Password Based Door Locking System Using Arduino UNO in Proteus Simulation -

Password Based Door Locking System Using Arduino UNO in Proteus Simulation

In this article we will learn how to make password based door locking system using arduino UNO in proteus.
In the last post we will learn how to interfacing arduino UNO with 7 segment 4 digit display in proteus. You can visit our website,
I hope you appreciate my work, let’s discuss about today’s project.

Diagram of this project is below:

Password Based Door Locking System Using Arduino UNO in Proteus Simulation

Components which we use in this project are listed below:

Keypad-phone
LMO 16L
Servo motor (PWM)
Arduino UNO

Construction of password based door locking system using arduino UNO in proteus:

Connect the point 0 of arduino to the pin A of keypad
Connect the point 1 of arduino to the pin B of keypad
Connect the point 2 of arduino to the pin C of keypad
Connect the point 3 of arduino to the pin D of keypad
Connect the point 4 of arduino to the pin 1 of keypad
Connect the point 5 of arduino to the pin 2 of keypad
Connect the point 6 of arduino to the pin 3 of keypad
Connect the point 9 of arduino to the signal pin of servo motor
Connect the negative pin of servo motor to GND
Connect the positive pin of servo motor to +ve point
Connect A0 point of arduino to the point D7 of LCD display
Connect A1 point of arduino to the point D6 of LCD display
Connect A2 point of arduino to the point D5 of LCD display
Connect A3 point of arduino to the point D4 of LCD display
Connect A4 point of arduino to the point RS of LCD display
Connect A5 point of arduino to the point E of LCD display
Connect RW & VSS both points of LCD display to GND
Connect VDD point of LCD display to +ve

Working of password based door locking system using arduino UNO in proteus:

A password-based door locking system using arduino UNO involves combining hardware components with programming to create a secure control mechanism.

Applications of password based door locking system using arduino UNO in proteus:

Home security
Office access control
Hotel room access
Apartment buildings
Gated communities

Advantages of password based door locking system using arduino UNO in proteus:

Enhanced security
No physical keys
Flexibility
Remote management
Cost-effective

Program code:

#include <LiquidCrystal.h>

#include <Servo.h>

#include <Keypad.h>

Servo myservo;

int pos=0; // position of servo motor

LiquidCrystal lcd(A4, A5, A3, A2, A1, A0);

const byte rows=4;

const byte cols=3;

char key[rows][cols]={

{‘1′,’2′,’3’},

{‘4′,’5′,’6’},

{‘7′,’8′,’9’},

{‘*’,’0′,’#’}

};

byte rowPins[rows]={0,1,2,3};

byte colPins[cols]={4,5,6};

Keypad keypad= Keypad(makeKeymap(key),rowPins,colPins,rows,cols);

char* password=”0123″;

int currentposition=0;

void setup()

{

displayscreen();

//Serial.begin(9600);

myservo.attach(9); //Servo motor connection

lcd.begin(16,2);

}

void loop()

{

if( currentposition==0)

{

displayscreen();

}

int l ;

char code=keypad.getKey();

if(code!=NO_KEY)

{

lcd.clear();

lcd.setCursor(0,0);

lcd.print(“PASSWORD:”);

lcd.setCursor(7,1);

lcd.print(” “);

lcd.setCursor(7,1);

for(l=0;l<=currentposition;++l)

{

lcd.print(“*”);

//keypress();

}

if (code==password[currentposition])

{

++currentposition;

if(currentposition==4)

{

unlockdoor();

currentposition=0;

}

else

{

incorrect();

currentposition=0;

}

//—————— Function 1- OPEN THE DOOR————–//

void unlockdoor()

{

delay(900);

lcd.setCursor(0,0);

lcd.println(” “);

lcd.setCursor(1,0);

lcd.print(“Access Granted”);

lcd.setCursor(4,1);

lcd.println(“WELCOME!!”);

lcd.setCursor(15,1);

lcd.println(” “);

lcd.setCursor(16,1);

lcd.println(” “);

lcd.setCursor(14,1);

lcd.println(” “);

lcd.setCursor(13,1);

lcd.println(” “);

for(pos = 180; pos>=0; pos-=5) // open the door

{

myservo.write(pos);

delay(5);

}

delay(2000);

delay(1000);

counterbeep();

delay(1000);

for(pos = 0; pos <= 180; pos +=5) // close the door

{ // in steps of 1 degree

myservo.write(pos);

delay(15);

currentposition=0;

lcd.clear();

displayscreen();

}

//——————–Function 2- Wrong code————–//

void incorrect()

{

delay(500);

lcd.clear();

lcd.setCursor(1,0);

lcd.print(“CODE”);

lcd.setCursor(6,0);

lcd.print(“INCORRECT”);

lcd.setCursor(15,1);

lcd.println(” “);

lcd.setCursor(4,1);

lcd.println(“GET AWAY!!!”);

lcd.setCursor(13,1);

lcd.println(” “);

Serial.println(“CODE INCORRECT YOU ARE UNAUTHORIZED”);

delay(3000);

lcd.clear();

displayscreen();

}

//——-Function 3 – CLEAR THE SCREEN——————–/

void clearscreen()

{

lcd.setCursor(0,0);

lcd.println(” “);

lcd.setCursor(0,1);

lcd.println(” “);

lcd.setCursor(0,2);

lcd.println(” “);

lcd.setCursor(0,3);

lcd.println(” “);

}

//————Function 4 – DISPLAY FUNCTION——————–//

void displayscreen()

{

lcd.setCursor(0,0);

lcd.println(“ENTER THE CODE”);

lcd.setCursor(1 ,1);

lcd.println(“TO OPEN DOOR!!”);

}

//————–Function 5 – Count down——————//

void counterbeep()

{

delay(1200);

lcd.clear();

lcd.setCursor(2,15);

lcd.println(” “);

lcd.setCursor(2,14);

lcd.println(” “);

lcd.setCursor(2,0);

delay(200);

lcd.println(“GET IN WITHIN:::”);

lcd.setCursor(4,1);

lcd.print(“5”);

delay(200);

lcd.clear();

lcd.setCursor(2,0);