// Define the pins for the 5 LEDs
int ledPins[] = {2, 3, 4, 5, 6};  // LEDs connected to pins 2, 3, 4, 5, 6
int numLeds = 5;  // Number of LEDs

// Delay time in milliseconds (can be changed)
int delayTime = 1000;  // Change this value to your desired delay (in milliseconds)

void setup() {
  // Set each LED pin as an output
  for (int i = 0; i < numLeds; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  // Turn on all LEDs
  for (int i = 0; i < numLeds; i++) {
    digitalWrite(ledPins[i], HIGH);
  }

  // Wait for the specified delay time
  delay(delayTime);

  // Turn off all LEDs
  for (int i = 0; i < numLeds; i++) {
    digitalWrite(ledPins[i], LOW);
  }

  // Wait for the specified delay time again before turning them on again
  delay(delayTime);
}