#include<LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
#define trigPin 3
#define echoPin 2
#define SDAPin A4
#define SCLPin A5
int jarak;
long durasi;

void setup()
{
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  lcd.init();
  lcd.backlight();
}

void loop()
{

  digitalWrite(trigPin, LOW);
  delayMicroseconds(5);

  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);

  durasi=pulseIn(echoPin,HIGH);
  jarak = durasi*0,034/2;

  lcd.setCursor(0,0);
  lcd.print("jarak=");
  lcd.print(jarak);
  lcd.print("cm");
  delay(50);
}