A secure embedded system project that implements a password-protected door lock using an Arduino, 4×4 matrix keypad, 16×2 LCD, and a servo motor. The system provides real-time user feedback, limited ...

Abstract: This system presents the design and implementation of a password-based door lock system integrated with LED light control for enhanced security. The proposed system allows password entry ...

Here is the circuit diagram of Electronic code lock system using 8051 microcontroller. It is very useful at residential places to ensure better safety. This system demonstrates a circuit named ...