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Old 17-08-2019, 09:56   #1
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Showing WP Data from Chartplotter

I did a search and could not find an answer- if there is one, I apologize.

The issue is I have a smorgasbord of instruments on my boat- NMEA 0183, Seatalk-1, SeaTalk NG, NMEA2000. Without investing a lot I have everybody talking to everybody.

Being frugal I am trying to set-up a second display on a budget.

Using Vesper XB-8000 WiFi, I have all the data streaming to iNavX on my iPad.

OpenCpn will present all the data, except for navigation data from my Garmin Chartplotter. If I select a WP on the plotter, it send nav info to the EV-100 AP, the data goes to the XB-8000 and out via WiFi to the iPad where iNavX displays it. But OpenCPN will not display the info.

The connection is configured to accept all, and I added GPBOD and GPRMB to be sure the waypoint data was getting into the program. Running the NMEA debug window, I can see the sentences. But the program does not recognize the waypoint, or BTW. Also the dashboard does not offer it as a displayable.

If I select a point to navigate to inside of OpenCPN, there is a nifty pop-up window that provides leg or route info. Ideally this should be coming up also.

Is there something I have not configured, or is this feature not yet supported?

thanks
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Old 17-08-2019, 10:33   #2
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Re: Showing WP Data from Chartplotter

Quote:
smorgasbord of instruments on my boat- NMEA 0183, Seatalk-1, SeaTalk NG, NMEA2000. Without investing a lot I have everybody talking to everybody.
This is not a very good approach, I think. It's fine to have instruments/chartplotters/opencpn talking with one another, but you must limit the talk to only what is necessary, and prevent bidirectional backtalk and duplicate talk which loads the data bus, causes GPS jumping and other anomolies. Try to keep it simple, and gradually build on that. Look at the big picture first and whittle it down.

Seatalk 1 Instruments ---one way, not bidirectional---> SeatalkNS/Nmea2000 with whatever device you have,

but I believe I would probably connect the Seatalk 1 to Vesper Xt-8000 which I believe it supports, and use Vesper's routines to convert to Nmea2000. Check Vesper's manual, and find their website page about connecting Opencpn. Search our Opencpn Manual and Supplimentary Books, there are details about using Opencpn with Vesper.

Then figure out what else is needed for autopilot etc.


but of course you already know this, Snore


Sharing/sending of waypoints is very dependent on your equipment as every manufacturer has different format requirements. Opencpn does support sending of waypoints for some Furuno and Garmin units. The other way is more problematical.


https://opencpn.org/wiki/dokuwiki/do...=send+waypoint


https://opencpn.org/wiki/dokuwiki/do...pt-rte-over-ip


Also look up beta plugin Obabel it might help.


Also do searches no this forum, there are a number of useful threads.
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Old 18-08-2019, 10:05   #3
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Re: Showing WP Data from Chartplotter

@rgleason I respectfully submit it is the PERFECT approach. I could spend $2-3 boat bucks on a full suite of electronics, or use that to cover an apartment in Paris for a month while I engineer a solution.

I did the latter.

Please accept my sincere thanks for your comments. They made me go out this morning and test for the errors you described. As you mentioned in your post, the key to making this work is moderation and to make sure critical devices like the AP only listen to one device for navigation instructions

The good news is that I proved to myself I did not have the errors you mentioned. Even better, I was able to get opencpn to receive the waypoints by manually adding them to the list of NMEA0183 sentences to accept.
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Old 18-08-2019, 11:21   #4
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Re: Showing WP Data from Chartplotter

By changing your planning method the problem might be solved. Instead of creating wp's and route on the plotter create them in OpenCPN. You definitely can upload the route to the GPS and onward to the AP. Operating this way when you action a GOTO on the plotter OpenCPN does show the active WP.
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Old 19-08-2019, 03:14   #5
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Re: Showing WP Data from Chartplotter

Good work. Perhaps you would like to share how you did this in more detail? It might find inclusion in the wiki.
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Old 19-08-2019, 07:26   #6
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Re: Showing WP Data from Chartplotter

Actually, it may appear in a future issue of a well read magazine
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