#include <LiquidCrystal_I2C.h>
#include <DHT.h>

#define DHTPIN 2 // Pin where the DHT sensor is connected
#define DHTTYPE DHT22
int relayPin=8; // DHT 22 (AM2302) sensor type

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows

void setup() {
  lcd.begin(16, 2);
  dht.begin();
  pinMode(relayPin, OUTPUT);
  digitalWrite(relayPin, LOW);
  Serial.begin(9600);
  dht.begin();
 }
  

void loop() {
  // Wait a few seconds between measurements
  delay(2000);

  // Reading temperature or humidity takes about 250 milliseconds!
  float humidity = dht.readHumidity();
  
  // Check if any reads failed and exit early (to try again).
  if (isnan(humidity)) {
    lcd.print("Failed to read");
    return;
  }

  // Print humidity on the LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Humidity: ");
  lcd.print(humidity);
  lcd.print("%");
  if(humidity<10){
  digitalWrite(relayPin,HIGH); 
  Serial.print("Need water \n");

  }
  else{
   digitalWrite(relayPin,LOW); 
  Serial.print("Good condition \n");
  }
  

 }