#include <Arduino.h>

#define PIR_SIGNAL_PIN 0    // Digital pin for motion detection
#define PIR_ADC_MONITOR A4    // ADC pin to monitor VCC voltage
#define THRESHOLD_VCC 1000     // ADC threshold for VCC disconnection (adjust as needed)

void setup() {
  pinMode(PIR_SIGNAL_PIN, INPUT); // PIR output pin
  Serial.begin(115200);
}

void loop() {
  // Read PIR motion detection signal
  int pirState = digitalRead(PIR_SIGNAL_PIN);

  // Read PIR VCC voltage level
  int vccValue = analogRead(PIR_ADC_MONITOR);

  // Check if VCC is disconnected
  if (vccValue < THRESHOLD_VCC) {
    Serial.println("⚠️ PIR VCC Wire Disconnected!");
  } 
  // Check PIR motion detection
  else if (pirState == HIGH) {
    Serial.println("🚶 Motion Detected!");
  } 
  else {
    Serial.println("🛑 No Motion");
  }

  delay(500);
}