Day-01 Blinking LED

1const int ledPin = 13;
2
3void setup() {
4  pinMode(ledPin, OUTPUT);
5}
6
7void loop() {
8  digitalWrite(ledPin, HIGH); // Turn LED ON
9  delay(1000);                // Wait 1 second
10
11  digitalWrite(ledPin, LOW);  // Turn LED OFF
12  delay(1000);                // Wait 1 second
13}