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SeaTalk NMEA Bridge128SD w. repeater display, Keyboard and USB
SeaTalk NMEA Bridge128SD w. repeater display, Keyboard and USB
238.00EUR
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SeaTalk NMEA Bridge128SD w. repeater display, Keyboard and USB 238.00EUR

+ Shipping / Versandkosten

The SeaTalk(R) <-> NMEA Bridge is a stand alone single chip computer, that translates information between SeaTalk and NMEA. It can read & write NMEA and read & write SeaTalk data.
(SeaTalk is registered trademark of Raymarine Ltd. Raymarine)

  • It translates SeaTalk data into NMEA data, so that you have depth, wind speed and direction, water temerature, position, rudder angel, speed etc. available on your board pc.
  • It translates NMEA data into SeaTalk, so that you can, for example, control the autopilot from the navigation software on the board pc.
  • The seatalk bridge comes with housing and LCD display.
    This LCD Display acts as an additional display for relevant navigation data from Seatalk and NMEA devices right on the chart table.
  • It works stand alone or in combination with your board PC. No need to have a power consuming PC running on the chart table.
  • With the latest software version, the bridge is also a remote control for a SeaTalk autopilot.+10,+1+,-1,-10,Auto,Standby,Track with visual feedback of course and rudder position.
  • With the latest software version, the bridge also calculates true wind heading and speed from either speed over ground or speed through water. It shows wind data in it's easily readable "big digits" display page
    Hardware is allready prepeared for logging feature. Will be available soon in one of the next software versions. (Can be installed by user)
    With this display you can see data like speed, depth, position, windspeed, waypoint info, etc. combined from both systems ( SeaTalk and NMEA ) on one display.


    Bridge with display and keypad

    1 * SeaTalk , 1 * NMEA ,
    1 * RS232 , 1 * USB


    • ATmega128 Processor
    • 1 * SeaTalk Port ( read & write SeaTalk ), galvanic isolated
    • 1 * NMEA Port ( read & write NMEA data ), IN-Port galvanic isolated
    • 1 * RS232 Port ( read & write NMEA data )
    • 1 * USB Port ( read & write NMEA data )
    • On board volatage regulator for operation with 12 Volt or 24 Volt
    • LCD display
    • Keyboard with 7 pushbuttons and led's
    • Boot loader (to update to new Software Versions)
    • Comes with printed manual and CD.
    • For developers, all source codes, compiler,boot loader software are available upon request.

    Baudrates for USB port and NMEA ports can be adjusted seperately from 300 to 38400 Baud.

    Here is a simple example on what you can do with the SeaTalk NMEA Bridge.
    Connect your SeaTalk Instruments and your NMEA Network
    Have data from SeaTalk devices and from NMEA device combined in one display at the chart table.

    click on the picture to get a bigger picture

    • Get data from your SeaTalk instruments to NMEA devices or to your computer
      If you have a Raymarine St60 Tridata, a ST40 Wind Instrument or other SeaTalk devices, the SeaTalk NMEA Bridge will translate information from SeaTalk to NMEA.
      With this function a navigation notebook or a chartplotter can now display wind direction, wind speed, water depth, speed through water and much more.
    • Send Data from your NMEA Devices to SeaTalk Instrumens.
      A ST60 Tridata can display Speed over Ground (SOG). The SeaTalk Nmea Bridge gets SOG from your GPS and sends it to the St60.
      The speed through water (STW) function of a ST60 tridata needs to be adjusted.
      The paddle wheels are different, waterflow arround different types of boat hulls are different - therfore your log need propper adjustent in order to display a correct STW.
      With the SeaTalk Nmea Bridge, you can send speed information from your NMEA GPS to the SeaTalk Instrument. This makes adjustment accurate, easy, fast.

    These are just two verry simple examples. With the SeaTalk NMEA Bridge you will many functions and features that haven't been possible before.

    Additionally you get a repeater display that shows information from SeaTalk and from NMEA devices in one single display

    Additionally to the standard SeaTalk -> NMEA conversion, the bridge software offers a new - NMEA like - command $STALK.
    With the command $STALK,xx,yy,zz the PC can send any SeaTalk command you like. Your PC just sends a simple text string, and the bridge handels the spezial 9-bit protocoll, the collision detection and the electrical connection to the SeaTalk bus. ( Either with your own software or with a standard terminal programm )
    With this new command a normal pc or notebook can send any SeaTalk command and so it can control or manage SeaTalk devices. ( Example : Switch Illumination of SeaTalk instrument on/off, Change Display units from mph to knots and and and )
    This special function is also available the other way arround.
    The bridge can send every SeaTalk datagram as a $STALK,xx,yy,zz string to the PC.
    This simple text string can be read and computed by the pc and so we can read information from the SeaTalk Bus, that have no corresponding NMEA sentence. ( Example : see above )

    The bridge comes with a printed manual and USB drivers.

