#include <LiquidCrystal_I2C.h>
#define PIN_TRIG 3
#define PIN_ECHO 2
LiquidCrystal_I2C lcd(0x27,20,4);

void setup()
{
  Serial.begin(115200);
  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_TRIG, INPUT);
  pinMode(8, OUTPUT);
  pinMode(7, INPUT);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("Chayaluck");
  lcd.setCursor(2,1);


}

void loop()
{
   // Start a new measurement:
  digitalWrite(PIN_TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIG, LOW);

  //Read the result :
  int duration = pulseIn(PIN_ECHO, HIGH);
  Serial.print("Distance in CM: ");
  Serial.println(duration / 58);
  Serial.print("Distance in inches: ");
  Serial.println(duration / 148);
   lcd.setCursor(2,1);
  lcd.print(duration/58);
  
  if(duration/58<200)
  {
    digitalWrite(8, HIGH);
    delay(100);
  }else{
    digitalWrite(8, LOW);
    delay(100);
  }

  if(duration/58>300)
  {
    digitalWrite(7, HIGH);
    delay(100);
  }else{
    digitalWrite(7, LOW);
    delay(100);
  }
}