#define BLYNK_TEMPLATE_ID "TMPL5vIAZwp1z"
#define BLYNK_TEMPLATE_NAME "Smart Security System"
#define BLYNK_AUTH_TOKEN "xUgaIijEvwPjyA0JY16JmpQN15gClluY"
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
char ssid[] = "WIFI_NAME";
char pass[] = "WIFI_PASSWORD";
#define PIR_PIN 5
#define LDR_PIN 34
#define LED_PIN 2
BlynkTimer timer;
int readings[10];
int idx = 0;
int motionCount = 0;
void sendToBlynk() {
  int motion = digitalRead(PIR_PIN);
  int lightLevel = analogRead(LDR_PIN);
  // moving average buffer
  readings[idx] = lightLevel;
  idx = (idx + 1) % 10;
  int sum = 0;
  for (int i = 0; i < 10; i++) {
    sum += readings[i];
  }
  int threshold = sum / 10;
  // motion logic
  if (motion == HIGH) {
    motionCount++;
  } else {
    motionCount = 0;
  }
  bool highRisk = (motionCount >= 3 && lightLevel < threshold);
  // LED control
  digitalWrite(LED_PIN, highRisk ? HIGH : LOW);
  // Send to Blynk
  Blynk.virtualWrite(V0, motion);
  Blynk.virtualWrite(V1, lightLevel);
  // Optional debug
  Serial.print("Motion: ");
  Serial.print(motion);
  Serial.print(" | Light: ");
  Serial.print(lightLevel);
  Serial.print(" | Threshold: ");
  Serial.println(threshold);
  // OPTIONAL: Push notification (if enabled in Blynk)
  if (highRisk) {
    Blynk.logEvent("intrusion_alert", "HIGH RISK: Motion detected in low light!");
  }
}
void setup() {
  Serial.begin(115200);
  pinMode(PIR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  // initialize buffer
  for (int i = 0; i < 10; i++) {
    readings[i] = analogRead(LDR_PIN);
  }
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  timer.setInterval(300L, sendToBlynk);
}
void loop() {
  Blynk.run();
  timer.run();
}
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