Password Door Lock Using 8051

We type the password using keypad which is attached with the system.

Password door lock using 8051.

In this project 4 3 keypad is used to enter the password. If the code matches the predefined hard coded code lock will open up and user can enter the room. This is a simple password based door locking system circuit designed using 8051 microcontroller. It provides control to the actuating the load.

The password is stored in the eprom so that we can change it at any time. The password which is entered is compared with the predefined password. The microcontroller based door locker is an access control system that allows only authorized person to access a restricted area the system is fully controlled by the 8 bit microcontroller 8051 which has a 2kbytes of rom for the program memory. Password based door lock system using 8051 microcontroller final report.

This controller requires a supply voltage of 5v dc. If password does not match door remains closed and a message wrong password access denied is displayed on lcd. Predefined hard coded password is downloaded in the code. A numeric password is hard coded in the 8051 microcontroller code.

If the entered password is correct then the system opens the door by rotating door motor and displays the status of door on lcd. Design and implementation of embedded password based security door lock system using 8051 microcontroller article pdf available october 2017 with 502 reads how we measure reads. All the processing s will be done by 8051 microcontroller. Password based door lock system using 8051 microcontroller circuit design uses five major components a microcontroller an l293d motor driver a dc motor a 4 4 matrix keypad and a 16 2 lcd.

The main component in the circuit is 8051 controller. It is a simple embedded system with input from the keyboard and the output being actuated accordingly. All the messages to input password access granted access denied will be popping up on 16 2 lcd on the right time. Password based door lock system using8051 microcontrollertraditional lock systems using mechanical lock and key mechanism are being replaced by newadvanced techniques of locking system.

Here an at89c52 microcontroller is used and it is an 8 bit controller. Password based door lock system using 8051 microcontroller is a simple project where a secure password will not enough to act as a door unlocking system since any body can use the password and open the door. This circuit operates on the principle of microcontroller interfacing. User have to enter the code.

Our digital code lock project is a simple electronic number lock system or an electronic combination lock using 8051 which has a preset 5 digit password stored inside the program the system collects 5 digit user input compares the user input with the preset password inside program and if the user input and stored password matches access will be granted by opening the door with the help of relay for a few seconds and closing it automatically after stipulated time.