#define trig 12
#define echo 11
long waktu, jarak;
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

  
void setup() {
  Serial.begin(9600);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  lcd.begin(16,2);
  // put your setup code here, to run once:

}
void loop() {
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);
  waktu = pulseIn(echo,HIGH);
  jarak = waktu/58;
  Serial.print(jarak);
  Serial.println(" cm");
  delay(1000);
  lcd.setCursor(0,0);
  lcd.print(jarak);
  lcd.scrollDisplayLeft();
  delay(300);
  lcd.setCursor(0,1);
  lcd.print("Sentra IOT");
  lcd.scrollDisplayLeft();
  delay(300);
  lcd.backlight();
}