SeaTalk NG

Raymarine SeaTalk NG

Fig.: SeaTalk NG connection technology

With SeaTalk NG there is a more powerful successor to SeaTalk, which is based on the CAN bus and has limited compatibility with NMEA2000. With the fairly clear and color-coded connection technology of SeaTalk NG, Raymarine has managed to provide backwards compatibility with SeaTalk, which also supports older devices. The disadvantage, however, is the high price for the proprietary connection technology.… Continue reading

Raymarine SeaTalk

Fig.: SeaTalk connection technology

SeaTalk is a Raymarine proprietary serial network protocol developed in the 1980's and used for the transmission of navigation data and other information on boats. The data is transmitted as compact binary data. SeaTalk uses a single wire connection as the data line for serial data transmission, meaning they are both sent and received bit by bit over a single wire.… Continue reading


NMEA OneNet is a transmission method based on Ethernet. With NMEA OneNet, as the name suggests, an attempt is made to bundle a wide variety of transmission methods such as NMEA0183 and NMEA2000 in one protocol and thus maintain compatibility with old transmission methods. In addition, new protocols are added with which large amounts of data such as image and map transmission are also possible.

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Fig.: NMEA2000 connection technology (Busse yacht shop)

NMEA2000 (National Marine Electronics Association 2000) is a bus system for communication in boats. It was designed to provide a uniform interface for transferring data from electronic devices on boats.

operating principle

NMEA2000 is a bus system designed to transmit data between electronic devices on boats.… Continue reading


NMEA 0183 is a marine serial communications standard. It defines a format for the transmission of GPS information, speed and course data, and other navigation data between navigation devices and other electronic devices on boats.

Benefits of NMEA 0183:

  • Common: NMEA 0183 is a common standard supported by many legacy devices
  • Ease of implementation: It is easy to develop a device for NMEA 0183 as there are simple protocols and a well-documented specification.
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NMEA2000 for NASA / CLIPPER Duet sonar/log

First of all, a few important notes that you should definitely pay attention to.

Fig.: NASA/Clipper Duet Sonar/Log

This article is about how to convert a NASA/Clipper Duet echo sounder/log so that the device outputs NMEA2000 data. This document is based on the DIY project by Sönke and was supplemented with some additional information. The NASA/Clipper Duet echo sounder/log is actually a device without a bus connection and works independently with two separate sensors.… Continue reading

Anchor light automatic with Shelly 1

Fig. Shelly 1

Anyone who anchors is obliged to set an anchor light so that you can be recognized on the open water surface in the dark. Typically, the light is switched on manually at dusk and off again at sunrise. There is no problem switching it on. But often you forget to switch it off and the anchor light is then permanently on and consumes electricity unnecessarily.… Continue reading

Lilygo T-Watch 2020 with connection to SignalK

Fig. Lilygo T-Watch 2020 (Lilygo)


Jan Dytrych has started a software project to be able to display data from SignalK and receive alarms with a smart watch. Not just any common clock under Android is used as a smart watch. He uses the smart watch Liligo T Watch 2020. The special feature of this clock is that it has an ESP32 installed as a processor and can be controlled via the Arduino IDE or… Continue reading

Magnetix - a digital compass with NMEA2000


I've always found the idea of not only showing the course on my plotter when the boat is moving, but also when it's bobbing along quietly, I've always found it exciting.

After searching the I-Net for different manufacturers, it quickly became clear that I might not need an e-compass on board at current prices.… Continue reading