โค้ดเครื่องขายน้ำหยอดเหรียญ

// Define constants for pin numbers

const int LED1_PIN = 2;

const int LED2_PIN = 8;

const int LED3_PIN = 12;

const int START_SWITCH_PIN = 6;

const int SW1_PIN = 3;

const int SW2_PIN = 4;

const int SW3_PIN = 5;

// Define variables

bool circuitStarted = false;

bool switchPressed = false;

unsigned long previousMillis = 0;

const long flashInterval = 5000;  // Flash interval in milliseconds

const int flashes = 2;  // Number of flashes

void setup() {

  // Set the LED pins as OUTPUT

  pinMode(LED1_PIN, OUTPUT);

  pinMode(LED2_PIN, OUTPUT);

  pinMode(LED3_PIN, OUTPUT);

  // Set the switch pins as INPUT with internal pull-up resistors

  pinMode(START_SWITCH_PIN, INPUT);

  pinMode(SW1_PIN, INPUT_PULLUP);

  pinMode(SW2_PIN, INPUT_PULLUP);

  pinMode(SW3_PIN, INPUT_PULLUP);

}

// Function to flash the specified LED

void flashLED(int ledPin) {

  for (int i = 0; i < flashes; i++) {

    digitalWrite(ledPin, HIGH);  // Turn on the LED

    delay(500);  // Wait for 0.5 seconds

    digitalWrite(ledPin, LOW);   // Turn off the LED

    if (i < flashes - 1) {

      delay(flashInterval);  // Wait for the specified interval between flashes

    }

  }

}

void loop() {

  // Check if the Start switch is pressed

  if (digitalRead(START_SWITCH_PIN) == LOW) {

    // Reset switchPressed when Start is pressed

    switchPressed = false;

    circuitStarted = true;

  }

  // If the circuit is started, check for button presses

  if (circuitStarted) {

    // Check and handle SW1 press

    if (!switchPressed && digitalRead(SW1_PIN) == LOW) {

      flashLED(LED1_PIN);

      switchPressed = true;

    }

    // Check and handle SW2 press

    if (!switchPressed && digitalRead(SW2_PIN) == LOW) {

      flashLED(LED2_PIN);

      switchPressed = true;

    }

    // Check and handle SW3 press

    if (!switchPressed && digitalRead(SW3_PIN) == LOW) {

      flashLED(LED3_PIN);

      switchPressed = true;

    }

  }

}