#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

int printriger=12;
int prinecho=9;
long waktu;
int jarak;
void setup() {
   lcd.init();
   lcd.backlight();
   pinMode(printriger, OUTPUT);
   pinMode(prinecho, INPUT);
   Serial.begin(9600);
}
void loop() {
digitalWrite(printriger, LOW); 
delayMicroseconds(3); 
digitalWrite(printriger, HIGH); 
delayMicroseconds(12); 
digitalWrite(printriger, LOW);
waktu=pulseIn(prinecho, HIGH);
jarak=waktu*0.034/2;
Serial.print("jarak :");
Serial.println(jarak);
delay(300);


lcd.setCursor(0,0);
   lcd.print("jarak :");
   lcd.setCursor(8,0);
   lcd.print(jarak);
   lcd.setCursor(11,0);
   lcd.print("cm");

   if (jarak >200)(
    lcd.setCursor(0,1)

    lcd.print("jauh");
   )

   if (jarak <200)(
    lcd.setCursor(0,1)

    lcd.print("dekat");
   )
}