RFID Access control system with arduino | Arduino Tamil Tutorial

Code:-



//AccessControl.ino



#define Ready 13

#define Relay 12

#define Warning 8

char tag[] ="45003BEC7AE8"; // Replace with your Tag ID

char input[12];

int count = 0;

boolean match = 0;

char state = 0;

void setup()

{

Serial.begin(9600);

  pinMode(Ready,OUTPUT);

pinMode(Relay,OUTPUT);

pinMode(Warning,OUTPUT);

}

void loop()

{       

   digitalWrite(Ready,HIGH);

if(Serial.available())

{       

    digitalWrite(Ready,LOW);

count = 0;

while(Serial.available() && count < 12)

{

input[count] = Serial.read(); 

count++; 

delay(5);

}



if(count == 12) 

{

count =0; 

match = 1;

while(count<12 && match !=0) 

{

if(input[count]==tag[count])

match = 1; 

else

match= 0;

count++; 

}

}

if(match == 1) 

{

Serial.println("Congratulation Access Allowed");

digitalWrite(Relay,!state);

state=~state;

}

else

{

Serial.println("Access Denied");

digitalWrite(Warning,HIGH);

delay(1000);

digitalWrite(Warning,LOW);

}

for(count=0; count<12; count++)

{

input[count]= 'F';

}

count = 0;

}

}