Using HC-05 for Master-Slave connection [Solved]

[peter_war]

Hi Guys, this my first time using the HC-05 module. I am trying to start off with a simple program that I found on youtube where, on the master node, when I press the push button, the LED on the slave node should turn. I followed the code and circuit connection as the youtube video but my LED on the slave node is not turning on. I have already used the AT command to set as master and slave and bind them.

Any help would be much appreciated, thanks.

This is my code for Master:

#define button 9
#define led 13

void setup() {
  pinMode(button, INPUT);
  pinMode(led, OUTPUT);
  Serial.begin(9600); 
}

void loop() {
 int bState = digitalRead(button);
 if (bState == LOW){
 digitalWrite(led,HIGH);
 Serial.write('1');
 delay(20);
 } 
 else {
 digitalWrite(led,LOW);
 Serial.write('2');
 delay(20);
 }
}

Slave Code:

char Incoming_value = 0;                //Variable for storing Incoming_value
void setup() 
{
  Serial.begin(9600);         //Sets the data rate in bits per second (baud rate) for serial data transmission
  pinMode(7, OUTPUT);        //Sets digital pin 7 as output pin
  Serial.println("Hello");
}
void loop()
{
  if(Serial.available() > 0)  
  {
    Serial.println("I am receiving");
    Incoming_value = Serial.read();      //Read the incoming data and store it into variable Incoming_value
    Serial.println(Incoming_value);
    if(Incoming_value == '1')            //Checks whether value of Incoming_value is equal to A
    {
      digitalWrite(7, HIGH);  
    }
    else if(Incoming_value == '2')
    {
      digitalWrite(7, LOW);
    }   
  }                            
 
}                 

By the way, this the output I am getting on my slave node.

[Railroader]

You get text out when doing Seria.print meaning Serial is using the USB. From where do You read the wire,ess?

Which controller? Schematics please.

[groundFungus]

@peter_war

Serial.begin(9600);

Is serial monitor set to the same baud rate?

I tried the code on my Uno and I get the expected result. LED on with '1' and off with '2'.

I am receiving
1
I am receiving
2
I am receiving
1
I am receiving
2

To prevent the serial monitor to send extraneous characters, set Line Endings to "No line ending" in serial monitor.