Electronic Door Lock System Using 8051

Security is a major concern in our day to day life and digital locks have become an important part of these security systems.

Electronic door lock system using 8051.

Connect crystal with pins 18 and 19. 4 3 keypad is attached to port 2 of 8051 microcontroller. There are many types technologies available to secure our place like pir based security systems rfid based security system laser security alarms bio matrix systems etc. Password based door lock system using 8051 microcontroller circuit design uses five major components a microcontroller l293d motor driver a dc motor a 4ã 4 lcd are connected to p3 0 gnd and p3 2 pins respectively.

It is a simple embedded system with input from the keyboard and the output being actuated accordingly. Electronic code lock using 8051 microcontorller. Even now there are digital locks which can be operated using our smart phones means no more need to keep different keys just one smart phone can. Such an automatic lock system consists of electronic control assembly which controls the output load through a password.

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. Other connections are for driving the microcontroller. In this project keypad use as the input device and a 16 2 alphanumeric lcd use as the output device. In this project 4 3 keypad is used to enter the password.

The lock designing is explained after the door lock circuit diagram. Again if another person arrives it will ask to enter the password. When the user presses the keys of keypad then microcontroller read the value of the pressed key and display it on lcd. This output load can be a motor or a lamp or any other mechanical electrical load.

If you are interested to get detailed information about its design working and applications read the post electronic code lock system using 8051 microcontroller. Here i have created an electronic lock using the 8051 microcontrollers and 4 3 keypad. The main component in the circuit is 8051 controller. Password based digital door lock system using 8051 micro controller the goal of this project is how to make a password based digital door lock system for your home office university e t c the brain of this project is 8051 micro controller and relay is the heart of this project these are the two major component of this project.

This output load can be a motor or a lamp or any other mechanical electrical load. This system demonstrates a password based door lock system using 8051 microcontroller wherein once the correct code or password is entered the door is opened and the concerned person is allowed access to the secured area. Keypad rows are attached to port 2 pins 0 1 2 3 and coulombs to pins 5 6 7. Here we develop an electronic code lock system using 8051 microcontroller which provides control to the actuating the load.