//seorang siswa disekolah SMA MAju Tak Gentar ingin membuat tempat sampah pintar dengan Arduino Uno. Siswa tersebut memiliki tinggi tempat sampah 100cm.
// Adapun fitur yang di inginkan adalah sebagai berikut:
// 1. Tutup tempat sampah akan terbuka ketika tangan di dekatkan ke sensor dengan jarak 1cm sd 10cm
// 2. LCD Menampilkan tulisan "Terbuka" saat no 1 dikerjakan
// 3. Membaca kapasitas sampah dan menampilkan pada LCD secara realtime

#include <Servo.h>
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <RTClib.h>


const int TRIG_PIN1 = 6;
const int ECHO_PIN1 = 7;
const int TRIG_PIN2 = 5;
const int ECHO_PIN2 = 4;
const int SERVO_PIN = 9;


RTC_DS1307 rtc;
LiquidCrystal_I2C lcd1(0x27, 20, 4);
LiquidCrystal_I2C lcd2(0x3F, 16, 2);
Servo servo;


char daysOfTheWeek[7][12] = {"Minggu","Senin", "Selasa", "Rabu", "Kamis", "Jum'at", "Sabtu"};
float duration_us1, distance_cm1;
float duration_us2, distance_cm2;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  lcd1.begin(20,4);
  lcd1.backlight();
  lcd2.begin(16,2);
  lcd2.backlight();
  
  pinMode(TRIG_PIN1, OUTPUT);
  pinMode(ECHO_PIN1, INPUT);
  pinMode(TRIG_PIN2, OUTPUT);
  pinMode(ECHO_PIN2, INPUT);
  servo.attach(SERVO_PIN);

  if(!rtc.begin()){
    lcd1.println("Couldn't find RTC");
    while(1);
  }
  if(!rtc.isrunning()){
    lcd1.println("RTC is not running, let's set the time!");
    rtc.adjust(DateTime(F(__DATE__ ),F(__TIME__)));
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  
  DateTime now = rtc.now();

//Sensor Ultrasonik 1
{ digitalWrite(TRIG_PIN1, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN1, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN1, LOW);
  duration_us1 = pulseIn(ECHO_PIN1, HIGH);
  distance_cm1 = 0.017 * duration_us1;
}

//Sensor Ultrasonik 2
{ digitalWrite(TRIG_PIN2, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN2, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN2, LOW);
  duration_us2 = pulseIn(ECHO_PIN2, HIGH);
  distance_cm2 = 0.017 * duration_us2;
}

//Display 1
  lcd1.clear();
  lcd1.setCursor(3,0);
  lcd1.print("Tempat  Sampah");
  lcd1.setCursor(6,1);
  lcd1.print("Automatic");
  lcd1.setCursor(3,2);
  lcd1.print(daysOfTheWeek[now.dayOfTheWeek()]);
  lcd1.print("/");
  lcd1.print(now.day(),DEC);
  lcd1.print(':');
  lcd1.print(now.month(),DEC);
  lcd1.print(':');
  lcd1.print(now.year(),DEC);
  lcd1.setCursor(1,3);
  lcd1.println();
  lcd1.println(now.hour(),DEC);
  lcd1.println(':');
  lcd1.println(now.minute(),DEC);
  lcd1.println(':');
  lcd1.print(now.second(),DEC);
  
  
delay (3000);

  if (distance_cm1 <= 10){
    servo.write(180);
    lcd1.clear();
    lcd1.setCursor(3,0);
    lcd1.print("Tempat  Sampah");
    lcd1.setCursor(7,2);
    lcd1.print("Terbuka");
    
    delay(3000);
    

  } else{ 
    servo.write(90);
    lcd1.clear();
    lcd1.setCursor(3,0);
    lcd1.print("Tempat  Sampah");
    lcd1.setCursor(7,2);
    lcd1.print("Ditutup");

    delay(1000);
    
    
  }

Serial.print("jarak = ");
Serial.print(distance_cm2);
Serial.println(" cm");

delay(1000);

//Display 2

if (distance_cm2 <= 80){
  
    lcd2.clear();
    lcd2.setCursor(1,0);
    lcd2.print("Tempat Sampah");
    lcd2.setCursor(1,1);
    lcd2.print("Tersedia");
    
    delay(3000);
    

  } else{ 
    
    lcd2.clear();
    lcd2.setCursor(1,0);
    lcd2.print("Tempat  Sampah");
    lcd2.setCursor(1,2);
    lcd2.print("Sudah Penuh");

    delay(1000);

}
}