Sample code for Bluetooth communication.

[Ido-Sobol]

HC05 Configuration:

 

#include <SoftwareSerial.h>

#define tx 2

#define rx 3

SoftwareSerial configBt(rx, tx); // RX, TX

void setup() 

{

  Serial.begin(38400);

  configBt.begin(38400);

  pinMode(tx, OUTPUT);

  pinMode(rx, INPUT);

}

void loop() 

{

  if(configBt.available()) //if the bluetooth module is sending something...

  {

    Serial.print(configBt.readString()); //print whatever the bluetooth module is sending 

  }

   

  if(Serial.available()) //if we have typed anything into the serial monitor input text box...

  {

    configBt.write(Serial.read()); //write whatever we typed into the serial monitor input text box to the bluetooth module

  }

}

 

 

Receiver:

 

#include <SoftwareSerial.h>

#define tx 2

#define rx 3

SoftwareSerial bt(rx, tx); //RX, TX

void setup()

{

  Serial.begin(9600);

  bt.begin(9600);

  pinMode(tx, OUTPUT);

  pinMode(rx, INPUT);

}

void loop()

{

  if(bt.available()>0)

  {

    Serial.println(bt.read());

  }

}

 

 

Sender:

 

#include <SoftwareSerial.h>

#define tx 2

#define rx 3

SoftwareSerial bt(rx,tx); //RX, TX

void setup() 

{

  Serial.begin(9600);

  bt.begin(9600);

  pinMode(tx, OUTPUT);

  pinMode(rx, INPUT);

}

void loop() 

{

  bt.write(123);