In here it used ATmega328 microcontroller. Materials and Methodsīasically to construct this device it is used ATmega 328 microcontroller, 4×3 number keypad, 16×2 character LCD module, vehicle center lock motor and power supply unit. Some features like adding new users and changing old password are configure by the keypad.LCD module is used to display messages to the user. It will give three attempts to enter the password when it is entered incorrectly at the first time. Using keypad it enters a password to the system and if it is entered correctly door is open by motor which is used to rotate the handle of the door lock.
This project has considered about that and created a secure access for a door which needs a password to open the door. In day to day life security of any object or place is plays a major role.
