#include <Servo.h>
#include <LiquidCrystal_I2C.h>
#define ECHO_PIN1 3
#define TRIG_PIN1 4
#define ECHO_PIN2 5
#define TRIG_PIN2 6
#define ECHO_PIN3 8
#define TRIG_PIN3 9
#define ECHO_PIN4 10
#define TRIG_PIN4 11
LiquidCrystal_I2C lcd(0x27, 16, 2);
#include <Servo.h>
Servo servo1;
Servo servo2;
Servo servo3;
int pos = 0;
long durasi1;
int jarak1;
long durasi2;
int jarak2;
long durasi3;
int jarak3;
long durasi4;
int jarak4;
int buzzer = 13;

void setup() {
  lcd.begin(16,2);
  lcd.init();
  lcd.backlight();
  pinMode(TRIG_PIN1, OUTPUT);
  pinMode(ECHO_PIN1, INPUT);
  pinMode(TRIG_PIN2, OUTPUT);
  pinMode(ECHO_PIN2, INPUT);
  pinMode(TRIG_PIN3, OUTPUT);
  pinMode(ECHO_PIN3, INPUT);
  pinMode(TRIG_PIN4, OUTPUT);
  pinMode(ECHO_PIN4, INPUT);
  pinMode(buzzer, OUTPUT);
  servo1.attach(0);
  servo2.attach(1);
  servo3.attach(2);
  Serial.begin(9600);
  servo1.write(0);
  servo2.write(0);
  servo3.write(0);

}

void loop() {
   
  digitalWrite(TRIG_PIN1,LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN1, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN1, LOW);
  durasi1 = pulseIn(ECHO_PIN1, HIGH);   
  jarak1 = durasi1 * 0.034 / 2;

  if (jarak1 <=100){
  Serial.println("HMM");
  Serial.print(jarak1);
  Serial.println("HMMM");
  lcd.clear();
  lcd.setCursor(1, 0);
  lcd.print("TEMPAT SAMPAH");
  lcd.print(jarak1);
  lcd.setCursor(2, 1);
  lcd.print("LOGAM & NON LOGAM");
  servo1.write(90);
  servo1.write(0);
  delay(1500);
  }
  else{

  }

 
}