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<DIV>Hi Guys,</DIV>
<DIV> </DIV>
<DIV>As I understand it, the accuracy and cost of the INS sensors have continued
to improve substantially. The specs I see now compared to what I
was seeing a couple of years ago seem to indicate that, however I've not
had any direct experience with them. The first challenge is then to
integrate it into a display system. If you've seen Cliff's display in the
R300, that's the type I'm talking about although he doesn't have an INS, and
that display doesn't have an easy download function. It's my
understanding that a later model does have capability for logging
and downloading to a thumb drive. </DIV>
<DIV> </DIV>
<DIV>Alec, thanks for sharing your experience. I think a couple of other
guys have researched INS in the past.</DIV>
<DIV> </DIV>
<DIV>Steve M., this might be a great topic for a tech session at our next
convention by someone with an electronics background. I'm somewhat lacking
in that department.</DIV>
<DIV> </DIV>
<DIV>Cheers,</DIV>
<DIV>Jim T.</DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 12/13/2014 7:31:59 A.M. Central Standard Time,
personal_submersibles@psubs.org writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" color=#000000 size=2 face=Arial>
<DIV>I worked with a volunteer who developed a low cost system with a small
screen and a low cost sensor of the class used in cell phones. The display had
a "start" button to reset, and displayed a track of the path followed. He did
a great job of it, but our conclusion was the sensor just didn't have
sufficient accuracy yet. This was about 2/3 years ago.<BR><BR>Best,</DIV>
<DIV><BR></DIV>
<DIV>Alec<BR>
<DIV><BR></DIV></DIV>
<DIV><BR>On Dec 12, 2014, at 10:07 PM, Hugh Fulton via Personal_Submersibles
<<A title=mailto:personal_submersibles@psubs.org
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>>
wrote:<BR><BR></DIV>
<BLOCKQUOTE type="cite">
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<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'>Hi
Jim,<O:P></O:P></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'>That
is a really great bit of information you have posted. I am really keen
to progress something that is afforadable. Has anyone put together an
INS system which is low cost?<O:P></O:P></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'>I
was in touch with someone a couple of years ago who was going to do a system
for less than half what is currently available but have not heard anything
more. Any other leads?<O:P></O:P></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'>Regards,
Hugh <O:P></O:P></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'><O:P> </O:P></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN lang=EN-NZ
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'><O:P> </O:P></SPAN></P></DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: #1f497d'><O:P> </O:P></SPAN></P>
<DIV>
<DIV
style="BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0cm; PADDING-TOP: 3pt; PADDING-LEFT: 0cm; BORDER-LEFT: medium none; PADDING-RIGHT: 0cm">
<P class=MsoNormal><B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'>From:</SPAN></B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'>
Personal_Submersibles [<A
title=mailto:personal_submersibles-bounces@psubs.org
href="mailto:personal_submersibles-bounces@psubs.org">mailto:personal_submersibles-bounces@psubs.org</A>]
<B>On Behalf Of </B>via Personal_Submersibles<BR><B>Sent:</B> Saturday, 13
December 2014 3:05 p.m.<BR><B>To:</B> <A
title=mailto:personal_submersibles@psubs.org
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A><BR><B>Subject:</B>
[PSUBS-MAILIST] Inertial navigation,
3-axis<O:P></O:P></SPAN></P></DIV></DIV>
<P class=MsoNormal><O:P> </O:P></P>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>Hi Hank,</SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>I'm a bit delayed in
getting back to you. Below are some links regarding Inertial
Navigation Systems (INS). Some are specifically designed
for underwater applications. The modules have become quite
small (1" square). My desire is to have the entire track display
onscreen and download it to a thumb drive at the end of the
mission. </SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>One of the
advantages of 3-axis INS is that it can provide heading, depth, rate of
ascent/descent, speed independent of current, drift, tilt, etc.</SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>Obviously a starting
point has to be established on the surface (GPS or other position
reference and compass heading). However in many situations
such as when operating from a lake ramp, you could just label the
launch as "Starting Point" and call the initial heading "0" or
whatever no matter which direction you're headed assuming you're going
to be returning to the starting point.</SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>SBG Systems has been
making rapid advancements in accuracy and cost reduction for INS.
However inertial changes in small, manned submersibles are much smaller than
in submarines, boats, and aircraft. If I were to the point of putting
together a system, I would contact them for advice on which components to
use to build it.</SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>Jim</SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>SBG
Systems:</SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><A
title=http://www.sbg-systems.com/products/subsea-inertial-systems-overview
href="http://www.sbg-systems.com/products/subsea-inertial-systems-overview">http://www.sbg-systems.com/products/subsea-inertial-systems-overview</A><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><A
title=http://www.sbg-systems.com/products/inertial-systems-overview
href="http://www.sbg-systems.com/products/inertial-systems-overview">http://www.sbg-systems.com/products/inertial-systems-overview</A><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><A
title=http://www.sbg-systems.com/docs/Article-SBG-SYSTEMS-ON&T.pdf
href="http://www.sbg-systems.com/docs/Article-SBG-SYSTEMS-ON&T.pdf">http://www.sbg-systems.com/docs/Article-SBG-SYSTEMS-ON&T.pdf</A><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><A
title=http://www.sbg-systems.com/products/ig-30-3d-compass
href="http://www.sbg-systems.com/products/ig-30-3d-compass">http://www.sbg-systems.com/products/ig-30-3d-compass</A><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>Sparkfun:</SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><A
title=https://www.sparkfun.com/products/12916
href="https://www.sparkfun.com/products/12916">https://www.sparkfun.com/products/12916</A><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><A
title=https://www.sparkfun.com/search/results?term=compass&what=products
href="https://www.sparkfun.com/search/results?term=compass&what=products">https://www.sparkfun.com/search/results?term=compass&what=products</A><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>OceanServer:</SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><A
title=http://www.oceanserver-store.com/
href="http://www.oceanserver-store.com/">http://www.oceanserver-store.com/</A><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><A
title=http://www.ocean-server.com/compass.html?gclid=CKHazZGbiLMCFQpgMgodAQgALg
href="http://www.ocean-server.com/compass.html?gclid=CKHazZGbiLMCFQpgMgodAQgALg">http://www.ocean-server.com/compass.html?gclid=CKHazZGbiLMCFQpgMgodAQgALg</A><O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> <O:P></O:P></SPAN></P></DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'><BR><BR>__________
Information from ESET NOD32 Antivirus, version of virus signature database
10870 (20141212) __________<BR><BR>The message was checked by ESET NOD32
Antivirus.<BR><BR><A title=http://www.eset.com/
href="http://www.eset.com/">http://www.eset.com</A><O:P></O:P></SPAN></P></DIV><BR><BR>__________
Information from ESET NOD32 Antivirus, version of virus signature database
10870 (20141212) __________<BR><BR>The message was checked by ESET NOD32
Antivirus.<BR><BR><A title=http://www.eset.com/
href="http://www.eset.com/">http://www.eset.com</A><BR></DIV></BLOCKQUOTE>
<BLOCKQUOTE type="cite">
<DIV><SPAN>_______________________________________________</SPAN><BR><SPAN>Personal_Submersibles
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