// Define the LED pins
const int led1 = 8;  // LED 1 pin
const int led2 = 10; // LED 2 pin
const int led3 = 12; // LED 3 pin

void setup() {
  // Initialize the LED pins as outputs
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
}

void loop() {
  // Pattern 1: All LEDs blink together
  digitalWrite(led1, HIGH);
  digitalWrite(led2, HIGH);
  digitalWrite(led3, HIGH);
  delay(300);  // Wait for 300 milliseconds
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  delay(300);  // Wait for 300 milliseconds
  
  // Pattern 2: LEDs blink in sequence
  digitalWrite(led1, HIGH);
  delay(200);
  digitalWrite(led1, LOW);
  digitalWrite(led2, HIGH);
  delay(200);
  digitalWrite(led2, LOW);
  digitalWrite(led3, HIGH);
  delay(200);
  digitalWrite(led3, LOW);

  // Pattern 3: Random LED blinking
  digitalWrite(led1, random(0, 2));  // Randomly on/off
  digitalWrite(led2, random(0, 2));  // Randomly on/off
  digitalWrite(led3, random(0, 2));  // Randomly on/off
  delay(500);  // Wait for 500 milliseconds
  
  // Pattern 4: All LEDs glow steadily
  digitalWrite(led1, HIGH);
  digitalWrite(led2, HIGH);
  digitalWrite(led3, HIGH);
  delay(1000);  // Wait for 1 second
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  delay(500);  // Wait for 500 milliseconds
  
  // Repeat patterns
}