config.xhdpi

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Source Code and Pin Mode

Arduino UNO to Bluetooth module PIN Mode : RX pin 10 and TX pin 11.

Code:
#include 
SoftwareSerial mySerial(10, 11); //Pin 10=TX, Pin 11=RX   Bluetooth TX,RX

#define relay1 2 //Relay IN1 connected to PinOut 2 Arduino
#define relay2 3 //Relay IN2 connected to PinOut 3 Arduino
#define relay3 4 //Relay IN3 connected to PinOut 4 Arduino
#define relay4 5 //Relay IN4 connected to PinOut 5 Arduino

char val;
void setup() 
  {
      pinMode(relay1,OUTPUT);
      pinMode(relay2,OUTPUT);
      pinMode(relay3,OUTPUT);
      pinMode(relay4,OUTPUT);
      digitalWrite(relay1,HIGH);
      digitalWrite(relay2,HIGH);
      digitalWrite(relay3,HIGH);
      digitalWrite(relay4,HIGH);
      
      mySerial.begin(9600);
      Serial.begin(9600);
  }

void loop() {//cek data serial from bluetooth android App
if( mySerial.available() >0 ) 
  {
    val = mySerial.read();
    Serial.println(val); 
  }
//Relay is on

/*
--->you can connected to relay modul 4 channel
Serial data sending from Arduino Bluetooth Relay 4CH.apk
data '1'-'4' to on is Ralay CH 1-4
data 'A'-'D' to off is Ralay CH 1-4
data '9' to on ALL CH 1-4
data 'I' to off ALL CH 1-4
*/
if( val == '1' ) 
{
  digitalWrite(relay1,LOW); 
}
else if( val == '2' ) 
{
  digitalWrite(relay2,LOW);  
}
else if( val == '3' ) 
{
  digitalWrite(relay3,LOW); 
}
else if( val == '4' ) 
{
  digitalWrite(relay4,LOW); 
}
//relay all on
else if( val == '9' ) 
    {
        digitalWrite(relay1,LOW);
        digitalWrite(relay2,LOW);
        digitalWrite(relay3,LOW);
        digitalWrite(relay4,LOW);
    }
//relay is off
else if( val == 'A' ) 
{
  digitalWrite(relay1,HIGH); 
}
else if( val == 'B' ) 
{
  digitalWrite(relay2,HIGH); 
}
else if( val == 'C' ) 
{
  digitalWrite(relay3,HIGH); 
}
else if( val == 'D' ) 
{
  digitalWrite(relay4,HIGH); 
}
//relay all off 
else if( val == 'I' ) 
    {
        digitalWrite(relay1,HIGH);
        digitalWrite(relay2,HIGH);
        digitalWrite(relay3,HIGH);
        digitalWrite(relay4,HIGH);
    }

}

Bluetooth Smart Switch

Latest Version of Bluetooth Smart Switch