Android Bluetooth Control With Arduino - Bangla

?? ???? Arduino ???? Android ?? Bluetooth ?? ??????? ???????? Contorl ?????

?? ????? ???? ????????

? ?? Arduino 
? ?? Bluetooth Module 
2/3 ?? LED
?? ??????? ?? ???

????? ??????? ?? ??? ?? ???? Connect ??? ????? ?????? ??? ???? ???? ???? ????? ??? Bluetooth ?? ?????, ?????? LED/Relay ?? Output Connection?
Bluetooth ?? Tx pin arduino ?? Rx pin ? ?? Rx pin Arduino ?? Tx pin ? ????? ???? ???? VCC ??? GND connect ???? ?????? ?????? Bluetooth ?? ??? ????
???? Arduino ?? Digital 3, 5, 6 No pin ? LED/Relay ?? Output ?? Positive (+) ??????? ????? ???? Output ?? ???? ??????? GND ?? ????? ???? ?????? ?????? Connection Complete? 

??? ?????? Code Upload ???? ????...

char blueToothVal;           //value sent over via bluetooth
char lastValue;              //stores last state of device (on/off)

int led = 3;
int ledone = 5;
int ledtwo = 6;

void setup()
{
 Serial.begin(9600); 
 pinMode(led,OUTPUT);
 pinMode(ledone, OUTPUT);
 pinMode(ledtwo, OUTPUT);
}

void loop()
{
  if(Serial.available())
  {//if there is data being recieved
    blueToothVal=Serial.read(); //read it
  }
  if (blueToothVal=='n')
  {//if value from bluetooth serial is n
    digitalWrite(led,HIGH);            //switch on LED
    if (lastValue!='n')
      Serial.println(F("LED is on")); //print LED is on
    lastValue=blueToothVal;
  }
  else if (blueToothVal=='f')
  {//if value from bluetooth serial is n
    digitalWrite(led,LOW);             //turn off LED
    if (lastValue!='f')
      Serial.println(F("LED is off")); //print LED is on
    lastValue=blueToothVal;
  }

  if (blueToothVal=='a')
  {//if value from bluetooth serial is n
    digitalWrite(ledone,HIGH);            //switch on LED
    if (lastValue!='a')
      Serial.println(F("ledone is on")); //print LED is on
    lastValue=blueToothVal;
  }
  else if (blueToothVal=='b')
  {//if value from bluetooth serial is n
    digitalWrite(ledone,LOW);             //turn off LED
    if (lastValue!='b')
      Serial.println(F("ledone is off")); //print LED is on
    lastValue=blueToothVal;
  }

  
  if (blueToothVal=='c')
  {//if value from bluetooth serial is n
    digitalWrite(ledtwo,HIGH);            //switch on LED
    if (lastValue!='c')
      Serial.println(F("ledtwo is on")); //print LED is on
    lastValue=blueToothVal;
  }
  else if (blueToothVal=='d')
  {//if value from bluetooth serial is n
    digitalWrite(ledtwo,LOW);             //turn off LED
    if (lastValue!='d')
      Serial.println(F("ledtwo is off")); //print LED is on
    lastValue=blueToothVal;
  }
  
  delay(1000);
}

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Apps Install ??? ??????? ?? ??? Operate ????...