char red_led = 23;
char green_led = 18;
char yellow_led = 19;

long red_led_previous_millis = 0;
long green_led_previous_millis = 0;
long yellow_led_previous_millis = 0;

int red_led_interval = 1000;
int green_led_interval = 1000;
int yellow_led_interval = 1000;









void setup() 
{

  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  
  pinMode (red_led, LOW);
  pinMode (green_led, LOW);
  pinMode (yellow_led, LOW);
  

}

void loop() 
{





  delay(10); 



  
}