const int ledPin1 = 8;  // LED connected to digital pin 8
const int ledPin2 = 9;  // LED connected to digital pin 9

void setup() {
  pinMode(ledPin1, OUTPUT);  // Initialize the first LED pin as an output
  pinMode(ledPin2, OUTPUT);  // Initialize the second LED pin as an output
}

void loop() {
  digitalWrite(ledPin1, HIGH);  // Turn the first LED on
  delay(500);                   // Wait for 500 milliseconds (0.5 seconds)
  digitalWrite(ledPin1, LOW);   // Turn the first LED off
  delay(500);                   // Wait for 500 milliseconds

  digitalWrite(ledPin2, HIGH);  // Turn the second LED on
  delay(1000);                  // Wait for 1000 milliseconds (1 second)
  digitalWrite(ledPin2, LOW);   // Turn the second LED off
  delay(1000);                  // Wait for 1000 milliseconds
}