Microcontroller-Based Door Locking System

This paper presents the design and development of a low-cost, microcontroller-based door locking system utilizing an Arduino Uno, a keypad for password input, an LCD for user feedback, and a servo motor to simulate a locking mechanism. The project serves as a practical exploration of fundamental concepts in embedded systems and access control. The system's architecture, hardware integration, and software implementation for password entry, verification, and actuation are detailed. Functional testing demonstrates the successful operation of the core components, highlighting the potential for keyless entry and basic security enhancement. The paper also discusses the system's limitations, including security vulnerabilities and the non-robust locking mechanism, and proposes avenues for future work such as enhanced security protocols, multi-user support, and integration with smart home systems. This work contributes to the understanding of basic electronic access control principles and the capabilities of low-cost microcontroller platforms in security applications.