Explore the challenges and solutions in designing a custom millisecond-accurate timing system for motorsport events using open-source software and tools. Learn about the unique requirements, including remote timing points, difficult terrain, quick setup, and integrated safety systems. Discover how Beaglebones, custom hardware capes, and software interfaces were utilized to create a cost-effective alternative to expensive off-the-shelf solutions. Delve into the technical aspects involving Python, C, MQTT, wide area networking, and distributed time synchronization. Gain insights into the system architecture, hardware design iterations, software development challenges, and real-world performance in high-speed racing environments.