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  • Raspberry Pi 4 32 GB SD Card With OpenPlotter, Signal K Installed

Raspberry Pi 4 32 GB SD Card With OpenPlotter, Signal K Installed

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The SanDisk Ultra 32 GB microSDHC Class 10 micro SD card comes with the Raspberry Pi OS pre-installed plus OpenPotter / Signal K installed for use with the Raspberry Pi 4 and the PiCAN-M NMEA 0183 & NMEA 2000 HAT.


  • OpenCPN
  • Signal K
  • I2C Sensors
  • NMEA 2000
  • NMEA 0183
The CAN Bus driver is configured at 250kbps for use with NMEA 2000. The RS422 is configured for NMEA 0183 input for use with OpenCPN.
The BME280 is configured for use with Signal K at address 0x76.
Signal K
OpenCPN Chart Plotter Navigation

Additional Resources

Signal K Setup

To setup Signal K it is best to use the Openplotter package; it can be downloaded at:


OpenCPN (Open Chart Plotter Navigator) is a free software project to create a concise chart plotter and navigation software for use underway or as a planning tool. OpenCPN is developed by a team of active sailors using real-world conditions for program testing and refinement. OpenCPN uses GPS input data to determine the ship's position and data from an AIS receiver to plot the positions of ships in the neighborhood. More Information...


OpenPlotter is a combination of software and hardware to be used as a navigational aid on small and medium boats. It is also a complete home automation system onboard. It works on ARM computers like the Raspberry Pi or any computer running a Linux Debian derivative. It is low-cost, low-consumption, and modular. You will need the basic parts and some optional parts. It will depend on what kind of data you want to collect, process, display, and what type of equipment your boat already has. More Information...

Signal K

Signal K is a modern and open data format for marine use. Built on standard web technologies, including JSON, WebSockets, and HTTP, Signal K provides a method for sharing information in a way that is friendly to WiFi, cellphones, tablets, and the Internet. A format available to everyone, where anyone can contribute, Signal K is the first truly open data format for the marine industry. It is set to revolutionize how we consume and interact with data on boats. Signal K is open source, but friendly to companies that want to use it in closed source applications or hardware. More Information...


CANBoat represents a suite of command-line driven programs that work with a boat's NMEA 2000 (CAN Bus) networks. The NMEA 2000 database and implementation are copyrighted by the NMEA (National Marine Electronics Association). Access is restricted to members and parties that pay for it. If they do so, they cannot divulge the content of the database, thus making it impossible for open-source developers to get access to it. For this reason, engineers have reverse-engineered the NMEA 2000 database through network observation and assembling data from public sources. Since they are reverse-engineering, they can also include company-specific PGNs from companies such as Navico, Airmar, Garmin, Raymarine, and Furuno. More Information...

Advanced Marine Electrics and Electronics Troubleshooting: A Manual for Boatowners and Marine TechniciansAdvanced Marine Electrics and Electronics Troubleshooting

Whether you are a marine electronics professional or a boat owner, Advanced Marine Electrics and Electronics Troubleshooting helps you understand the new, more powerful methods of troubleshooting marine electrical and electronic systems.

A modern boat’s sophisticated installations and networked electronics can stretch the traditional diagnostic methods based on trouble lights and multimeters past their useful limits. 

This book will show you how to:

  • Use microprocessor-based diagnostic tools and techniques from the automotive and communications sectors, adapted for boats for the first time
  • Diagnose the most difficult AC and DC problems
  • Protect communications and navigation electronics from interference and lightning
  • Seek out and eliminate stray-current sources and galvanic corrosion

More Information...

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