#define POT_PIN A0      // Potensiometr pini
#define RELAY_PIN 2     // Rele boshqaruv pini
#define BUZZER_PIN 3    // Buzzer boshqaruv pini
#define LED_PIN 4       // LED boshqaruv pini

#define UPPER_THRESHOLD 700   // Buzzerni faollashtirish uchun yuqori cheklovi
#define LOWER_THRESHOLD 300   // LED yoqilish uchun past cheklovi

void setup() {
  pinMode(POT_PIN, INPUT);    // Potensiometr pinini kiritish sifatida sozlash
  pinMode(RELAY_PIN, OUTPUT); // Rele boshqaruv pinini chiqish sifatida sozlash
  pinMode(BUZZER_PIN, OUTPUT);// Buzzer boshqaruv pinini chiqish sifatida sozlash
  pinMode(LED_PIN, OUTPUT);   // LED boshqaruv pinini chiqish sifatida sozlash
}
void loop() {
  // Potensiometr qiymatini o'qish
  int potValue = analogRead(POT_PIN);

  // Potensiometr qiymati yuqori cheklovdan baland bo'lsa
  if (potValue > UPPER_THRESHOLD) {
    activateBuzzer();
  } else {
    // Potensiometr qiymati yuqori cheklovdan past bo'lsa, buzzer ni o'chirish
    digitalWrite(BUZZER_PIN, LOW);
  }
  
  // Potensiometr qiymati quyi cheklovdan past  bo'lsa
  if (potValue < LOWER_THRESHOLD) {
    // potensiometr qiymati quyi cheklovdan past bo'lsa, LED ni yoqish
    digitalWrite(LED_PIN, HIGH);
  } else {
    // potensiometr qiymati quyi cheklovdan o'tsa, LED ni o'chirish
    digitalWrite(LED_PIN, LOW);
  }
  
  // Rele ni potensiometr qiymati asosida boshqarish
  if (potValue > 512) {
    // potensiometr qiymati o'rta nuqtasidan yuqori bo'lsa, rele ni faollashtirish
    digitalWrite(RELAY_PIN, HIGH);
  } else {
    // potensiometr qiymati o'rta nuqtasidan past bo'lsa, rele ni o'chirish
    digitalWrite(RELAY_PIN, LOW);
  }
  
  delay(100); // kechiktirish
}

// Buzzerni faollashtirish 
void activateBuzzer() {
  tone(BUZZER_PIN, 1000); // Buzzer ni 1000Hz chastotasi bilan faollashtirish
}