Password Door Lock System Using 8051 Microcontroller

This controller requires a supply voltage of 5v dc.

Password door lock system using 8051 microcontroller.

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. Here an at89c52 microcontroller is used and it is an 8 bit controller. Attach your lock to port 3 pin 0. Keypad rows are attached to port 2 pins 0 1 2 3 and coulombs to pins 5 6 7.

If the person attempting to open the door enters a wrong password then the microcontroller switches the alarm for further course of action. These techniques are an integration of mechanical andelectronic devices and highly intelligent. To overcome this we design rfid password and otp based door lock system using 8051 microcontroller. Password based door lock system using 8051 microcontroller final report.

This is an advanced door opening system compared to the above system. 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. 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.

The password which is entered is compared with the predefined password. Other connections are for driving the 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. The main component in the circuit is 8051 controller.

4 3 keypad is attached to port 2 of 8051 microcontroller. 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. The password is stored in the eprom so that we can change it at any time. In this way a simple door lock system can be implemented with the use of a microcontroller.

If the entered password is correct then the system opens the door by rotating door motor and displays the status of door on lcd.