#include <LiquidCrystal_I2C.h>
#include <Servo.h>
LiquidCrystal_I2C lcd (0x27,16,2);
Servo servoku;
int led = 13 ;
int bujur = 12;
int t1 =10;
int e1 = 9;
int t2 = 8;
int e2 = 7;
int t3 = 6;
int e3 =5;


void setup() {
servoku.attach(11);
Serial.begin(9600);
pinMode(led, OUTPUT);
pinMode(t1, OUTPUT);
pinMode(t2, OUTPUT);
pinMode(e1, INPUT);
pinMode(e2, INPUT);
pinMode(bujur, OUTPUT);
lcd.init();
lcd.backlight();
}

void loop() {
  //    sensor 1
digitalWrite(t1, LOW);
delayMicroseconds(2);
digitalWrite(t1, HIGH);
delayMicroseconds(10);
digitalWrite(t1, LOW);

long waktu,jarak;
waktu = pulseIn(e1,HIGH);
jarak = (waktu*0.034)/2;
Serial.println(jarak);
delay(1000);


//    sensor 2


digitalWrite(t2, LOW);
delayMicroseconds(2);
digitalWrite(t2, HIGH);
delayMicroseconds(10);
digitalWrite(t2, LOW);

long waktu2,jarak2;
waktu2 = pulseIn(e2,HIGH);
jarak2 = (waktu2*0.034)/2;

Serial.println(jarak);
delay(1000);

//    sensor 3


digitalWrite(t3, LOW);
delayMicroseconds(2);
digitalWrite(t3, HIGH);
delayMicroseconds(10);
digitalWrite(t3, LOW);

long waktu3,jarak3;
waktu2 = pulseIn(e3,HIGH);
jarak2 = (waktu2*0.034)/2;

Serial.println(jarak);
delay(1000);


// kondisi untuk sensor 2

if (jarak2&&jarak3<101){
  lcd.clear();
  lcd.setCursor(3,0);
  lcd.print("bak penuh");
 
  lcd.setCursor(2,1);
  lcd.print("buang sampah");

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

else{
 digitalWrite(led, LOW);
 lcd.clear();
 lcd.setCursor(3,0);
  lcd.print("bak kosong ");
 
  lcd.setCursor(5,1);
  lcd.print("santai");
}


if(jarak2&&jarak3<200){
  tone (bujur,1000);
  delay(500);
 
}

else{
  noTone(bujur);
}



// kondisi unttuk sensor 1

if(jarak<101){
  servoku.write(90);
}
else{
  servoku.write(0);
}

}