#define SENSOR_PIN A0
#define LED_PIN 13
#define BUZZER_PIN 12

void setup() {
  pinMode(SENSOR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  
  Serial.begin(9600); // initialize the serial monitor
}

void loop() {
  int sensorValue = analogRead(SENSOR_PIN);

  if(sensorValue < 512) { // If the "soil" is "dry"
    digitalWrite(LED_PIN, HIGH); // Turn on the "water pump"
    digitalWrite(BUZZER_PIN, HIGH); // Sound the buzzer
    Serial.println("Watering Plant");
    delay(5000); // Keep the "water pump" on for 5 seconds
    digitalWrite(LED_PIN, LOW); // Turn off the "water pump"
    digitalWrite(BUZZER_PIN, LOW); // Turn off the buzzer
    Serial.println("Plant Watered");
  }

  delay(1000); // Wait for 1 second
}