Electronic code lock with user defined password using microcontroller The major components include a keypad, LCD and the controller AT89C51 which . Here is a project called ‘Digital Code Lock using AT89C’. LCD is used for display and a keyboard is used to input the keys. This project source code is. Microcontroller Based Digital code Lock (AT89C) Security is a prime concern in our day-today life. Everyone wants to be as much secure as possible.

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The basic user lock is of 5 Digits and Master Lock is of 10 digits so its not easy for an intruder to break the lock unless you keep the code simple. You can make use of Solenoid lock. This password is stored in the system. Now if we want to track the keys in other columns like in col 2then we need to change the data at columns pins: Now suppose we give below data to column pins: A counter is set up using register R0 to count 5 times this will limit the user input collection to first 5 key presses.

After the four digits are entered, they are compared with the pre-set password.

Even now, there are Digital locks which can be operated using our smart phones, means no more need to keep different keys, just one smart phone can operate all the locks, this concept is based on Internet of Things. This Digital Door Lock — is simply a password based electronic code lock designed using micro controller, a keypad and a 12 volt dc relay. The important aspects and subroutines of the program are explained below. At89c201 electronic lock or digital lock is a device which has an electronic control assembly attached to it.


Digital Code Lock Project using Microcontroller

This time controller only waits for keys in column two: Check this article for LCD interfacing with and its functions. Electronic Identification and Personal Information card using Microcontroller. Insight – How Number Combination Lock works.

The method of column scanning is employed in identifying the pressed key. Login Please Enter Your Information.

Here we have used string.

Electronic code lock with user defined password using 8051 microcontroller (AT89C51)

Mon Dec 24 Register R1 is assigned address location D. I got the output on proteus did not connect the pull up resistors connected to lcd. Hi there, This is an interesting project. And likewise this principal goes for all another pins.

Please tell me, can I use hash function to check the parity bits in this project?

Digital Code lock using AT89C2051

Choosing Battery for Robots. The password is stored inside the program program memory. Vikshit, Check your keypad connections.


How can i generate the assembly language code ay89c2051 the code above given and using which software? Srikar, code is provided in the zip file.

The system collects 5 digit user input, compares the user input with the preset password inside program and if the user input and stored password matches, access will be granted by opening the door with the help of relay for a few seconds and closing it automatically after stipulated time.

Tue Dec 18 Each digit loaded to accumulator is then compared with the corresponding digit stored as user input in address locations 16D to D by loading them one by one to register R1.

Post in forum for further questions.

Sun Dec 23 After this, in main program we have initialize LCD and then coee read the input from Keypad using the keypad function and stores input keys into an array and then compare it from predefined array data using strncmp.

Heartbeat sensor with at89s Posted By sifirsekiz Wed Dec 19 The program was running very well on at89s If yes then how? Uxing Mishra Mon Oct 29 I want to register. Interface SD Card with Arduino.