Old DataMarine instrument …does it speak NMEA0183?

Tally Ho

Tally Ho

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Jan 7, 2011
5,319
Oday 322 East Chicago, IN
jviss said:
Updating my post on an Arduino adapter for this. The 0.1 mile pulse is going to result in a very slow update rate, like once per minute at 6 knots, once every 6 minutes at 1 knot, and so forth. Not very useful. I was thinking, with the schematic of the S100KL it's probably possible to tap the pulses from the transducer, which should be much, much more frequent! This would require an "invasive" adapter, but I'm sure it's possible.
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Probably not in my skill level….and I don’t really care ALL that much…I have true wind on my CP, I am on fresh water lake with no appreciable current. But it bugs me that my Tac Tic wireless display won’t give me true wind (I get obsessed that way).

If @kappykaplan has some helpful (and cheap) adaptor info, I may give it a try…but nothing too expansive or difficult.

Greg
 
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jviss

jviss

.
Feb 5, 2004
7,089
Tartan 3800 20 Westport, MA
Tally Ho said:
Probably not in my skill level….and I don’t really care ALL that much…I have true wind on my CP, I am on fresh water lake with no appreciable current. But it bugs me that my Tac Tic wireless display won’t give me true wind (I get obsessed that way).

If @kappykaplan has some helpful (and cheap) adaptor info, I may give it a try…but nothing too expansive or difficult.

Greg
Click to expand
Yes, I get that.
 
jviss

jviss

.
Feb 5, 2004
7,089
Tartan 3800 20 Westport, MA
As a side note, while in school for electrical engineering, I worked at a marine electronics place in Mamaroneck, NY the summer of '80. We used to repair Datamarine instruments, among other things. I loved Datamarine! They are really good looking instruments, and well built. Their service documentation was superb, with not only schematics and parts lists, but really well written theory of operation, circuit explanations, etc. It was an education fixing those. The things that went wrong were component failures, not the fault of DM.

I have often toyed with the idea of buying some and building the circuits necessary to adapt and network them via NMEA2K. One consideration, though, is the instrument requires a fairly large hole! :)
 
Ward H

Ward H

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Nov 7, 2011
3,765
Catalina 30 Mk II Cedar Creek, Bayville NJ
When I installed my RM instrument system back in 2018 I was studying all aspects of the system on the RM Forum site. ( the site is closed to new questions but available for viewing).
One posting that I studied and learned from was RM's explantation of TWS, AWS, TWA, etc.
It can be found here: Apparent Wind, True Wind and Sound Wind

@Tally Ho I agree with @jssailem, an iTC5 is designed to pick up data from transducers, convert it and put it on a NMEA2k network. Have the transducer feeding data to your DM display connected to an iTC5 may solve your problem.

I recently found this information on the RM forum that may be useful. A friend asked me if I knew how to put TACK Tick data on the network.
I found this post:
"Should the T220 TackTick Wind Transducer be installed and should you desire the associated wind data to be available to an i70S or to an Axiom MFD (lacks NMEA 0183 interface), then the following would be recommended per the FAQ:

- install TackTick T101 Wireless Multi Wind System and a Micro-Talkâ„¢ Wireless Gateway. The Micro-Talkâ„¢ Wireless Gateway and MFD will each be interfaced as spurs to a powered and properly terminated SeaTalkng / NMEA 2000 backbone.

As you can see, the TackTick T101 Wireless Multi Wind System includes not only the T120 Wireless wind transmitter, but also the T112 Multifunctional wireless analogue display. The latter display is required to calibrate the T120 wireless wind transmitter and to communicate with the Micro-Talkâ„¢ Wireless Gateway. The Micro-Talkâ„¢ Wireless Gateway, MFD, and i70S MFID(s) will each then be interfaced an individual spur to a powered and properly terminated SeaTalkng / NMEA 2000 backbone. Each of these devices will then have access to wind data."

Sorry, didn't get the link but a quick search on that forum should retrieve it.
 
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Tally Ho

Tally Ho

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Jan 7, 2011
5,319
Oday 322 East Chicago, IN
Ward H said:
Tallyho has a Corinthian Series DMI. Maybe because it is a Corinthian Performance Series?
Click to expand
Mine doesn’t say “performance”. Maybe that is the difference.

IMG_2012.png IMG_1981.jpeg


My unit doesn’t have an useful connections other than what looks like a small coax connection from the impeller.

@kappykaplanm thanks for the details and photos…unfortunately, I don’t think my DMI instrument has the same outputs yours has.

thanks,

Greg
 
jviss

jviss

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Feb 5, 2004
7,089
Tartan 3800 20 Westport, MA
Ward H said:
Tallyho has a Corinthian Series DMI. Maybe because it is a Corinthian Performance Series?
Click to expand
I don't think that's the case, but I could be mistaken. He has an S100KL, which is the basic instrument. The Corinthian Series has the "CS" prefix in the model number.
 
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K

Kelsa

.
Sep 22, 2023
4
maufac 19 lake
jviss said:
As a side note, while in school for electrical engineering, I worked at a marine electronics place in Mamaroneck, NY the summer of '80. We used to repair Datamarine instruments, among other things. I loved Datamarine! They are really good looking instruments, and well built. Their service documentation was superb, with not only schematics and parts lists, but really well written theory of operation, circuit explanations, etc. It was an education fixing those. The things that went wrong were component failures, not the fault of DM.

I have often toyed with the idea of buying some and building the circuits necessary to adapt and network them via NMEA2K. One consideration, though, is the instrument requires a fairly large hole! :)
Click to expand
We are still in business as DMI Marine....www.dmimarine.com still fixing units with nixie tubes and have replacement units that fit in the 4 " cut out...Phoenix System...all aluminium housing and real glass and real support
 
Mark Maulden

Mark Maulden

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Jan 25, 2011
2,432
S2 11.0A Anacortes, WA
He rebuilt my wind indicator couple years ago. It had suffered mechanical damage. He now has the masthead unit which basically disintegrated over time. The shipping companies quoted me shipping to MA from WA of $100.00. I dripped it off in person since I was in MA a few weeks later. Nice guy! His backlog is about three weeks. Should have it this coming week.
 
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