#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <dht.h> //include dht11 library
dht DHT;

#define DHT11_PIN 7

int moisturePin = A0;
int ldrPin = A1;
int relayPin = 8;

// Initialize the LCD object
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup()
{
  // Initialize the LCD display
  lcd.init();
  lcd.backlight();

  Serial.begin(9600);
  pinMode(moisturePin, INPUT);
  pinMode(ldrPin, INPUT);
  pinMode(relayPin, OUTPUT);
}

void loop()
{
  int moistureValue = analogRead(moisturePin);
  int ldrValue = analogRead(ldrPin);
  DHT.read11(DHT11_PIN);
  
  lcd.setCursor(0,0);
  lcd.print("SM:");
  lcd.println(moistureValue);
  Serial.print(moistureValue);
  Serial.println("\n");  
  lcd.print(" ");
  lcd.print("L:");
  lcd.print(ldrValue);
  Serial.println(ldrValue);
  Serial.println("\n");    
  lcd.setCursor(0,1);
  lcd.print("T:");
  lcd.print(DHT.temperature);
  lcd.print(" ");
  Serial.println("\n");
  Serial.println(DHT.temperature);    
  lcd.print("H:");
  lcd.print(DHT.humidity);
  Serial.println("\n");
  Serial.println(DHT.humidity);    
  
  if (moistureValue < 500)
  {
    digitalWrite(relayPin, HIGH);
    lcd.setCursor(15,0);
    lcd.print("W");
  }
  else
  {
    digitalWrite(relayPin, LOW);
    lcd.setCursor(15,0);
    lcd.print(" ");
  }
  delay(5000);
}