[PSUBS-MAILIST] DSV Aquatic update

[Cliff Redus via Personal_Submersibles]

I use an Airmar DST800  http://www.airmar.com/uploads/Brochures/dst800.pdf
for altitude and speed on the R300. Cost about $230.  It also give water
tempertarure.  It would be compatible with what you have done as it sends
results via serical communciaiton using NMEA 0183 prototcal.  The unit
sends a series of ASCII strings for depth, speed and temperature that you
would have to capture and parse to use.  I do this in my PLC.  The only
down side I see for your boat is the depth spec which is about 230 ft.  I
have seen a number of sounders that use NMEA 0183 serial or NEMA 2000
communication for sending altitude.

Some how Jon, I don't think I would find you sitting on the bottom at night
on a 45 degree pitch,  inebriated, and calling for a lift bag!   But I do
agree we can find all kinds of good reasons to add new stuff to our boats!

Cliff

On Thu, May 24, 2018 at 10:55 AM, Jon Wallace via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Cliff,
>
> I will probably add altitude as soon as I can find a sensor that will
> interact with the Raspberry.  Also not shown is air tank pressure which
> will be added.
>
> I agree that not all data is as important as others.  Regarding the pitch
> and roll, I agree with your assessment on that as well.  The pitch and roll
> outputs are "free", calculated as part of the digital compass heading which
> is tilt compensated, so I added them in even though they are not very
> useful in this particular submarine application.  However, should I find
> myself in a night dive, stranded on the bottom, with the rear ballast tank
> blown off the stern, drunk, incoherent, and unable to ascertain spatial
> awareness; the data will come in handy so I can inform surface support that
> I am sitting on the bottom pitched up 45 degrees and need a lift bag
> attached to the stern.  :)  See...we can justify anything.
>
>
>
> ------------------------------
> *From:* Cliff Redus via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Thursday, May 24, 2018 11:15 AM
> *Subject:* Re: [PSUBS-MAILIST] DSV Aquatic update
>
> I see depth on your navigation HMI but not altitude.  Are you planning on
> adding this sensor?  Having run my boat for several years, I find that all
> data is not equally important.  What I find I check a lot are SOF of air
> tanks, SOC of batteries, depth, altitude, O2 and CO2 levels, and compass
> heading.  Other parameters I check less frequently.  Also you use an
> aircraft roll, pitch and compass heading style indictor which looks very
> nice.  Having said that, my experience is that K boats have a large spread
> between CB and CG.  As such my guess is that your indicator will not show
> much variation in pitch or roll under normal operating conditions but of
> course your heading will be active.
>
> Keep updates coming.  I enjoyed video.  Would be nice to have voice over
> as you walk through buttons and screens on HMI.
>
> Best Regards
>
> Cliff
>
>
>
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