PROJECTS AND PRODUCTS: Simple Home Automation Using Bluetooth Module
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Sunday, October 21, 2018

Simple Home Automation Using Bluetooth Module

October 21, 2018 42 comments :

Simple Home Automation Using Bluetooth, Android and Arduino

Take control of your home in your smart-phone with the simplest ever home automation device.

The Code:-


String voice;
#define relay1 2    //Connect relay1 to pin 2
#define relay2 3    //Connect relay2 to pin 3
#define relay3 7   //Connect relay1 to pin 2
#define relay4 8    //Connect relay2 to pin 3
void setup()
{
  Serial.begin(9600);            //Set rate for communicating with phone
  pinMode(relay1, OUTPUT);       //Set relay1 as an output
  pinMode(relay2, OUTPUT);
  pinMode(relay3, OUTPUT);      //Set relay2 as an output
  pinMode(relay4, OUTPUT);
  digitalWrite(relay1, LOW);     //Switch relay1 off
  digitalWrite(relay2, LOW);     //Swtich relay2 off
  digitalWrite(relay3, LOW);     //Switch relay1 off
  digitalWrite(relay4, LOW);     //Swtich relay2 off
}
void loop()
{
  while(Serial.available())    //Check if there are available bytes to read
  {
    delay(10);                 //Delay to make it stable
    char c = Serial.read();    //Conduct a serial read
    if (c == '#'){
      break;                   //Stop the loop once # is detected after a word
    }
    voice += c;                //Means voice = voice + c
  }
    if (voice.length() >0)
    {
      Serial.println(voice);
      if(voice == "*switch on"){
        switchon();
      }               
      else if(voice == "*switch off"){
        switchoff();
      }             
      else if(voice == "*bulb1 on"){   
        digitalWrite(relay1, LOW);
      }
      else if(voice == "*bulb1 off"){
        digitalWrite(relay1, HIGH);
      }
       else if(voice == "*bulb2 on"){   
        digitalWrite(relay2, LOW);
      }
      else if(voice == "*bulb2 off"){
        digitalWrite(relay2, HIGH);
      }
       else if(voice == "*fan1 on"){   
        digitalWrite(relay3, LOW);
      }
      else if(voice == "*fan1 off"){
        digitalWrite(relay3, HIGH);
      }
      else if(voice == "*fan2 on"){
        digitalWrite(relay4, LOW);
      }
      else if(voice == "*fan2 off"){
        digitalWrite(relay4, HIGH);
      }
      voice="";
    }
}
void switchon()               //Function for turning on relays
{
  digitalWrite(relay1, LOW);
  digitalWrite(relay2, LOW);
  digitalWrite(relay3, LOW);
  digitalWrite(relay4, LOW);
}
void switchoff()              //Function for turning on relays
{
  digitalWrite(relay1, HIGH);
  digitalWrite(relay2, HIGH);
  digitalWrite(relay3, HIGH);
  digitalWrite(relay4, HIGH);
}

MOBILE APP:-

If you don't know how to make android application then click the link below.
https://www.youtube.com/watch?v=dWKam0eekhU&t=1s


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