Room temperature pervasive system.ino

#include <LiquidCrystal.h>
#include <Servo.h>

// About LCD
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

int Temp_Sensor_Pin = 0;
float Tmp_C;

// create servo object to control a servo
Servo myservo;  
// variable to store the servo position
int myServoPos = 0;    

int Red_LED = 8;
int Green_LED = 9;
int Bule_LED = 7;


float getTemperatureValue(int tmpPin)
{
  //Get a data from temperature Sensor
  float tmp = analogRead(tmpPin);

  // Convert the data into voltage and convert voltage to temperature(Celsius)
  float volt = tmp * (5000 / 1024.0);
  float tmp_C = (volt - 500) / 10;
  return tmp_C;
}

void setup() 
{

  //Servo Motor
  myservo.attach(10);
  // LED
  pinMode(Red_LED, OUTPUT); //Red
  pinMode(Green_LED, OUTPUT); //Green
  pinMode(Bule_LED, OUTPUT); //blue
  // LCD
  lcd.begin(16, 2);

  //Serial Monitor
  Serial.begin(9600);

}



void loop() 
{
  Tmp_C = getTemperatureValue(Temp_Sensor_Pin);
  lcd.setCursor(0, 0);
  lcd.print("Room Temperature: ");
  lcd.setCursor(0, 1);
  lcd.print(Tmp_C); 
  lcd.print(" 'C");
  
  Serial.print("Room Temperature : ");
  Serial.print(Tmp_C);
  Serial.println(" 'C");

  delay(1000);

  lcd.clear();
  
  if(Tmp_C < 25.0f)
  {
    lcd.setCursor(0, 0);
    lcd.print("Room is cold : ");
    lcd.setCursor(0, 1);
    lcd.print(Tmp_C, 1); 
    lcd.print(" 'C");
    

    
  }
  else if(Tmp_C > 27.0f)
  {
    lcd.setCursor(0, 0);
    lcd.print("Room is Hot : ");
    lcd.setCursor(0, 1);
    lcd.print(Tmp_C, 1); 
    lcd.print(" 'C");

  }
  else
  {
    lcd.setCursor(0, 0);
    lcd.print("Room is Normal : ");
    lcd.setCursor(0, 1);
    lcd.print(Tmp_C, 1); 
    lcd.print(" 'C");
     

  }
  // Room is cold
  // If the Room is cold, we need to turn off the fan.
  if( Tmp_C < 25.0f)
  {
    digitalWrite(Bule_LED, HIGH); 
    delay(3000); //  1000ms=1 sec
    digitalWrite(Bule_LED, LOW); 
    delay(200);
  }
  // Room is Hot
  // If the Room's temperature is high, we need to turn the fan on high. To decrease the room's temperature.
  else if(Tmp_C > 27.0f)
  {

    digitalWrite(Red_LED, HIGH); 
    delay(3000); //  1000ms=1 sec
    digitalWrite(Red_LED, LOW); 
    delay(200);

    for (myServoPos = 0; myServoPos <= 180; myServoPos += 1) 
    { 
   
      myservo.write(myServoPos);              
      delay(15);                     
    }
   for (myServoPos = 180; myServoPos >= 0; myServoPos -= 1) 
   { 
     myservo.write(myServoPos);              
     delay(15);        
   }
  }
  else // normal
  // If the Room's temperature is normal, we do not need to turn it on high. just turn it on mid.
  {
    digitalWrite(Green_LED, HIGH); 
    delay(3000); 
    digitalWrite(Green_LED, LOW); 
    delay(200);

    for (myServoPos = 0; myServoPos <= 60; myServoPos += 1) 
    { 
   
      myservo.write(myServoPos);              
      delay(15);                     
    }
   for (myServoPos = 60; myServoPos >= 0; myServoPos -= 1) 
   { 
     myservo.write(myServoPos);              
     delay(15);        
   }
  }

  lcd.clear();
 
}