// Define the pin connections
const int sensorPin = A0; // Pin untuk sensor kelembaban tanah
const int pumpPin = 7; // Pin untuk relay yang mengontrol pompa air

// Define the threshold for soil moisture
const int threshold = 500; // Nilai ambang batas kelembaban tanah

void setup() {
  // Initialize serial communication
  Serial.begin(9600);
  
  // Initialize the pump pin as an output
  pinMode(pumpPin, OUTPUT);
  
  // Ensure the pump is off initially
  digitalWrite(pumpPin, LOW);
}

void loop() {
  // Read the value from the soil moisture sensor
  int sensorValue = analogRead(sensorPin);
  
  // Print the sensor value to the serial monitor
  Serial.print("Soil Moisture Value: ");
  Serial.println(sensorValue);
  
  // Check if the soil moisture is below the threshold
  if (sensorValue < threshold) {
    // If the soil is dry, turn on the pump
    Serial.println("Soil is dry. Turning on the pump.");
    digitalWrite(pumpPin, HIGH);
  } else {
    // If the soil is wet enough, turn off the pump
    Serial.println("Soil is wet enough. Turning off the pump.");
    digitalWrite(pumpPin, LOW);
  }
  
  // Wait for a short period before taking another reading
  delay(2000); // Delay for 2 seconds
}