#include <Servo.h>
#include <LiquidCrystal.h>
#define sensorPin 13
#define buzzerPin 7
#define redLed 8
#define greenLed 9
#define ldrA A1
#define ldrB A2
int servoPin = 10;
// Create a servo object 
Servo Servo1;
LiquidCrystal lcd (12 , 11, 5 , 4 , 3 , 2 );
int threshold = 200;
void setup() {
  lcd.begin(16, 2);
  pinMode(sensorPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
  pinMode(redLed, OUTPUT);
  pinMode(greenLed, OUTPUT);
  pinMode(ldrA, INPUT);
  pinMode(ldrB, INPUT);
  pinMode( servoPin, OUTPUT);
  Servo1.attach(servoPin);
}

void loop() {
  // put your main code here, to run repeatedly:
  lcd.clear();
  lcd.print ("Hello,Insert");
  lcd.setCursor(0, 1);
  lcd.print ("1 coin.");
   Servo1.write(0); 
   delay(1000); 
  while (digitalRead(sensorPin) == 1); //no coin
  lcd.clear();
  lcd.print ("coin inserted.");
  lcd.setCursor(0, 1);
  lcd.print("choose A or B");
  while ((analogRead(ldrA) > threshold) && (analogRead(ldrB) > threshold)); //no hand
  lcd.clear();
  if (analogRead(ldrA) < threshold) { //no hand

    lcd.print ("You chosing A");
    digitalWrite(redLed, HIGH);
    digitalWrite(buzzerPin, HIGH);
       Servo1.write(180); 
   delay(1000); 
    delay(100);
    digitalWrite(redLed, LOW);
    digitalWrite(buzzerPin, LOW);
       Servo1.write(0); 
   delay(1000); 
  }
  else if (analogRead(ldrB) < threshold) { //no hand
    lcd.print ("You chosing B");
    digitalWrite(greenLed, HIGH);
    digitalWrite(buzzerPin, HIGH);
      Servo1.write(180); 
   delay(1000); 
    delay(100);
    digitalWrite(greenLed, LOW);
    digitalWrite(buzzerPin, LOW);
       Servo1.write(0); 
   delay(1000); 
  
  }
  delay(5000);
}