Digital Code Lock System

Digital code lock or digital combination lock is a type of digital locks where a combination of digits/characters or both are used for unlocking the lock. This project is about a simple digital code lock using Arduino. There are separate keys for locking and unlocking the system. The system can be unlocked by pressing the unlock button after entering the correct combination of digits. A matrix keypad is used as the input device.

Hardware requirements:

  • Arduino
  • Matrix Keypad
  • LCD Display
  • Locking System/Mechanism
  • Regulated Power Supply

Software requirements:

  • Arduino IDE 

Working procedure:

In our code, we defined a code that user can change any time. When the user put this code using the matrix keypad the system will unlock. The user can lock the system just pressing a button. The user can change password anytime with the keypad.

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