#include <Servo.h>

// Define buzzer pin, potentiometer pin, servo motor pin
const int buzzerPin = 8;
const int potentiometerPin = A0;
const int servoMotorPin = 11;

// Servo motor object
Servo servoMotor;

// Setup function
void setup() {
  pinMode(buzzerPin, OUTPUT);
  pinMode(potentiometerPin, INPUT);
  pinMode(servoMotorPin, OUTPUT);
  servoMotor.attach(servoMotorPin);
  servoMotor.write(0);
}

// Loop function
void loop() {
  int potentiometerValue = analogRead(potentiometerPin);
  int frequency = map(potentiometerValue, 0, 1023, 200, 2000);
  // Check if the moisture level is low
  if (potentiometerValue < 100) {
    tone(buzzerPin, 300);//play frequency tone
    servoMotor.write(90);//turn on servometer
  } else {
    noTone(buzzerPin);//turn off the buzzer
    servoMotor.write(0);//turn off the servometer
  }
  delay(100);//play the tone
}