Learn how to convert a DC motor into a custom servo motor using a Seeeduino XIAO and implement PID controllers in this comprehensive tutorial. Explore the process of building a large, powerful servo motor with precise positioning capabilities and customizable rotation range. Discover the internal workings of servo motors, understand the limitations of hobby servos, and gain hands-on experience in creating a cost-effective alternative. Follow along as the instructor demonstrates the design, setup, and programming of a custom servo motor, including input testing, endpoint configuration, and PID-based servo control. Acquire valuable skills in motor control, feedback systems, and microcontroller programming applicable to various robotics and automation projects.