1```cpp
2const int ledPin = 13;
3
4void setup() {
5 pinMode(ledPin, OUTPUT);
6}
7
8void loop() {
9 digitalWrite(ledPin, HIGH); // Turn LED ON
10 delay(1000); // Wait 1 second
11
12 digitalWrite(ledPin, LOW); // Turn LED OFF
13 delay(1000); // Wait 1 second
14}
15```
16