#include <LiquidCrystal_I2C.h>
#define PIN_TRIG 3
#define PIN_ECHO 2
LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display

void setup()
{ 
  Serial. begin(115200);
  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  lcd.init();                      // initialize the lcd
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("Khotchanit");
  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(9, HIGH);
delay(100);
 }else{
   digitalWrite(9,LOW);
     delay(100);
}
}