//#include <Ardinuo.h>
#define led 12
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(led, OUTPUT);

}

void loop() {
  digitalWrite(led , HIGH);
  delay(1000);
  digitalWrite(led, LOW);
  delay(1000);
}