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Topic: Bluetooth module HC-06 signals not read by android phone app? (Read 1 time) previous topic - next topic

robodoc99



My android phone is not picking up the bluetooth hc-06 module signals what could be wrong since I have checked the connections and nothing seems to be odd.

I am using a bi-logic voltage adopter on a board tx-rx, rx-tx connection to the arduino uno and motor shield connected to the arduino ,

Code used:
#include <AFMotor.h>

AF_DCMotor motor2(2, MOTOR12_64KHZ); // create motor #2, 64KHz pwm
AF_DCMotor motor1(1, MOTOR12_64KHZ);
int state = 0;

void setup() <br>{
  Serial.begin(9600);           // set up Serial library at 9600 bps
  Serial.println("Welcome: Forward = 1 Left = 2 Right = 3 Backwards = 4 Stop = 0");
  motor2.setSpeed(200);     // set the speed to 200
  motor1.setSpeed(200);     // set the speed to 200
}

void loop(){   //if some data is sent, read it and save it in the state variable

if(Serial.available() > 0)
  {
    state = Serial.read();
    Serial.print("I received: ");
    Serial.println(state);
    delay(10);</p>
if (state == '0')
    {
      motor2.setSpeed(200);     // set the speed to 200/255
      motor1.setSpeed(200);     // set the speed to 200/255
      motor2.run(RELEASE);      // turn it on going forward
      motor1.run(RELEASE);      // turn it on going forward
      Serial.println("Stopped");
      delay(100);
      state = 0;
    }
else if (state == '1')      // If 1 Forwards
    {
      motor2.run(RELEASE);      // turn it on going forward
      motor1.run(RELEASE);      // turn it on going forward
      motor2.setSpeed(200);     // set the speed to 200
      motor1.setSpeed(200);     // set the speed to 200
      motor2.run(FORWARD);      // turn it on going forward
      motor1.run(FORWARD);      // turn it on going forward
      Serial.println("Forward");
      delay(100);
      state = 0;
    }
else if (state == '2')      // If 2 Turn Left
    {
      motor2.run(RELEASE);      // turn it on going forward
      motor1.run(RELEASE);      // turn it on going forward 
      motor1.setSpeed(255);     // set the speed to 200/255
      motor1.run(FORWARD);
      //motor2.run(BACKWARD);     
      Serial.println("Left");
      delay(100);
      state = 0;     
    }
else if (state == '3') {    // If 3 Turn Right
      motor2.run(RELEASE);      // turn it on going forward
      motor1.run(RELEASE);      // turn it on going forward
      motor2.setSpeed(255);     // set the speed to 255
      motor2.run(FORWARD);     
      //motor1.run(BACKWARD);   
      Serial.println("Right");
      delay(100);
      state = 0; 
    }
else if (state == '4')       // If 4 Backwards
    {
      motor2.run(RELEASE);      // turn it on going forward
      motor1.run(RELEASE);      // turn it on going forward
      motor2.setSpeed(200);      // set the speed to 200
      motor1.setSpeed(200);      // set the speed to 200
      motor2.run(BACKWARD);      // Motor 2 backwards
      motor1.run(BACKWARD);      // Motor 1 backwards
      Serial.println("Backward");
      delay(100);
      state = 0;   
    }
else if (state == '5')
    {
      motor2.run(RELEASE);      // turn it on going release
      motor1.run(RELEASE);      // turn it on going release
      motor2.setSpeed(255);     // set the speed to 255
      motor1.setSpeed(140);     // set the speed to 140
      motor2.run(FORWARD);      // Motor 2 forward
      motor1.run(FORWARD);      // Motor 1 forward
      Serial.println("Forward Right");
      delay(100);
      state = 0;   
     }
else if (state == '6')
    {
      motor2.run(RELEASE);      // turn it on going release
      motor1.run(RELEASE);      // turn it on going release
      motor1.setSpeed(255);     // set the speed to 255
      motor2.setSpeed(140);     // set the speed to 140
      motor2.run(FORWARD);      // Motor 2 forward
      motor1.run(FORWARD);      // Motor 1 forward
      Serial.println("Forward Left");
      delay(100);
      state = 0;   
     }
else if (state == '7')       // If 4 Backwards
    {
      motor2.run(RELEASE);      // turn it on going forward
      motor1.run(RELEASE);      // turn it on going forward
      motor1.setSpeed(255);     // set the speed to 255
      motor2.setSpeed(140);     // set the speed to 140
      motor2.run(BACKWARD);      // Motor 2 backwards
      motor1.run(BACKWARD);      // Motor 1 backwards
      Serial.println("Backward Right");
      delay(100);
      state = 0;   
    }
else if (state == '8')       // If 4 Backwards
    {
      motor2.run(RELEASE);      // turn it on going forward
      motor1.run(RELEASE);      // turn it on going forward
      motor2.setSpeed(255);     // set the speed to 255
      motor1.setSpeed(140);     // set the speed to 140
      motor2.run(BACKWARD);      // Motor 2 backwards
      motor1.run(BACKWARD);      // Motor 1 backwards
      Serial.println("Backward Left");
      delay(100);
      state = 0;   
    }
else if (state >= '9')
    {
      Serial.println("Invalid");
      delay(100);
      state = 0;
    }
  }
}
<br>

Vulcan666

Is it possible that your rx and tx need to be switched?  On the Bluetooth module, is a red led blinking?  If it is i'm not sure what's wrong.  If its not it doesn't have any power.  Is Bluetooth turned on on your device?

Hope one of this questions answers your problems.

robodoc99

Image:  http://imgur.com/pi40YnL
Hi the red light is not turned on so it is a power issue I have looked at the connections they seem to be fine.
I wonder if the issue stems form the pins from the motorshield and cables form the bluetooth share the same slots?
 Due to the fact there is no space once the shield is connected to the arduino

Vulcan666

Um, I'm not sure about that either.  You could try seeing if it would work without the shield, if it does, you know it's something wrong with the shield or the shield connections.  If it doesn't, and your pins are working and it's connected right, your module is probably toast.

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