Password Based Door Lock System Using 8051 Microcontroller Assembly Code

Itis a simple embedded system with input from the keyboard and the output being actuatedaccordingly.

Password based door lock system using 8051 microcontroller assembly code.

All the processing s will be done by 8051 microcontroller. This output loadcan be a motor or a lamp or any other mechanical electrical load. All the messages to input password access granted access denied will be popping up on 16 2 lcd on the right time. Electronic code lock using 8051 microcontorller.

If the code matches the predefined hard coded code lock will open up and user can enter the room. Security is a major concern in our day to day life and digital locks have become an important part of these security systems. 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. If password does not match door remains closed and a message wrong password access denied is displayed on lcd.

Here we develop an electroniccode lock system using 8051 microcontroller which provides control to the actuating the load. It s a digital door lock system based on 8051 controller accept password from user to open the door connected with dc motor. 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.

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. The goal of this project is how to make a password based digital door lock system for your home office university e t c. Predefined hard coded password is downloaded in the code. User have to enter the code.

We type the password using keypad which is attached with the system. A numeric password is hard coded in the 8051 microcontroller code. When power supply is turned on a message enter your password is displayed on lcd. 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.

Working of password based door locking system with 8051. Again if another person arrives it will ask to enter the password.