#define POT_PIN 34   // Potentiometer middle pin -> GPIO34 (ADC1)
#define LED_PIN 2    // LED connected to GPIO2
#define BUZZER_PIN 4 // Buzzer connected to GPIO4

int lastValue = 0;
int threshold = 200;  // Sensitivity for tamper detection

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
}

void loop() {
  int sensorValue = analogRead(POT_PIN);  // Read pot value (0–4095 for ESP32)
  Serial.println(sensorValue);

  // Check for tampering: sudden change in weight
  if (abs(sensorValue - lastValue) > threshold) {
    Serial.println("⚠️ Tampering Detected!");
    digitalWrite(LED_PIN, HIGH);   // Turn LED ON
    digitalWrite(BUZZER_PIN, HIGH); // Buzzer ON
    delay(1000);                   
  } else {
    digitalWrite(LED_PIN, LOW);    // LED OFF
    digitalWrite(BUZZER_PIN, LOW); // Buzzer OFF
  }

  lastValue = sensorValue;  // Update previous value
  delay(200);
}