The Microcontroller and Internet of Things (IoT) Laboratory provides an applied framework for understanding embedded system design, digital interfacing, and networked control in mechatronic applications. This laboratory supports the theoretical foundations of microcontroller architecture and communication protocols through structured, project-based experimentation. Students gain proficiency in configuring and programming open-source platforms such as Arduino and ESP32, integrating sensors, actuators, and communication modules to construct functional embedded systems. Emphasis is placed on system reliability, real-time operation, and the role of IoT in data acquisition and distributed control. Upon completion, students are equipped with the analytical and practical skills necessary to design, implement, and evaluate intelligent cyber-physical systems aligned with modern industrial and research standards.