sourcecode

//include the RFID libs
#include <SPI.h>
#include <MFRC522.h>
 
//include the LCD lib
#include <LiquidCrystal.h>
 
 //declear the reset and SDA pins of RFID
#define SS_PIN 10
#define RST_PIN 9
 
// Create MFRC522 instance.
MFRC522 mfrc522(SS_PIN, RST_PIN);   // Create MFRC522 instance.
//declear what LCD pins u are sending data
LiquidCrystal lcd(3, 2, 6, 4, 7, 5);
 
 
 
String pass1 = "CHIBUEZE";
String acct1 = "6A 2D 67 07";
String pass2 = "SMART";
String acct2 = "77 1F 73 63";
int balance1 = 1000;
int balance2 = 1000;
int rate = 200;
 
 
void setup() 
{
  Serial.begin(9600);
  // Initiate  SPI bus  
  SPI.begin();
  // Initiate MFRC522      
  mfrc522.PCD_Init();
  //begin the LCD
  lcd.begin(16, 4);
  //state your actuator pins 
  pinMode(A0, OUTPUT);
  pinMode(A1, OUTPUT);
  pinMode(A2, OUTPUT);
   
//display a welcome note
  lcd.setCursor(0, 0);
  lcd.print("WELCOME CHIBUEZE ");
  delay(4000);
  lcd.setCursor(0, 0);
  lcd.print("   BUS TICKET       ");
    lcd.setCursor(0, 1);
  lcd.print(" PAYMENT SYSTEM  ");
  delay(2000);
    lcd.clear();
 
    //mfrc522.PCD_Init(); // Init MFRC522 
    lcd.setCursor(0, 2);
  lcd.print("                                  ");
  lcd.setCursor(0, 3);
  lcd.print("                                  ");
   
}
 
void unregisted(){
   tone(A0, 1000);
delay(500);
noTone(A0);
delay(500);
 
tone(A0, 1000);
delay(500);
noTone(A0);
delay(500);
 
tone(A0, 1000);
delay(500);
noTone(A0);
delay(500);
   
  lcd.setCursor(0, 0);
              lcd.print(" UNREGISTERED              "); 
              delay(2000);
              lcd.setCursor(0, 1);
              lcd.print("PLS GET A VALID CARD");
                             
                  for (int positionCounter = 0; positionCounter < 43; positionCounter++) {
    // scroll one position left:
    lcd.scrollDisplayLeft();
         // wait a bit:
    delay(150);
  }
  
  //lcd.clear();
}
 
void loop() { 
  //turn off the actuators
  digitalWrite(A0, LOW);
  analogWrite(A1, 0);
  analogWrite(A2, 0);
   
    lcd.setCursor(0, 0);
  lcd.print("Bus Fare is #");
  lcd.println(rate);
  lcd.println("     ");
  lcd.setCursor(0, 1);
  lcd.print("  Swipe To Pay     ");
   
   
    // Look for new cards  
  if ( ! mfrc522.PICC_IsNewCardPresent()) 
  {
    return;
  }
  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial()) 
  {
    return;
  }
  //Show UID on serial monitor
  Serial.print("UID tag :");
  String content= "";
  byte letter;
  for (byte i = 0; i < mfrc522.uid.size; i++) 
  {
     
     Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
     Serial.print(mfrc522.uid.uidByte[i], HEX);
     content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
     content.concat(String(mfrc522.uid.uidByte[i], HEX));
  }
  Serial.println();
  Serial.print("Message : ");
  content.toUpperCase();
  //this is where u put the UID of the card that you want to give access
     if (content.substring(1) == "6A 2D 67 07") {
      analogWrite(A2, 255);
        delay(250);
        analogWrite(A2, 0);
         delay(250);
        analogWrite(A2, 255); 
          if (balance1 >= rate){
              balance1 -= rate;
 
              
         
              lcd.setCursor(0, 0);
              lcd.print("   Hi CHIBUEZE   ");
              lcd.setCursor(0, 1);
              lcd.print("___Payment O.K___      ");
               
             }
             else{
              lcd.setCursor(0, 0);
              lcd.print(" Sorry CHIBUEZE   ");
              lcd.setCursor(0, 1);
              lcd.print("Insuficient Fund");
              
               }
              delay(4000);
              lcd.setCursor(0, 1);
              lcd.print("_Balance is #"); 
              lcd.println(balance1);
              lcd.println(".      .");
              delay(4000);
             return;
            }
 
             
     if (content.substring(1) == "77 1F 73 63") {
      analogWrite(A2, 255);
        delay(250);
        analogWrite(A2, 0);
         delay(250);
        analogWrite(A2, 255); 
         
          if (balance2 >= rate){
              balance2 -= rate;
              lcd.setCursor(0, 0);
              lcd.print("     Hi SMART     ");
              lcd.setCursor(0, 1);
              lcd.print("___Payment O.K___      ");
               }
              else{
              lcd.setCursor(0, 0);
              lcd.print("   Sorry SMART   ");
              lcd.setCursor(0, 1);
              lcd.print("Insuficient Fund");
               }
              delay(4000);
              lcd.setCursor(0, 1);
              lcd.print("_Balance is #"); 
              lcd.println(balance2);
              lcd.println(".      .");
              delay(4000);
             return;
            }
       else{
        lcd.clear();
        analogWrite(A1, 255);
        delay(250);
        analogWrite(A1, 0);
         delay(250);
        analogWrite(A1, 255); 
       unregisted();
         
         
          
       }
       lcd.clear();
             }