int LED_BUILTIN=6;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_BUILTIN,HIGH);
  delay(1);
  digitalWrite(LED_BUILTIN,LOW);  
  delay(1);
  
// put your main code here, to run repeatedly:

}