A catamaran owner has transformed his sailing experience by implementing a DIY navigation system powered by a Raspberry Pi. Tom, the owner of the SeaHorse, has integrated this single-board computer into his navigation desk, ensuring it remains safe from the destructive effects of saltwater. The device is securely housed in a waterproof box fitted with a silicone gasket, though this tight sealing does pose a challenge by causing the unit to overheat. To mitigate this, Tom has under-clocked the CPU, allowing it to run cooler while also conserving energy—an essential consideration during extended periods off the grid.
The navigation system employs a combination of repurposed technology, including a pair of outdated smartphones and a laptop screen, which collectively display crucial sailing data. With these devices, Tom can access weather forecasts, maps, GPS coordinates, and information on depth and speed over ground. All of this data is streamed through the boat’s WiFi network, providing him with comprehensive information at his fingertips.
Innovative Features Add Functionality
Tom’s project is far from finished. He is currently enhancing his system by integrating a software-defined radio into the Raspberry Pi. This addition will facilitate radio monitoring, expanding the system’s capabilities. Additionally, Tom is experimenting with reprogramming a buoy transmitter originally designed for tracking fishing nets. His goal is to adapt the device so that it can instead transmit the SeaHorse‘s location, speed, and heading.
The open-source navigational platform OpenCPN serves as the core software linking these various components. Known for its compatibility with third-party plugins, OpenCPN presents an ideal platform for Tom to experiment with innovative gadgets, such as the modified buoy transmitter. By leveraging this technology, he aims to create a more integrated and efficient navigation experience.
For those interested in similar projects, resources such as an open-source shipboard computer and an Arduino-driven buoy that gathers data are available. These initiatives illustrate the growing trend of leveraging technology for marine navigation, making sailing more accessible and enjoyable for enthusiasts.
Tom’s endeavors demonstrate how DIY solutions can enhance traditional practices, paving the way for future innovations in smart sailing technology. Thanks to Andrew Sheldon for sharing this inspiring story of ingenuity on the water.