OpenMarine MacArthur HAT

Note: If you are in or near the EU, we recommend to buy from OpenMarine who are located in Spain to save on shipping and customs fees. After a few years of developing software for OpenPlotter, OpenMarine has identified exactly what we need in terms of hardware to achieve our goals and the result is the MacArthur HAT (Hardware Attached on Top), an add-on board for Raspberry Pi 4 and Raspberry Pi 5 running OpenPlotter. With this HAT we want to get the fully open-source boat to free ourselves from dependence on big companies and make our boats more respectful with the environment. The main function of the MacArthur HAT is to be able to communicate with any old or new marine electronic device using the proprietary and closed protocols Seatalk1, NMEA 0183 or NMEA 2000 and the free and open protocol Signal K. This means that when an on-board device dies, we are not forced to buy another of the same brand, that uses the same technology or even uses the same protocol because we can mix differe