In this video 🎥, we build a password-protected door lock system using Arduino, a 4×4 keypad, a 16×2 LCD with I2C adapter, and an SG90 servo motor. This DIY project demonstrates how to create a simple electronic lock where you can enter a password to unlock the door and press a button to lock it again 🔑.
💡 What you will learn in this video:
How to connect a 4×4 keypad and LCD screen to Arduino.
How to write Arduino code for password handling.
How to control a servo motor for mechanical door locking.
✨ Why this project is great for beginners:
Easy to build with basic Arduino components.
A fun way to learn about security systems.
Combines hardware, coding, and electronics in one practical project.
