#include <LiquidCrystal_I2C.h>
#include <Servo.h>
LiquidCrystal_I2C lcd(0x27,16,2);
Servo servoku;
int led = 2 ;
int bujur = 4;
int tr  = 7;
int eco = 8;


void setup() {
  servoku.attach(3);
pinMode(led, OUTPUT);
Serial.begin(9600);
pinMode(tr, OUTPUT);
pinMode(eco, INPUT);
pinMode(bujur, OUTPUT);
lcd.init();
lcd.backlight();
}

void loop() {
  digitalWrite(tr, LOW);
  delayMicroseconds(2);
  digitalWrite(tr, HIGH);
  delayMicroseconds(10);
  digitalWrite(tr, LOW);

  long waktu,jarak;
waktu = pulseIn(eco,HIGH);
jarak = (waktu *0.034)/2;
Serial.println(jarak);


  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Tong Sampah Otomatis Berbasis Internet of Things");
  lcd.scrollDisplayRight ();
delay(1000);

  lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("Inovasi Prakerin TKJ 2024");
  lcd.scrollDisplayRight ();

delay(1000);


if(jarak<100){
     servoku.write(180);
  delay(500);


  digitalWrite(led, HIGH);
  delay(1000);
}

else{
  servoku.write(0);
  digitalWrite(led,LOW);
}


  if (jarak<200){
   tone (bujur,100);
delay(100);
  tone (bujur,10);
  delay(100);
  }

else{
 noTone (bujur);
 delay(2);
}
}