#include <Wire.h> 
#include <LiquidCrystal_I2C.h> // Library for LCD I2C
LiquidCrystal_I2C lcd(0x27,16,2); // Set the LCD I2C address and size
#include "DHT.h"
#define DHTPIN 10     // DHT PIN 12
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
DHT dht(DHTPIN, DHTTYPE);

#define trigPin 12 // Trigger pin of the HC-SR04
#define echoPin 11 // Echo pin of the HC-SR04
 
void setup() {
  lcd.init(); // Initialize the LCD screen
  lcd.backlight(); // Turn on the backlight
  pinMode(trigPin, OUTPUT); // Set the trigger pin as output
  pinMode(echoPin, INPUT); // Set the echo pin as input
  Serial.begin(9600);
  dht.begin();
}
 
void loop() {
  long duration, distance;
  digitalWrite(trigPin, LOW); // Set the trigger pin low for 2 microseconds
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH); // Set the trigger pin high for 10 microseconds
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH); // Measure the duration of the echo pulse
  distance = duration * 0.034 / 2; // Calculate the distance in cm
  lcd.setCursor(0,0); // Set the cursor to the first column of the first row
  lcd.print("Distance: "); // Print the label
  lcd.print(distance); // Print the distance value
  lcd.print(" cm"); // Print the units
  
  {delay(1000);
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
 
  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) ) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
 
  lcd.setCursor(0,1); // Set the cursor to the first column of the first row
  lcd.print("Temprature: "); // Print the label
  lcd.print(t); // Print the distance value
  lcd.print(" *C\t"); // Print the units
}
}