Smart Door Lock System

This is a password-based Smart Door Lock System that enhances home security while also adding an emergency safety feature.

💡 Key Features:
✅ 4×4 Keypad-based secure password entry
✅ Servo motor-controlled locking mechanism
✅ Buzzer alert for incorrect attempts
✅ Automatic unlock during gas leakage 🚨
✅ Real-time gas monitoring using MQ sensor

🔧 Technologies & Components Used:

•Arduino UNO
•4×4 Matrix Keypad
•Servo Motor (PWM based control)
•MQ Gas Sensor
•3-Pin Buzzer Module

🔎 Working Logic:
* Correct password → Door unlocks for 5 seconds
* Wrong password → Alarm beeps thrice
* Gas detected → Emergency unlock for safety

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Видео Smart Door Lock System канала Tech with Priya