void setup() {
  Serial.begin(115200);

  pinMode(17, OUTPUT);
}

void loop() {
  const String message = "Hello BME60A";

  for (int i=0; i<message.length(); i++){
    char c = message[i];

    for(int cbit=7; cbit>=0; cbit--){
      int value = bitRead(c, cbit);

     if (value == 1){
      digitalWrite(17, HIGH);
     } else {
      digitalWrite(17, LOW);
     }
     delay (100);
    }
  }

  digitalWrite(17, LOW);
}