Hardware Solutions·Digital Password Door Lock Project
Digital Password Door Lock
Embedded security system implementing a password-based digital door locking mechanism with keypad input and LED/buzzer feedback.
Lead Developer5 technologies
ArduinoEmbedded CServo MotorLCDKeypad
Project Overview
A digital password-based door locking system built with Arduino, a 4x4 keypad, and a servo motor. Users enter a PIN via keypad; correct entry triggers the servo to unlock, while incorrect attempts trigger a buzzer alarm. Features an LCD display for real-time user feedback.
Development Process
Challenges
Implementing secure password storage and reliable keypad debouncing in embedded firmware.
Solutions
Used EEPROM for persistent password storage and implemented software debouncing for reliable key detection.
Results & Impact
Fully functional hardware security prototype, demonstrating core embedded systems and electronics integration.
Key Features
4x4 matrix keypad input
Password verification and mismatch detection
Servo motor controlled door locking mechanism
LED and buzzer status feedback
Wrong-attempt lockout logic
LCD display for user prompts