#include <dht.h> //add the dht sensor library 
#include <LiquidCrystal_I2C.h> //add the i2c lcd library

#define sensorPin 8 //set digital pin 8 to the sensorPin
dht Sensor; //create an object named Sensor and connect it to the dht 
//create an object named display - connect it to the lcd library and set the parameters
//set the i2c address and the dimension - 16, 2
LiquidCrystal_I2C display(0x27,  16, 2); 

int led = 2; //assign pin 2 to the led variable
int buzzer = 3; //assign pin 3 to buzzer variable

void setup() {
  // put your setup code here, to run once:
  display.init(); //initiate the LCD
  display.clear(); //clear any display text
  display.backlight(); //turn on the backlight

  pinMode(led, OUTPUT); //set led as an output
  pinMode(buzzer, OUTPUT); //set buzzer as an output

}

void loop() {
  // put your main code here, to run repeatedly:
  int collect = Sensor.read22(sensorPin); //initiate collection of data from the sensor
  float temp = Sensor.temperature;//collect temp data
  float hum = Sensor.humidity;//collect humidity data

  if (temp > 30.0)
  {
    digitalWrite(led, HIGH);
    tone(buzzer, 2000);
    delay(100);
    noTone(buzzer);
    delay(100);
  }

  digitalWrite(led, LOW);
  noTone(buzzer);

  display.setCursor(0,0); //column 0, row 0 
  display.print("Temperature:"); //display this text
  display.setCursor(12, 0); //column 12, row 0
  display.print(temp); //display variable value

  display.setCursor(0,1); //column 0, row 1
  display.print("Humidity:"); //display this text
  display.setCursor(10, 1); //column 10, row 1
  display.print(hum); //display variable value

  delay(1000); //delay 1 sec
  display.clear(); //clear text

}