#include <LiquidCrystal.h>
#include <Servo.h>

// Pin assignments
const int capSensorPin = 2;     // Capacitive Proximity Sensor input pin
const int inductiveSensor1 = 3; // Inductive Sensor 1 input pin
const int inductiveSensor2 = 4; // Inductive Sensor 2 input pin
const int led1Pin = 5;          // LED 1 pin
const int led2Pin = 6;          // LED 2 pin
const int buzzer1Pin = 7;       // Buzzer 1 pin
const int buzzer2Pin = 8;       // Buzzer 2 pin
const int servo1Pin = 9;        // Servo 1 control pin
const int servo2Pin = 10;       // Servo 2 control pin

// Create servo objects
Servo servo1;
Servo servo2;
// Create LCD object
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void setup() {
  // Initialize components
  pinMode(capSensorPin, INPUT);
  pinMode(inductiveSensor1, INPUT);
  pinMode(inductiveSensor2, INPUT);
  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  pinMode(buzzer1Pin, OUTPUT);
  pinMode(buzzer2Pin, OUTPUT);
  
  // Attach servos to pins
  servo1.attach(servo1Pin);
  servo2.attach(servo2Pin);
  
  // Initialize LCD
  lcd.begin(16, 2);
  lcd.print("Metal: ");
  lcd.setCursor(0, 1);
  lcd.print("Plastic: ");
}

void loop() {
  // Read sensor values
  int capSensorValue = digitalRead(capSensorPin);
  int inductiveSensorValue1 = digitalRead(inductiveSensor1);
  int inductiveSensorValue2 = digitalRead(inductiveSensor2);

  // Display sensor values on LCD
  lcd.setCursor(7, 0);
  lcd.print(capSensorValue);
  lcd.setCursor(8, 1);
  lcd.print(inductiveSensorValue1);
  lcd.setCursor(8, 1);
  lcd.print(inductiveSensorValue2);
  
  // Check if metal is detected
  if (inductiveSensorValue1 == HIGH) {
    digitalWrite(led1Pin, HIGH);
    tone(buzzer1Pin, 1000, 100);
    servo1.write(90);
  } else {
    digitalWrite(led1Pin, LOW);
    noTone(buzzer1Pin);
    servo1.write(0);
  }
  
  // Check if plastic is detected
  if (inductiveSensorValue2 == HIGH) {
    digitalWrite(led2Pin, HIGH);
    tone(buzzer2Pin, 1000, 100);
    servo2.write(90);
  } else {
    digitalWrite(led2Pin, LOW);
    noTone(buzzer2Pin);
    servo2.write(0);
  }
  
  delay(200); // Adjust the delay as needed
}