// Define moisture sensor pin
const int moistureSensorPin = A0;

// Define pump pin
const int pumpPin = 9;  // Replace with your pump/solenoid valve pin

// Define moisture threshold values
const int dryThreshold = 700;   // Adjust this value based on your sensor's readings
const int wetThreshold = 300;   // Adjust this value based on your sensor's readings

void setup() {
  pinMode(moistureSensorPin, INPUT);
  pinMode(pumpPin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  int moistureValue = analogRead(moistureSensorPin);
  
  Serial.print("Moisture Value: ");
  Serial.println(moistureValue);

  if (moistureValue > dryThreshold) {
    // Soil is dry, turn on pump
    digitalWrite(pumpPin, HIGH);
    Serial.println("Soil is dry. Turning on pump.");
  } else if (moistureValue < wetThreshold) {
    // Soil is wet, turn off pump
    digitalWrite(pumpPin, LOW);
    Serial.println("Soil is wet. Turning off pump.");
  } else {
    // Soil moisture is optimal
    digitalWrite(pumpPin, LOW);
    Serial.println("Soil moisture is optimal. Pump remains off.");
  }

  delay(1000);  // Wait for 1 second before next reading
}