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How To Control Home Appliance From Internet Using Arduino and ESP8266

How To Control Home Appliances From Internet Using Arduino and ESP8266

In this article we are showing how you can control your home appliances from anywhere in world using Internet. In our daily life we always forget to switch off Lights, TV, AC, Fan and other appliances and unnecessary we waste electricity and money of course, which is very precious for us.

So we have created a very simple video that you can follow and convert your normal home to Smart Home and you can control from anywhere in world.

Components Required :-

  1. 1 x Arduino uno board
  2. 1 x USB cable
  3. 1 x ESP8266 WiFi Module
  4. 1 x Relay Board
  5. 1 x Jumper wire (Male to Male)
  6. 9 x Jumper wire (Male to Female)
  7. 1 x Breadboard
  8. 1 x Yellow Bulb
  9. 1 x Red Bulb

Connection :-

Source Code :-

 

#include "SoftwareSerial.h"

String ssid ="WIFI_NAME";
String password="WIFI_PASSWORD";

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

String server = "www.iotboys.com"; //Your Host 
String uri = "/YOUR_API"; // Your 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 {

Serial.println("Cannot connect to wifi ! Connecting again..."); }
connectWifi();

}
/////////////////////////////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=";

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();

int RED_BULB_ON = response.indexOf("RED_BULB>TRUE")>0?1:0;
int YELLOW_BULB_ON = response.indexOf("YELLOW_BULB>TRUE")>0?1:0;

if(RED_BULB_ON==1)
{
  digitalWrite(RED_BULB, LOW);
}
else
{
  digitalWrite(RED_BULB, HIGH);
}
if(YELLOW_BULB_ON==1)
{
  digitalWrite(YELLOW_BULB, LOW);
}
else
{
  digitalWrite(YELLOW_BULB, HIGH);
}
}
esp.println("AT+CIPCLOSE");

}
}
}

void loop() {
  httpget();
}

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