Password Door Lock Using 8051

Here an at89c52 microcontroller is used and it is an 8 bit controller.

Password door lock using 8051.

If password does not match door remains closed and a message wrong password access denied is displayed on lcd. This controller requires a supply voltage of 5v dc. This circuit operates on the principle of microcontroller interfacing. The password which is entered is compared with the predefined password.

User have to enter the code. It is a simple embedded system with input from the keyboard and the output being actuated accordingly. Predefined hard coded password is downloaded in the code. To overcome this we design rfid password and otp based door lock system using 8051 microcontroller.

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. This is a simple password based door locking system circuit designed using 8051 microcontroller. These techniques are an integration of mechanical andelectronic devices and highly intelligent. 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.

Password based door lock system using8051 microcontrollertraditional lock systems using mechanical lock and key mechanism are being replaced by newadvanced techniques of locking system. We type the password using keypad which is attached with the system. A numeric password is hard coded in the 8051 microcontroller code. 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.

If the entered password is correct then the system opens the door by rotating door motor and displays the status of door on lcd. The main component in the circuit is 8051 controller. If the code matches the predefined hard coded code lock will open up and user can enter the room. Password based door lock system using 8051 microcontroller final report.

The password is stored in the eprom so that we can change it at any time. In this project 4 3 keypad is used to enter the password. Working of password based door locking system with 8051 when power supply is turned on a message enter your password is displayed on lcd. 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.

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.