Code
void setup() {
  Serial.begin(9600);
}
void loop() {
 
  Serial.println("Hello world!");
  
  while (true) {
  }
}
 YetAnotherRaspberryPiFanpage
            YetAnotherRaspberryPiFanpage
        void setup() {
  Serial.begin(9600);
}
void loop() {
 
  Serial.println("Hello world!");
  
  while (true) {
  }
}