//Daniel Lemos da Rosa -Site Usina Info 

// ledPin refers to ESP32-CAM GPIO 4 (flashlight)

const int ledPin = 4;
void setup() 
{
  // initialize digital pin ledPin as an output
  pinMode(ledPin, OUTPUT);
}
 
void loop() 
{
  digitalWrite(ledPin, HIGH);
  delay(2000);
  digitalWrite(ledPin, LOW);
  delay(2000);
}