pir Home Security System with Motion Detection Nodemcu iot

 

Home Security System with Motion Detection 🏡🔔

Components:

• ESP8266 (NodeMCU)

• PIR Motion Sensor

• Buzzer

• Email Alert

Circuit:

• PIR Motion Sensor:

  • VCC → 5V

  • GND → GND

  • OUT → D1

Code:

cpp
#include <ESP8266WiFi.h>
#include <ESP8266SMTP.h>

const char *ssid = "your-SSID";
const char *password = "your-PASSWORD";

const char *smtp_server = "smtp.gmail.com";
const char *email_sender = "youremail@gmail.com";
const char *email_receiver = "receiveremail@gmail.com";
const char *email_subject = "Motion Detected!";
const char *email_message = "Motion has been detected in the house.";

int pirPin = D1;
int buzzerPin = D2;

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  pinMode(pirPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi!");
}

void loop() {
  int motion = digitalRead(pirPin);
  if (motion == HIGH) {
    digitalWrite(buzzerPin, HIGH);  // Activate the buzzer
    sendEmailAlert();
    delay(10000);  // Wait for 10 seconds before checking again
  } else {
    digitalWrite(buzzerPin, LOW);  // Deactivate the buzzer
  }
}

void sendEmailAlert() {
  SMTPClient smtp;
  smtp.setServer(smtp_server);
  smtp.setSender(email_sender);
  smtp.setRecipient(email_receiver);
  smtp.setSubject(email_subject);
  smtp.setMessage(email_message);
  if (!smtp.send()) {
    Serial.println("Error sending email!");
  } else {
    Serial.println("Email sent successfully.");
  }
}