Abstract: To gain a deeper understanding of the principle of force balance, an experimental system for the stability control and data visualization of a rod was designed based on the balance principle and microcontroller technology. Through force analysis, the influence of gravity and inertia forces on the rod is accurately calculated, and the compensation force is determined, providing a theoretical basis for control algorithms. By employing advanced microcontroller technology and control algorithms, the system receives and processes sensor data in real time, quickly calculates the required compensation force, and controls the motor to apply appropriate torque to maintain the stability of the rod. The system visually displays the tilt angle and position data of the swing rod through an LCD screen, achieving real-time monitoring and data visualization of the status. Users can adjust control strategies in a timely manner. At the same time, a virtual oscilloscope is introduced to display the tilt angle data in the form of a curve, allowing users to observe the trend of tilt angle changes over time more intuitively and optimize the control algorithm parameters. This design improves system stability, response speed, and observability, providing insights for precise automatic control theory and teaching practice.