stepper2

// imports
#include <Arduino.h>
#include <Stepper.h>

// pins
#define STEPPER_PIN_1 4
#define STEPPER_PIN_2 5

#define BUZZER_PIN 3

#define BUTTON_PIN_1 8
#define LED_PIN_1 9
#define BUTTON_PIN_2 10
#define LED_PIN_2 12
#define BUTTON_PIN_3 11
#define LED_PIN_3 13

// other vars
int motorRPM = 30;
int delayPerStep= 1/(motorRPM/60)/360*1.8*1000;
int dispenseDirection = true;

#define DEBUG 1
#if DEBUG == 1
#define log(message) Serial.println(message)
#else
#define log(message)
#endif

class Controller {
  private:
    int led_pin;
    int button_pin;
    int button_state = 0;
  public:
    Controller(int led_pin, int button_pin) {
      this -> led_pin = led_pin;
      this -> button_pin = button_pin;
      init();
    }

    void init() {
      pinMode(led_pin, OUTPUT);
      pinMode(button_pin, INPUT);
    }

    void ledOn() {
      digitalWrite(led_pin, HIGH);
    }

    void ledOff() {
      digitalWrite(led_pin, LOW);
    }

    void toggleLED() {
      digitalWrite(led_pin, !digitalRead(led_pin));
    }
    
    bool ledIsOn() {
      return (getLedState() == HIGH);
    }
    
    bool ledIsOff() {
      return (getLedState() == LOW);
    }

    byte getLedState() {
      return digitalRead(led_pin);
    }

    bool buttonIsPressed() {
      if (getButtonState() == HIGH && button_state == 0) {
        log("buttonIsPressed if condition");
        button_state = 1;
        return true;
      } else if (getButtonState() == LOW && button_state == 1) {
        log("buttonIsPressed else if condition");
        button_state = 0;
      }
      return false;
    }

    byte getButtonState() {
      return digitalRead(button_pin);
    }
};

void successSound() {
  tone(BUZZER_PIN, 988);
  delay(100);
  tone(BUZZER_PIN, 1319);
  delay(400);
  noTone(BUZZER_PIN);
}

void failureSound() {
  tone(BUZZER_PIN, 330);
  delay(100);
  tone(BUZZER_PIN, 245);
  delay(400);
  noTone(BUZZER_PIN);
}

// instantiate controllers
Controller controller1(LED_PIN_1, BUTTON_PIN_1);
Controller controller2(LED_PIN_2, BUTTON_PIN_2);
Controller controller3(LED_PIN_3, BUTTON_PIN_3);
Stepper motor(200, STEPPER_PIN_1, STEPPER_PIN_2);

void setup() {

  if (DEBUG == 1) {
    Serial.begin(9600);
    Serial.println("Started");
  }

  pinMode(BUZZER_PIN, OUTPUT);
  
  randomSeed(analogRead(0)); // to randomize preudo random number generation
  
  motor.setSpeed(motorRPM);
  
  delay(300);
}

void loop() {
  if (controller1.ledIsOff() && controller2.ledIsOff() && controller3.ledIsOff()) {
    int randomNumber = random(1,4);
    if (randomNumber == 1) {
      controller1.ledOn();
    } else if (randomNumber == 2) {
      controller2.ledOn();
    } else if (randomNumber == 3) {
      controller3.ledOn();
    }
    // controller3.ledOn();
  }
  
  if (controller1.buttonIsPressed()) {
    if (controller1.ledIsOn()) {
      controller1.ledOff();
      successRoutine();
    } else {
      failureSound();
    }
  } else if (controller2.buttonIsPressed()) {
    if (controller2.ledIsOn()) {
      controller2.ledOff();
      successRoutine();
    } else {
      failureSound();
    }
  } else if (controller3.buttonIsPressed()) {
    if (controller3.ledIsOn()) {
      controller3.ledOff();
      successRoutine();
    } else {
      failureSound();
    }
  }
  
}

void successRoutine() {
  successSound();
  turnAuger(50);
  delay(1000);
}

void turnMotor(int steps) {
  motor.step(steps);
  delay(abs(steps*delayPerStep));
}

void turnAuger(int steps) {
  int stepsForward = 50;
  int stepsBackward = 30;
  
  int count = 0;
  while (count < steps) {
    count = count + stepsForward - stepsBackward;
    turnMotor(stepsForward);
    turnMotor(-stepsBackward);
  }
  // turnMotor(200);
}