Password Door Lock System Using Pic

Password based door lock using pic microcontroller https elektronicsgarage wordpress c.

Password door lock system using pic.

If password is incorrect it will halt user and beeps buzzer and decrements no of attempts by one. This controller requires a supply voltage of 5v dc. The pic microocntroller used in this electronic door locks project is pic18f4520. An electronic lock allows activation of an electric appliance only on entering the correct password.

I need to multiple password system door lock. The mcu is interfaced with a 4 4 matrix keypad and a 16 2 lcd to form the user interface. Same logic is used to rotate motor anticlockwise. Like main password guests password public password to open the door closed the door.

If voltage fluctuates between minimum or maximum limit this device triggers the relay to isolate devices from main ac power supply. If both the values are equal microcontroller opens the electronic lock. You just need to change it in simulation and in code settings. You can use any other pic microcontroller if you want.

2 or 3 different types of password. You can also use other pic microcontrollers like pic16f877a etc. And then its asks to close the door by pressing digit one. Electronic combination lock pic mircocontroller electronic code locking system is extremely useful in protecting our precious possessions and can be installed anywhere with bit of engineering in it.

If no of attempt is less then 0 it will block the user to enter password. We are widely familiar with the password based e locks and might have installed in our house. Smart under and overvoltage protection system using pic microcontroller this voltage protection system provides protection from under and over voltage of ac main power supply. After that microcontroller compares these arrays values with already stored valued of a default password.

This is also such an electronic locking system in which pic16f887a microcontroller plays the role of the central processing unit. Password based door locking system design uses five major components a microcontroller an l293d motor driver a dc motor a 4 4 matrix keypad and an lcd. After taking inputs from a user these inputs are stored in array.