Smart Door Lock System Using Arduino Uno

The demand for affordable and customizable security systems continues to grow as embedded microcontrollers become more accessible. This study explores the development of a Smart Door Lock System using Arduino Uno, implemented entirely in Tinkercad’s block-based programming environment. The system integrates a potentiometer acting as an analog password input, a 16×2 LCD for real-time feedback, an LED indicator for status signaling, and a servo motor as the primary locking mechanism. Results from three test scenarios̶valid input, invalid input, and user inactivity̶demonstrated consistent and accurate system performance. Findings highlight the educational value of analog-to-digital processing and conditional logic for early embedded systems learning, while identifying limitations and opportunities for future enhancement.

Arduino Uno; Smart Door Lock System; Tinkercad Simulation

1. Arduino. (2023). Arduino Uno technical specifications. [Google Scholar] [Crossref]

2. Autodesk. (2023). Introduction to Tinkercad circuits. Autodesk Education. [Google Scholar] [Crossref]

3. Mukherjee, S., & Roy, A. (2021). Microcontroller-based access control systems. International Journal of Embedded Systems, 14(3), 112‒120. [Google Scholar] [Crossref]

4. Perez, L. (2020). Simulation-based learning in embedded system design. Journal of Engineering Education, 45(2), [Google Scholar] [Crossref]

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