SourceCode_Arduino.ino

#include "DHT.h"               // header for DHT11 sensor
#include <SPI.h>               // header for RFID
#include <MFRC522.h>           // header for RFID
#include <Servo.h>             // header for servo motor
#include <LiquidCrystal_I2C.h> // header for the LCD display
#include <Wire.h>
#define DHTPIN 2
#define DHTTYPE DHT11
#define SS_PIN 53
#define RST_PIN 5
#define LED_Blind 8
#define LED_other 9
const int trigPin = 12;
const int echoPin = 13;
const int LED1 = A0;
const int LED2 = A1;
const int LED3 = A2;
const int LED4 = A3;
const int LED5 = A4;

int duration = 0; // initial duration for the motion sensor
int distance = 0; // initial distance for the motion sensor (in cm)

int led = A2;
DHT dht(DHTPIN, DHTTYPE);

MFRC522 mfrc522(SS_PIN, RST_PIN);   // Create MFRC522 instances
LiquidCrystal_I2C lcd(0x3F, 16, 2); // config for the LCD display

// define servo name
Servo myServo1;
Servo myServo2;
Servo myServo3;

/* Database of RFID's */
String open = "E3 57 F3 2E";
String uid1 = "D3 5C 2B 2E";
String uid2 = "E3 6D 11 2E";
String uid3 = "72 FB 4B 1A";
String close = "40 97 DB 1D";

void setup()
{
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);

  Serial.begin(9600);
  pinMode(led, OUTPUT);
  dht.begin();
  lcd.begin();
  lcd.clear();
  lcd.backlight();

  Serial.begin(9600); // Initiate a serial communication
  SPI.begin();        // Initiate  SPI bus
  mfrc522.PCD_Init(); // Initiate MFRC522
  myServo1.attach(3);
  myServo2.attach(6);
  myServo3.attach(11);

  myServo1.write(90);
  myServo2.write(0);
  myServo3.write(0); // servo start position
  pinMode(LED4, OUTPUT);
  pinMode(LED5, OUTPUT);
  pinMode(LED_Blind, OUTPUT);
  pinMode(LED_other, OUTPUT);

  Serial.println("Hold your RFID Card/Tag in front of the scanner!");
  Serial.println();
}

void loop()
{
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH); // duration for the motion sensor (Ultrasonic Sonar Sensor)
  distance = duration / 58.2;

  if (distance <= 8)
  {
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, HIGH);
    Serial.println("There is a shortage of product in the container!");
  }
  else
  {
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, LOW);
  }

  delay(2000);
  // read humidity
  float humi = dht.readHumidity();
  // read temperature as Celsius
  float tempC = dht.readTemperature();
  // read temperature as Fahrenheit
  float tempF = dht.readTemperature(true);

  // check if any reads failed
  if (isnan(humi) || isnan(tempC) || isnan(tempF))
  {
    Serial.println("Failed to read from the DHT sensor!");
  }
  else
  {
    if (tempC < 27.50)
    {
      digitalWrite(led, HIGH);
      Serial.println(tempC);
    }
    else
    {
      digitalWrite(led, LOW);
      Serial.println(tempC);
    }
  }

  lcd.clear();
  lcd.setCursor(1, 0);
  lcd.print("Welcome!");
  lcd.setCursor(0, 1);
  lcd.print("Scan Your ID...");

  if (!mfrc522.PICC_IsNewCardPresent())
  {
    return;
  }

  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));
  }

  lcd.clear();
  Serial.println();
  Serial.print("Message : ");
  content.toUpperCase();

  if (content.substring(1) == open) // change here the UID of the card/cards that you want to give access
  {

    myServo3.write(90);
    delay(1000);
  }
  else if (content.substring(1) == close) // change here the UID of the card/cards that you want to give access
  {

    myServo3.write(0);
    delay(1000);
  }
  else if (content.substring(1) == uid1) // change here the UID of the card/cards that you want to give access
  {
    Serial.println("Authorized access");
    Serial.println();
    delay(500);
    digitalWrite(LED4, HIGH);
    lcd.setCursor(0, 0);
    lcd.print("Tag 01");
    lcd.setCursor(0, 1);
    lcd.print("Authorized access");
    delay(3000);
    lcd.clear();
    myServo2.write(30);
    delay(1000);
    myServo1.write(35);
    delay(1000);
    myServo1.write(90);
    delay(1000);
    myServo2.write(0);
    delay(1000);
    digitalWrite(LED4, LOW);
  }
  else if (content.substring(1) == uid2) // change here the UID of the card/cards that you want to give access
  {
    Serial.println("Authorized access");
    Serial.println();
    digitalWrite(LED_Blind, HIGH);
    delay(500);
    digitalWrite(LED4, HIGH);
    lcd.setCursor(0, 0);
    lcd.print("Tag 02");
    lcd.setCursor(0, 1);
    lcd.print("Authorized access");
    delay(3000);
    lcd.clear();
    myServo2.write(30);
    delay(1000);
    myServo1.write(35);
    delay(1000);
    myServo1.write(90);
    delay(1000);
    myServo2.write(0);
    digitalWrite(LED_Blind, LOW);
    delay(1000);
    digitalWrite(LED4, LOW);
  }
  else if (content.substring(1) == uid3) // change here the UID of the card/cards that you want to give access
  {
    Serial.println("Authorized access");
    Serial.println();
    digitalWrite(LED_other, HIGH);
    delay(500);
    digitalWrite(LED4, HIGH);
    lcd.setCursor(0, 0);
    lcd.print("Tag 03");
    lcd.setCursor(0, 1);
    lcd.print("Authorized access");
    delay(3000);
    lcd.clear();
    myServo2.write(30);
    delay(1000);
    myServo1.write(35);
    delay(1000);
    myServo1.write(90);
    delay(1000);
    myServo2.write(0);
    digitalWrite(LED_other, LOW);
    delay(1000);
    digitalWrite(LED4, LOW);
  }
  else
  {
    Serial.println(" Access Denied");
    Serial.println();
    digitalWrite(LED5, HIGH);
    lcd.setCursor(0, 0);
    lcd.print("Unknown");
    lcd.setCursor(0, 1);
    lcd.print("Access Denied");
    delay(3000);
    digitalWrite(LED5, LOW);
    lcd.clear();
  }
}