Password Based Door Lock System Using 8051 Microcontroller Assembly Code

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

Password based door lock system using 8051 microcontroller assembly code.

If password does not match door remains closed and a message wrong password access denied is displayed on lcd. 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. Predefined hard coded password is downloaded in the code. 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.

If the code matches the predefined hard coded code lock will open up and user can enter the room. Electronic code lock using 8051 microcontorller. 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.

The password is already saved on 8051 microcontroller memory a predefined password is db 49d 50d 51d 52d 53d 0 if we convert this in to decimal we will get 1 2 3 4 5 so this is our password when we enter this password with the help. It is a simple embedded system with input from the keyboard and the output being actuated accordingly. 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. Again if another person arrives it will ask to enter the password.

User have to enter the code. This output loadcan be a motor or a lamp or any other mechanical electrical load. A numeric password is hard coded in the 8051 microcontroller code. Working of password based door locking system with 8051.

All the processing s will be done by 8051 microcontroller. Itis a simple embedded system with input from the keyboard and the output being actuatedaccordingly. When power supply is turned on a message enter your password is displayed on lcd. It s a digital door lock system based on 8051 controller accept password from user to open the door connected with dc motor.

All the messages to input password access granted access denied will be popping up on 16 2 lcd on the right time. Here we develop an electroniccode lock system using 8051 microcontroller which provides control to the actuating the load.