const int relayPin = 7;       // Relay control pin
const int potPin = A0;        // Potentiometer pin
const unsigned long interval = 3600000;  // 1 hour in milliseconds
unsigned long previousMillis = 0;

void setup() {
  pinMode(relayPin, OUTPUT);
  digitalWrite(relayPin, LOW);  // Ensure relay is off
}

void loop() {
  unsigned long currentMillis = millis();
  
  // Check if 1 hour has passed
  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis; // Reset the timer

    // Read the potentiometer value (0-1023) and map it to 1-30 seconds
    int potValue = analogRead(potPin);
    int delayTime = map(potValue, 0, 1023, 1000, 30000); // Map to 1000ms (1s) to 30000ms (30s)

    digitalWrite(relayPin, HIGH); // Activate the relay
    delay(delayTime);              // Keep the relay activated for the mapped time
    digitalWrite(relayPin, LOW);   // Deactivate the relay
  }
}