// Pin connected to the LED
#define ledPin1 26
const int ledPin2 = 0;
const int ledPin3 = 1;

void setup() {
  // Initialize the LED pin as an output
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
}

void loop() {
  // Turn on the LED
  digitalWrite(ledPin1, HIGH);
  delay(100); 
  digitalWrite(ledPin2, HIGH);
  delay(100);
   digitalWrite(ledPin3, HIGH);
  delay(100);  // Wait for 1 second

  // Turn off the LED
  digitalWrite(ledPin1, LOW);
  delay(100); 
  digitalWrite(ledPin2, LOW);
  delay(100); 
  digitalWrite(ledPin3, LOW);
  delay(100);  // Wait for 1 second
}