Password Door Lock System Using Pic

This is also such an electronic locking system in which pic16f887a microcontroller plays the role of the central processing unit.

Password door lock system using pic. After that microcontroller compares these arrays values with already stored valued of a default password. 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 both the values are equal microcontroller opens the electronic lock. If password is incorrect it will halt user and beeps buzzer and decrements no of attempts by one.

Same logic is used to rotate motor anticlockwise. The pic microocntroller used in this electronic door locks project is pic18f4520. I need to multiple password system door lock. 2 or 3 different types of password.

If no of attempt is less then 0 it will block the user to enter password. Like main password guests password public password to open the door closed the door. Password based door lock using pic microcontroller https elektronicsgarage wordpress c. 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.

Here at89c52 microcontroller is used and it is an 8 bit controller. You can use any other pic microcontroller if you want. The mcu is interfaced with a 4 4 matrix keypad and a 16 2 lcd to form the user interface. If voltage fluctuates between minimum or maximum limit this device triggers the relay to isolate devices from main ac power supply.

We are widely familiar with the password based e locks and might have installed in our house. Electronic code lock system circuit design. This controller requires a supply voltage of 5v dc. You just need to change it in simulation and in code settings.

You can also use other pic microcontrollers like pic16f877a etc. And then its asks to close the door by pressing digit one. An electronic lock allows activation of an electric appliance only on entering the correct password.