void setup() {
// put your setup code here, to run once:
pinMode(2, OUTPUT);
Serial.begin(115200);
}
void loop() {
// put your main code here, to run repeatedly:
digitalWrite(2, LOW); // turn off LED
Serial.println("LED is off");
delay(1000); // wait 1 second
digitalWrite(2, HIGH); // turn on LED
Serial.println("LED is on");
delay(1000); // wait 1 second
}