Password Based Door Lock System Using 8051 Microcontroller Program Code

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Password based door lock system using 8051 microcontroller program code.

These techniques are an integration of mechanical and electronic devices and highly intelligent. The microcontroller has a program. 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. Electronic code lock system using 8051 microcontroller.

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. Again if another person arrives it will ask to enter the password. The entered password is compared with the predefined password.

Such an automatic lock system consists of electronic control assembly using rfid for authentication which controls the output load through a password and otp. 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. Wherein once the correct code or password. Here 4 4 keypad is used to enter the password.

A numeric password is hard coded in the 8051 microcontroller code. Working of password based door locking system with 8051 when power supply is turned on a message enter your password is displayed on lcd. 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 traditional lock systems using mechanical lock and key mechanism are being replaced by new advanced techniques of locking system.

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

If the code matches the predefined hard coded code lock will open up and user can enter the room. All the processing s will be done by 8051 microcontroller. We type the password using keypad which is attached with the system.