#include <Servo.h>
 Servo servosatu;
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
int trig = 12;
int echo = 13;
int durasi, jarak; 

void setup() {
  // put your main code here, to run repeatedly:
  pinMode(trig, OUTPUT );
  pinMode(echo, INPUT );
  Serial .begin(9600);
  lcd.init ();
  lcd.backlight ();
}

void loop () {

digitalWrite(trig, LOW);
delayMicroseconds(8);
digitalWrite(trig, HIGH);
delayMicroseconds(8);
digitalWrite(trig, LOW);
delayMicroseconds(8);

durasi = pulseIn (echo, HIGH );
jarak = (durasi / 2) / 29.1;

if(jarak<40){
servosatu.write(90);
}

lcd.setCursor (12.0);
lcd.print("Status Tempat Sampah");
lcd.scrollDisplayLeft();
delay(200);
lcd.setCursor (12,1);
lcd.print("Tempat Sampah Tertutup");
delay (500);
}

//jika datanya kita masukan ke port serial makan yg dikirim akan menyesuaikan format tsb. 
.