#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#define DHT_PIN 7
int led1 = 2;
DHT dht(DHT_PIN, DHT22);

LiquidCrystal_I2C lcd(0x27, 16, 2);
float L = A1 ;
void setup() {
  Serial.begin(9600);
  dht.begin();
  lcd.init();
  lcd.backlight();
  pinMode(L, INPUT);
  pinMode (led1,OUTPUT);
}
void loop() {
  float L1 = analogRead(L);
  float EC = dht.readTemperature();
  float pH = dht.readHumidity();
Serial. print(L1 );
  if( L1 >= 1000){
    lcd.clear() ;
    lcd.setCursor(5, 0);
    lcd.print(" Error");
  } else if  (L1 <= 1001) 
  {
    
    lcd.setCursor(0, 0);
    lcd.print("EC: ");
    lcd.print(L1);
    lcd.print(" pmm");

    lcd.setCursor(0, 1);
    lcd.print("pH: ");
    lcd.print(pH);
    lcd.print(" Level");

  }
delay(100);
  if ( L1 >= 500){digitalWrite(led1, HIGH);}
  if ( L1 >= 600) { digitalWrite(led1, LOW);}
  else  if ( L1 <= 501){digitalWrite(led1, LOW); }
  delay(100);
}