line that tracks the dive profile is all custom programming (video)
I never touch a video editor when I make my videos. It's all done using ffmpeg in a script that I wrote.. </gloat>

As I said earlier closest thing is the Suex computer for there DPV's. I have never used one but it pretty much maps your dive and you can overlay it on a map/satellite image. DRIVe - Suex


And also as I mentioned be for the old school manual way would be to use a Mnemo. But this requires a line however it is very accurate. I have used these for cave mapping and its super easy and the software is nice, allows you to upload and overlay it to google maps

 

[Rygar]

Try Seacraft ENC navigation:

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[FlutterTubes]

Try Seacraft ENC navigation:

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Woow. Now that is something!!

 

[Gone for diving]

Try Seacraft ENC navigation:

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Buy your Underwater Navigation Console SEACRAFT ENC3 ✓ Best Electronic Scuba Positioning System for Divers, look at the price ➤ Order DPV GPS Inertial Navigation Unit SEACRAFT ENC3 with worldwide delivery!

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Hmmm,,
Might need that, after I finished my project,