// Pin definition
const int outputPin = 12; // Change to the desired pin
// Time intervals (in milliseconds)
const unsigned long onTime = 5000;  // Time in ON state (5 seconds)
const unsigned long offTime = 3000; // Time in OFF state (3 seconds)

// Variables to track the timing
unsigned long previousMillis = 0;
bool outputState = true;  // Initially the output is ON

void setup() {
  pinMode(outputPin, OUTPUT); // Set the pin as an output
  digitalWrite(outputPin, HIGH); // Start in ON state
}

void loop() {
  unsigned long currentMillis = millis();

  if (outputState) {
    // If output is ON, check if it's time to turn OFF
    if (currentMillis - previousMillis >= onTime) {
      previousMillis = currentMillis; // Reset the timer
      outputState = false;  // Change state to OFF
      digitalWrite(outputPin, LOW); // Turn OFF the output
    }
  } else {
    // If output is OFF, check if it's time to turn ON
    if (currentMillis - previousMillis >= offTime) {
      previousMillis = currentMillis; // Reset the timer
      outputState = true;   // Change state to ON
      digitalWrite(outputPin, HIGH); // Turn ON the output
    }
  }
}