Electronic Lock Circuit Using Microcontroller

555 timer electronic door lock.

Electronic lock circuit using microcontroller.

So we have described a circuit which uses commonly available switches and a alarm to protect your almirah and other important documents. Electronic lock using pic microcontroller circuit diagram. Before building our password door locking project first we need to collect the required components and then go ahead and follow the step by step building process. Here an at89c52 microcontroller is used and it is an 8 bit controller.

Arduino uno pro mini or custom board using atmega 328p microcontroller. Pic16f877a microcontroller reads these inputs and compared it with a already stored password. They are provided with an access control system. After taking inputs from a user.

If the entered password from keypad matches with this password then the lock opens and a message is displayed on lcd also an output pin is made high to be used for further. Digital code locks are very popular in electronics where you need to enter a particular code to open the lock. Default password 1234 is stored in eeprom of pic microcontroller. A 4 3 matrix keypad and a 16 2 lcd have been used here.

Circuit diagram of electronics lock is shown below. 16 x 2 lcd liquid. But today here we are building the code lock. Electronic lock takes inputs from the user with the help of 4x4 keypad.

Password based door lock system using 8051 microcontroller circuit design uses five major components a microcontroller an l293d motor driver a dc motor a 4 4 matrix keypad and a 16 2 lcd. Using codes for the purpose of a security has been the popular trend recently. A four digit predefined password is specified in the microcontroller at89c51 s program. This controller requires a supply voltage of 5v dc.

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A similar type of electronic project is presented right below called electronic code lock circuit which ensures the use of four digits in code locking process and these codes are keyed in remotely. This system allows the user to unlock the device with a password. Working of electronic lock. We have already built these kinds of digital locks using arduino using raspberry pi and using 8051 microcontroller.

An electronic lock or digital lock is a device which has an electronic control assembly attached to it.