Control Home Lights Using Facebook Chat Messages

Controlling Home Lights using Facebook Chat messages with the help of Arduino, ESP8266 WiFi and a relay board.

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Control Home Lights Using Facebook Chat Messages

Things used in this project

Hardware components

Arduino UNO

Relay (generic)

Espressif ESP8266 ESP-01

Breadboard (generic)

Jumper wires (generic)

AC Bulb

Two Bulb Red and Yellow

Software apps and online services

Arduino IDE

Facebook Chat

Story

We are showing how you can control your home appliances e.g. TV, fan, refrigerator, lights, etc. through Facebook chat messages with the help of an Arduino Uno and ESP8266 WiFi module.

You just need to send instructions like “Red bulb on," "TV on," or "Room no.1 fan off” in chat and it will control your appliances based this instruction. We are controlling two AC bulbs (red and yellow) for demo purposes, but you can extend functionality in the same manner and can control any appliance in your home. To accomplish this project, we are using Facebook Graph API to communicate with messages and we've created a middle ware in .NET MVC Web API which is responsible for getting the instruction from Facebook Graph API and transferring it to Arduino.

Detail description available on www.iotboys.com

Middle ware .NET code is available on our website www.iotboys.com and also in our Github repository name as "iotboys" .

Visit www.iotboys.com for more attractive projects.

Code

Source Code

#include "SoftwareSerial.h"

String ssid = "YOUR_SSID";
String password = "YOUR_WIFI_PASSWORD";

SoftwareSerial esp(3, 2);// RX, TX

String server = "www.iotboys.com"//YOUR_MIDDLE_WARE;
String uri = "/api/FacebookAutomation/ProcessCommand";//YOUR MIDDLE WARE URI

int RED_BULB = 5;
int YELLOW_BULB = 6;

void setup() {

  pinMode(RED_BULB, OUTPUT);
  pinMode(YELLOW_BULB, OUTPUT);

  digitalWrite(RED_BULB, HIGH);
  digitalWrite(YELLOW_BULB, HIGH);
  esp.begin(9600);

  Serial.begin(9600);

  connectWifi();

  httpget();

  delay(1000);

}
void connectWifi() {

  String cmd = "AT+CWJAP=\"" + ssid + "\",\"" + password + "\"";

  esp.println(cmd);

  delay(4000);

  if (esp.find("OK")) {

    Serial.println("Connected!");

  }

  else {

    connectWifi();

    Serial.println("Cannot connect to wifi");
  }

}
/////////////////////////////GET METHOD///////////////////////////////

void httpget() {
  esp.println("AT+CIPSTART=\"TCP\",\"" + server + "\",80");//start a TCP connection.

  if ( esp.find("OK")) {

    Serial.println("TCP connection ready");

  } delay(1000);

  String getRequest =
    "GET " + uri + " HTTP/1.0\r\n" +
    "Host: " + server + "\r\n" +
    "Accept: *" + "/" + "*\r\n" +
    "Content-Type: application/json\r\n" +
    "\r\n";

  String sendCmd = "AT+CIPSEND=";//determine the number of caracters to be sent.

  esp.print(sendCmd);

  esp.println(getRequest.length() );

  delay(500);

  if (esp.find(">")) {
    Serial.println("Sending..");
    esp.print(getRequest);

    if ( esp.find("SEND OK")) {

      Serial.println("Packet sent");

      while (esp.available()) {

        String response = esp.readString();

        Serial.println(response);
       
        if (response.indexOf("RED BULB ON") > 0)
        {
          digitalWrite(RED_BULB, LOW);
        }
        else if (response.indexOf("RED BULB OFF") > 0)
        {
          digitalWrite(RED_BULB, HIGH);
        }
        else if (response.indexOf("YELLOW BULB ON") > 0)
        {
          digitalWrite(YELLOW_BULB, LOW);
        }
        else if (response.indexOf("YELLOW BULB OFF") > 0)
        {
          digitalWrite(YELLOW_BULB, HIGH);
        }
        else if (response.indexOf("ALL ON") > 0)
        {
          digitalWrite(RED_BULB, LOW);
          digitalWrite(YELLOW_BULB, LOW);
        }
        else if (response.indexOf("ALL OFF") > 0)
        {
          digitalWrite(RED_BULB, HIGH);
          digitalWrite(YELLOW_BULB, HIGH);
        }

      }
      // close the connection
      esp.println("AT+CIPCLOSE");

    }
  }
}

void loop() {
  httpget();
}