#define BLUE 12
#define RED 13


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

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  
  digitalWrite(RED, HIGH);
  digitalWrite(BLUE, LOW);
  delay(500);
  digitalWrite(RED, LOW);
  digitalWrite(BLUE, HIGH);
  delay(500);

}