Password Door Lock System Using Pic

If both the values are equal microcontroller opens the electronic lock.

Password door lock system using pic.

After that microcontroller compares these arrays values with already stored valued of a default password. Like main password guests password public password to open the door closed the door. You just need to change it in simulation and in code settings. If voltage fluctuates between minimum or maximum limit this device triggers the relay to isolate devices from main ac power supply.

Electronic code lock system circuit design. This controller requires a supply voltage of 5v dc. Default password 1234 is stored in eeprom of pic microcontroller. 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.

You can also use other pic microcontrollers like pic16f877a etc. The pic microocntroller used in this electronic door locks project is pic18f4520. We are widely familiar with the password based e locks and might have installed in our house. If password is incorrect it will halt user and beeps buzzer and decrements no of attempts by one.

I need to multiple password system door lock. 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. You can use any other pic microcontroller if you want. Here at89c52 microcontroller is used and it is an 8 bit controller.

Password based door lock using pic microcontroller https elektronicsgarage wordpress c. 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. After taking inputs from a user these inputs are stored in array. This is also such an electronic locking system in which pic16f887a microcontroller plays the role of the central processing unit.

Same logic is used to rotate motor anticlockwise. If no of attempt is less then 0 it will block the user to enter password. And then its asks to close the door by pressing digit one.