#include <Wire.h>
#include <LiquidCrystal_I2C.h>


#define soll_pin A0
#define motor_pin 3

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int dry = 535; // value for dry sensor
const int wet = 220; // value for wet sensor
void setup() {
  // put your setup code here, to run once:
  pinMode(soll_pin, INPUT);
  pinMode(motor_pin, OUTPUT);
  Serial.begin(9600);
  lcd.begin();
  lcd.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:
  int soll = analogRead(A0);
  // Serial.println(soll);
  int Humididy = map(soll, wet, dry, 100, 0);
  if (Humididy <= 0)
    Humididy = 0;
  lcd.setCursor(1, 0);
  lcd.print("Humididy= ");
  lcd.setCursor(11, 0);
  lcd.print(Humididy);
  lcd.print(" %  ");
  delay(1000);
  //lcd.clear();
  Serial.print(Humididy);

  Serial.println("%");
  delay(100);
  if (Humididy <= 50)
  {
    digitalWrite(motor_pin, LOW);
    delay(1000);
  }
  else {
    digitalWrite(motor_pin, HIGH);
    delay(1000);
  }
}