• Raspberry Pi (3B+ or 4 recommended)
• MacArthur HAT
• NMEA 2000 to USB adapter (e.g., Actisense NGT-1)
• MicroSD card (16GB or larger)
• Power supply for Raspberry Pi
• Ethernet cable or Wi-Fi connection

1. Download and install the latest Raspberry Pi OS (previously called Raspbian) on your MicroSD card.
2. Insert the MicroSD card into the Raspberry Pi.
3. Connect the Raspberry Pi to your network via Ethernet or Wi-Fi.
4. Power on the Raspberry Pi.

1. Power off the Raspberry Pi.
2. Carefully attach the MacArthur HAT to the GPIO pins on the Raspberry Pi.
3. Secure the HAT with standoffs if provided.

1. Power on the Raspberry Pi and open a terminal.
2. Run sudo raspi-config.
3. Navigate to “Interfacing Options” > “I2C” and enable it.
4. Reboot the Raspberry Pi: sudo reboot.

1. Update your system:

sudo apt update
sudo apt upgrade -y

1. Install necessary packages:

sudo apt install -y git cmake build-essential libgps-dev gpsd gpsd-clients python3-pip

1. Install the MacArthur HAT Python library:

sudo pip3 install macarthur-hat

1. Create a new Python script to test the HAT:

nano ~/test_macarthur.py

1. Add the following content:

from macarthur_hat import MacArthurHAT
import time
 
hat = MacArthurHAT()
while True:
    print(hat.read_all())
    time.sleep(1)

1. Run the script to test the HAT:

python3 ~/test_macarthur.py

1. Connect your NMEA 2000 to USB adapter to the Raspberry Pi.

1. Install the NMEA 2000 library:

sudo pip3 install pycanboat

1. Create a new Python script for NMEA 2000 data:

nano ~/nmea2000_reader.py

1. Add the following content:

import can
from pycanboat import PGNs
 
bus = can.interface.Bus(channel='can0', bustype='socketcan')
pgns = PGNs()
 
for msg in bus:
    decoded = pgns.decode(msg)
    if decoded:
        print(decoded)

1. Run the script to test NMEA 2000 data reception:

python3 ~/nmea2000_reader.py

1. Install Node.js and npm:

curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -
sudo apt install -y nodejs

1. Install Signal K:

sudo npm install -g signalk-server

1. Create a new Signal K configuration:

signalk-server-setup

1. Start the Signal K server:

signalk-server