void setup() { // put your setup code here, to run once: //Delay startup so the Serial port has time to appear //While the LED is flashing, keep clicking the //Serial Monitor button on the top right of the window //(the one that looks like a magnifying glass) int i; pinMode(13, OUTPUT); for(i = 0; i < 10; i++) { digitalWrite(13, HIGH); delay(500); digitalWrite(13, LOW); delay(500); } //The board has settled down now. //Do everything as normal in setup() below this point. Serial.begin(9600); Serial.println("Normally you would never see this message"); } void loop() { // put your main code here, to run repeatedly: }