Smartphone Proximity IOT

 IOT  (Controlling a relay with Smartphone Proximity sensor and Blynk App)

#define BLYNK_PRINT Serial

#include <ESP8266WiFi.h>

#include <BlynkSimpleEsp8266.h>

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

// Go to the Project Settings (nut icon).

char auth[] = "xGtkkxzmpdsHvdmWXiw4_9f97y-yT8dU";

// Your WiFi credentials.

// Set password to "" for open networks.

char ssid[] = "dewa406";

char pass[] = "Ramesh16384";

void setup()

{

  // Debug console

  Serial.begin(9600);

pinMode(D1,OUTPUT);

pinMode(LED_BUILTIN,OUTPUT);

  Blynk.begin(auth, ssid, pass);

  // You can also specify server:

  //Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 80);

  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);

}

void loop()

{

  Blynk.run();

}

BLYNK_WRITE(V1)

{

  int proximity=param.asInt();

  if(proximity)

  {

    digitalWrite(D1,HIGH);

    digitalWrite(LED_BUILTIN,LOW);

  }

  else

  {

    digitalWrite(D1,LOW);

    digitalWrite(LED_BUILTIN,HIGH);

  }

}