// https://wokwi.com/projects/353032053211476993

const int LIGHT_SENSOR_PIN = A0; // Arduino pin connected to light sensor's  pin
const int LED_PIN          = 6;  // Arduino pin connected to LED's pin
const int ANALOG_THRESHOLD = 777;
// const int BUZZER_PIN       = 4;

// int startMode = 1; // set to 1 by default

void setup() {
  Serial.begin(9600);
  Serial.println("Hello Beep World!\n");

  pinMode(LED_PIN, OUTPUT);
}

bool needABeep;     // state change on analog "button" sets this
byte buttonState;		// sorry, borrowed from state change detection example!
byte lastButtonState;

unsigned long startTime;
const unsigned long desiredinterval = 1222;

void loop() {
  buttonState = analogRead(LIGHT_SENSOR_PIN) > ANALOG_THRESHOLD;

  if (buttonState != lastButtonState) {
    if (buttonState == HIGH) {
      needABeep = true;
    }
  }
  lastButtonState = buttonState;

// start a beep?
  if (needABeep) {
    digitalWrite (LED_PIN, HIGH);
    startTime = millis();
    needABeep = false;  // we started the beep, OK?
  }

// turn off beep?
  if (millis() - startTime > desiredinterval) {
    digitalWrite(LED_PIN, LOW);
  }

  delay(50);  // global poor man's debouncing
}