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Author: Shelltroecnec

_Project- RFID Based Student Attendance System with Data Logging/Project_12_RFID_Attendance_system_with_data_logging.ino

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+
+//*LCD INITIALIZATION*//
+#include <LiquidCrystal.h>
+const int rs=47,rw=46, en=45, d0=44, d1=43, d2=42, d3=41, d4 = 40, d5 = 39, d6 = 38, d7 = 37;
+LiquidCrystal lcd(rs, rw,en,d0,d1,d2,d3, d4, d5, d6, d7);
+
+int j=0;
+int i=0;
+int buzzer=31;
+int LED1=22;
+
+//*RFID INITIALIZATION*//
+char b[12];
+char Rahul[12]={'0','8','0','0','F','0','5','4','B','2','1','E'};
+char Reshma[12]={'0','8','0','0','C','7','9','8','0','4','5','3'};
+int count=0;
+
+//*MOTOR INITIALIZATION*//
+int Motor1=33;
+int Motor2=34;
+
+void setup() {
+ lcd.begin(16,2); //SELECTING LCD COLUMNS & ROWS
+ Serial.begin(9600);//INITALIZING SERIAL COMMUNICATION
+ Serial2.begin(9600);//INITALIZING BLUETOOTH SERIAL COMMUNICATION
+ Serial3.begin(9600); //INITALIZING RFID SERIAL COMMUNICATION
+ pinMode(Motor1,OUTPUT); //DIFINING MOTOR1 AS OUTPUT DEVICE
+ pinMode(Motor2,OUTPUT); //DIFINING MOTOR2 AS OUTPUT DEVICE
+ pinMode(LED1,OUTPUT); //DIFINING LED1 AS OUTPUT DEVICE
+ pinMode(buzzer,OUTPUT); //DIFINING BUZZER AS OUTPUT DEVICE
+ digitalWrite(LED1,HIGH); //INITIALIZING LED1 OFF
+ digitalWrite(Motor1,LOW); //INITIALIZING MOTOR1 OFF
+ digitalWrite(Motor2,LOW); //INITIALIZING MOTOR2 OFF
+ Serial.println("CLEARDATA");
+ Serial.println("LABEL,Time,Date,Student Name,");
+ Serial.println("RESTTIMER");
+ while(j!=5){
+ lcd.noDisplay(); 
+ delay(500);
+ lcd.display();
+ delay(500);
+ lcd.print("!! ATTENDANCE !!");
+ lcd.setCursor(0,1);
+ lcd.print("! SCAN YOUR CARD !");
+ j++;
+ }}
+  
+void loop() {
+   
+   if (Serial3.available()){  //IF RFID TAG IS AVAILABLE TO SCAN  
+  b[count]=Serial3.read();    //SCAN THE TAG AND STORE THE VALUE IN ARRAY 'b'
+  count++;
+  }
+  if(count==12)       //IF SCANNED ARRAY VALUE IS OF 12 DIGITS ENTER IN THE LOOP
+  {
+  if(strncmp(b,Rahul,12) ==0)  //COMPARING STRING BETWWEN STORED AND SCANNED VALUE 
+  {
+  lcd.clear();   //MAKING LCD CLEAR FOR PRINTING
+  lcd.write("Access Granted"); //LCD OUTPUT
+  delay(500);
+  digitalWrite(LED1,LOW);   //LED1 ON
+  digitalWrite(buzzer,HIGH);  //BUZZER ON
+  delay(500);
+  digitalWrite(LED1,HIGH);  //LED1 OFF
+  digitalWrite(buzzer,LOW); //BUZZER OFF
+  Serial.println("DATA,TIME,DATE,Rahul,");
+  Serial.println(b[count]);
+  delay(1000);
+  Serial2.println("RAHUL PRESENT");  //PRINTING OUTPUT ON BLUETOOTH TERMINAL THROUGH BLUETOOTH 
+  lcd.clear();
+  lcd.write("WELCOME RAHUL");
+  delay(500);
+  digitalWrite(Motor1,HIGH); //MOTOR1 ON
+  delay(1000);
+  digitalWrite(Motor1,LOW); //MOTOR1 OFF
+  count=0;}
+  
+  else if (strncmp(b,Reshma,12)==0) //COMPARING STRING BETWWEN STORED AND SCANNED VALUE
+  { 
+    lcd.clear();   //MAKING LCD CLEAR FOR PRINTING
+  lcd.write("Access Granted"); //LCD OUTPUT
+  delay(500);
+  digitalWrite(LED1,LOW);   //LED1 ON
+  digitalWrite(buzzer,HIGH);  //BUZZER ON
+  delay(500);
+  digitalWrite(LED1,HIGH);  //LED1 OFF
+  digitalWrite(buzzer,LOW); //BUZZER OFF
+  Serial.println("DATA,TIME,DATE,Reshma,");
+  delay(1000);
+  Serial2.println("RESHMA PRESENT");  //PRINTING OUTPUT ON BLUETOOTH TERMINAL THROUGH BLUETOOTH 
+  lcd.clear();
+  lcd.write("WELCOME RESHMA");
+  digitalWrite(Motor1,HIGH); //MOTOR1 ON
+  delay(1000);
+  digitalWrite(Motor1,LOW); //MOTOR1 OFF
+  count=0;
+  }else
+  {lcd.clear();
+  lcd.write("Access Denied"); //IF TAG READ VALUE IS MISMATCH, PRINT THIS ON LCD
+count=0;}
+  count=0;}} //RESETTING THE COUNT=0 FOR THE NEXT SCAN & STORE