#include #include
int hall_sensor = 3;
int state,lockread;
int Buzzer = 4;
const int LockPin = 2;
#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
void setup()
{
Serial.begin(9600); // Initiate a serial communication
pinMode(LockPin, OUTPUT);
pinMode(Buzzer, OUTPUT);
pinMode(hall_sensor, INPUT);
SPI.begin(); // Initiate SPI bus
mfrc522.PCD_Init(); // Initiate MFRC522
//Serial.println("Approximate your card to the reader...");
// Serial.println();
digitalWrite(LockPin, LOW);
}
void readsensor()
{
lockread = digitalRead(LockPin);
state = digitalRead(hall_sensor);
//Serial.print(lockread);
//Serial.print(state);
// delay(2000);
}
void loop()
{
readsensor();
sensor();
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent())
{
return;
}
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial())
{
return;
}
//Show UID on serial monitor
String content= "";
byte letter;
for (byte i = 0; i < mfrc522.uid.size; i++)
{
content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
content.concat(String(mfrc522.uid.uidByte[i], HEX));
}
//Serial.println();
//Serial.print("Message : ");
content.toUpperCase();
if (content.substring(1) == "60 4E 07 1E" ) //change here the UID of the card/cards that you want to give access
{
digitalWrite(LockPin, HIGH);
Serial.print("Door Unlocked");
digitalWrite(Buzzer, HIGH);
delay(2000);
digitalWrite(Buzzer, LOW);
sensor();
}
else
{
Serial.println("You are not Authorised");
digitalWrite(Buzzer, HIGH);
delay(2000);
digitalWrite(Buzzer, LOW);
}
}
void sensor()
{
readsensor();
if (lockread == HIGH){
readsensor();
if(state==LOW){
digitalWrite(LockPin, LOW);
Serial.print("Door Closed");
digitalWrite(Buzzer, HIGH);
delay(2000);
digitalWrite(Buzzer, LOW);
}
}
}