void setup() {
  Serial.begin(1200); // 300 1200 2400 4800 okay
}

void loop() {
  Serial.write(0xa5);
}


#if 0
void setup() {
  Serial.begin(115200);
  Serial.println("Please enter your name:");
  while (!Serial.available()); // Wait for input
  String name = Serial.readStringUntil('\n');
  Serial.print("Hello, ");
  Serial.print(name);
  Serial.println("!");
}

void loop() {
}
#endif