// sketch.ino

// Constants
const int ledPin = 2;  // The built-in LED on the ESP32 is connected to GPIO 2

void setup() {
  // Initialize the LED pin as an output:
    pinMode(ledPin, OUTPUT);
    }

    void loop() {
      // Turn the LED on (HIGH is the voltage level)
        digitalWrite(ledPin, HIGH);
          // Wait for a second
            delay(1000);
              // Turn the LED off by making the voltage LOW
                digitalWrite(ledPin, LOW);
                  // Wait for a second
                    delay(1000);
                    }