Password Based Door Locking System Using 8051 Program

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

Password based door locking system using 8051 program.

Again if another person arrives it will ask to enter the password. 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. Video of the project. User can change this password anytime he she wish using a keypad.

If we want to use 16 keys then we need 16 pin for connection to 89s52 but in multiplexing technique we need to use only 8 pins for interfacing 16 keys. Password based door locking system. Predefined hard coded password is downloaded in the code. All the processing s will be done by 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. 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. We type the password using keypad which is attached with the system. 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. These techniques are an integration of mechanical and electronic devices and highly intelligent. In our diy digital lock system 8051 89c51 89c52 is our intelligent unit. The main concept behind this project is a door latch opening using a password entered through the keypad.

It is a simple embedded system with input from the keyboard and the output being actuated accordingly. User have to enter the code. Here at89c51 microcontroller is used and it is an 8 bit controller. In this circuit we have used multiplexing technique to interface keypad to the 8051 microcontroller for entering the password in the system.

Here we are using a 4x4 keypad which has 16 keys. Password based door lock circuit design uses five major components a microcontroller a relay a dc motor a 4 3 matrix keypad and a lcd.