const int ledPin = 13; // LED connected to digital pin 13
void setup() {
pinMode(ledPin, OUTPUT); // Set ledPin as OUTPUT
}
void loop() {
for (int i = 0; i < 4; i++) { // Blink LED 4 times
digitalWrite(ledPin, HIGH); // Turn LED ON
delay(500); // Wait for 500 milliseconds
digitalWrite(ledPin, LOW); // Turn LED OFF
delay(500); // Wait for 500 milliseconds
}
while (true); // Stop the loop after 4 blinks
}