SMART DOOR ALARM

Coding

Using the code mentioned below in Arduino IDE and replacing auth token with the one  received on the mail and replacing wifi sssid and password with ours

#define BLYNK_PRINT Serial

#include <ESP8266WiFi.h>

#include <BlynkSimpleEsp8266.h>

#define  trig  D2

#define  echo  D1

long duration;

int distance;

// You should get Auth Token in the Blynk App.

char auth[] = "DY1JTYEC9yy0_qEhGvWjcCI8BU8KMImh";

// Your WiFi credentials.

// Set password to "" for open networks.

char ssid[] = "Honor 7X";

char pass[] = "shuvamgupta";

BlynkTimer timer;

void setup()

{

  // Debug console

  pinMode(trig, OUTPUT);  // Sets the trigPin as an Output

  pinMode(echo, INPUT);   // Sets the echoPin as an Input

  Serial.begin(9600);

  Blynk.begin(auth, ssid, pass);

  // Setup a function to be called every second

  timer.setInterval(1000L, sendSensor);

}

void loop()

{

  Blynk.run();

  timer.run();

}

void sendSensor()

{

  digitalWrite(trig, LOW);   // Makes trigPin low

  delayMicroseconds(2);       // 2 micro second delay

  digitalWrite(trig, HIGH);  // tigPin high

  delayMicroseconds(10);      // trigPin high for 10 micro seconds

  digitalWrite(trig, LOW);   // trigPin low

  duration = pulseIn(echo, HIGH);   //Read echo pin, time in microseconds

  distance = duration * 0.034 / 2;   //Calculating actual/real distance

  Serial.print("Distance = ");        //Output distance on arduino serial monitor

  Serial.println(distance);

  if(distance <= 76)

  {

    Blynk.email("shivamrash1991@gmail.com",

    "Alert!!", "DOOR OPENED");

    Blynk.notify("ALERT! STORE DOOR OPENED");

  }

  Blynk.virtualWrite(V0, distance);

  delay(1000);                        //Pause for 3 seconds and start measuring distance again

}

After using code connect the node mcu using micro usb cable and click on upload to verify and upload the code to node-mcu.

After successfully embedding the code the device will appear online on blynk app.

Now, test the device whether its running or not.

After successful test solder the board and sensor using iron and solder material and fix the device on back wall of the door.