const int trigPin=8;
const int echoPin=9;
#include <LiquidCrystal.h>
 LiquidCrystal lcd(12,11,5,4,3,2);

void setup(){
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(5, OUTPUT);
  lcd.begin(16,2);
}

void loop() {
long jarak,waktu ;
int a = digitalRead(8);
int b = digitalRead(9);
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
waktu=pulseIn(echoPin,HIGH);
jarak=waktu/50;
delay(100);
lcd.setCursor(1,0);
lcd.print("jarak=");
lcd.print(jarak);
lcd.print("cm");

}