    More Information

    • A manual in PDF format can be loaded HERE
    • More information, updates and latest news can be found on our MyGadget project pages
    • Users comments and discussions can be found in our FORUM

    For developers, all source codes of the bridge software, compilers for the Atmel processor used on the bridge, and bootloader software is available.
    You can look at the software and change it to whatever you want.
    ( Programming knowledge in C for embedded proccessors is required )
    The protocol converter is a research project

    It is used for research on data communication, computer communication and data conversion with computers and instruments on board of boats.
    It must not be used as the main source for navigation information
    The user allways must to use charts and other conventional navigation aids.
    To make sure that the SeaTalk-NMEA-Bridge is what you need, please read the manual before ordering.
    A manual in PDF format can be loaded HERE

Items in stock : 8
This product was added to our catalog on Sunday 30 June, 2013.
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I forgot to tell you, what devices are connected. I have a ST 30 Wind Autohelm, and ST4000+, and also a Bidata ST40 Depth/Speed. Regards. Patrick

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Hi Frank, Thank's for answer! For the moment I could not do some test, because, I'm at home, and I will try to test, when I will be back on boat. The link is with me at home, and command $SNBSE,0,1 put the parameter to "1" . The response is OK. Before this parameter was to "0". I will contact you on my boat, but perhaps the next week. Regards. Patrick

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Hello Mauline, ok. Let's try to find out what's going on. You say, you never got any Seatalk data from the SeaTalk devices, but you can "talk" to the Link with CuteCom. That's the first problem we should solve. Could you tell me what kind of seatalk devices you have connected ? There should be SOME seatalk data, but it might be helpfull to know what you have connected. When you see NOTHING - well what comes to my mind first is - how is the SeaTalk Bus connected. I'm sure you did it correct, but maybe you could tell me which wire it connected to which terminal. Since you can talk to the link, you could switch ON the raw SeaTalk data output. That would show us if we receive anything from the SeaTalk Bus. Connect to the link with cutecom (or whatever you have on the PI) and type $xxx. Please make sure, that cutecom is set up to send CR and LF when you press ENTER. If the link replys with $xxx, we know the connection from the PI to the link is working. You could also try $SWVERSION if you like. Now type $SNBSE,0,1 and press enter. Now type $SNBSE,0 and press enter. The link should reply with $SNBSE, 0, 0.001 and from now on you should see $STALK sentences whenever seatalk data arrive. Regarding the raspberry is not connecting on bootup. This can not be caused by the software update. The USB->RS232 controller is a FTDI chip, that handels the USB connection all by itself. There is no software involved. Maybe you could reboot the PI, open a terminal and tell me what [code:1:f69a7f0ae1]dmesg | grep USB[/code:1:f69a7f0ae1] shows. This should tell you if PI has found the USB chip. You should see something like [code:1:f69a7f0ae1] usb 1-1.4: New USB device found, idVendor=0403, idProduct=6001 FTDI USB Serial Device converter detected[/code:1:f69a7f0ae1] Of course it could be a hardware problem with the SeaTalk Link itself. But please let's first try if we can solve the problem. If not, I just send you another link. No Problem. Best regards Frank

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After upgrade same problem!

In 1.69, I can't collect any data from Seatalk bus. The Seatalk NMEA link get a problem, because to dialog with it, I have to unplug and plug with power on. On normal startup or reboot it's not possible.... Why? I don't know. I'have try with my Raspberry and a PC whith Linux, it's the same thing. Could you give me,......if you read sometimes this forum, some help? Thank's a lot.

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Version 1.69

I just upgrade my link to 1.69 version. Now at reboot, Raspberry don't see the USB link. No answer from Cutecom. In have to unplug and plug again the usb stick(with power on) to access by Cutecom.... Strange. I'm not on the boat, so I can't see, if data arrive from Seatalk bus. But with 1.65 version, everything where OK at reboot!

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Rapsberry PI 3+Opencpn

I've tried to use the NMEA Link with my Seatalk instruments. I connect the NMEA link USB to my Raspberry PI 3 with Opencpn. I use Cutecom on /dev/ttyUSB0 to dialog with the usb link. Every thng is OK. $SWVERSION give me 1.65. All dialogs are OK but in the screen of Cutecom (as minicom or hyperterm), i never see sentences from Seatalk. If with Cutecom I open /dev/ttyUSB1 ( USB GPS), I can see all the data from gps.... I don't understand why I never see data from my Seatalk instruments. Of course I see nothing on Opencpn. Please, have you and idea. Perhaps power problem with the raspberry port usb, or a bad configuration of the link...? Thank's a lot for anwer. Patrick

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Honestly - I have no idea. I guess I simply would try to leave the depth transducer connected, disconnect the speed transducer and see what it shows when you send STW from the bridge. Not sure if it works though. Cheers Frank

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SOG ST60 tridata

Hi Frank, I want use the bridge to take the SOG from GPS and send it as STW to ST60 Tridata. From your post I've understood that in this case the ST60 must be set as slave, but, it's a tridata so I need it for the depth, Do you know if it can be slave only for the speed but not for depth? Thanks mg

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Vielen Dank, dass Sie sich darangesetzt haben! Leider läuft es auf meinem Raspy bisher nicht. Ich habe die Pakete qt4-dev-tools und qtcreator installiert und versuche die Datei auszuführen... Muss ich noch andere Pakete installieren? Gruß, Harm Meiners

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So - eine erste unstable Testversion ist compiliert und kann probiert werden [url=http://www.gadgetpool.de/nuke/modules.php?name=Downloads&d_op=viewdownloaddetails&lid=71]Multiplexer_stConfig_Tool_for_RaspberryPi_2[/url] im Downloadbereich. Gruss Frank Wallenwein

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