Bluetooth module

Other Hardware Robotics
1

Is there any PC application that works with Bluetooth module HC-05? I made a Bluetooth controlled car but I only have an IPhone, that is not capable of working with HC-06.

2

Anything that can handle a serial interface. A terminal emulator could connect to Bluetooth Classic.

3

Will i be able to control the car with it? I am a beginner sow I will appreciate if you will describe abit more.

4

Yes. You may not have the graphical interface you might have had with a phone app designed to control a model car, but you will be easily able to send single character commands to the HC05 like 'F' (forward), 'B' (back), 'S'(stop), etc.

Does your PC have built in bluetooth, or are you using a dongle.

5

Yes, I am using a laptop, and I can eaven see HC-05 in the Bluetooth list.

6

Hello guys, i made an arduino Bluetooth controlled car, and the Bluetooth module connects to my HP laptop only while the arduino is connected with cable to my laptop. When I disconnect the cable and turn ON the batteries my laptop sees the Bluetooth model but as soon as I press connect button my Bluetooth module shuts OFF.

7

Verify your power supply is strong enough. The motor driver and the motors use a lot of power and probably draw the power supply to a low level that makes the system stop or restart.

8

I made a Bluetooth controlled car, and I am using serial monitor on my HP laptop, to control it. The problem is I am able to control the car while the arduino is connected manually with my laptop. When I disconnect arduino and try to connect it with Bluetooth it works, my laptop sees it, but I am not being able to control it, it seems like it doesn’t revive the command I type in Serial Monitor.

So when I am typing F while having cable attached they do activate. When I do this without a cable my laptop does see the Bluetooth module, but the motors do not start.

I am using HC-05

IMG_4319
IMG_43191284×1063 265 KB

My code:

char t;
 
void setup() {
pinMode(13,OUTPUT);   //left motors  forward
pinMode(12,OUTPUT);   //left motors reverse
pinMode(11,OUTPUT);   //right  motors forward
pinMode(10,OUTPUT);   //right motors reverse
pinMode(9,OUTPUT);   //Led
Serial.begin(9600);
 
}
 
void loop() {
if(Serial.available()){
  t = Serial.read();
  Serial.println(t);
}
 
if(t == 'F'){            //move  forward(all motors rotate in forward direction)
  digitalWrite(13,HIGH);
  digitalWrite(11,HIGH);
}
 
else if(t == 'B'){      //move reverse (all  motors rotate in reverse direction)
  digitalWrite(12,HIGH);
  digitalWrite(10,HIGH);
}
  
else if(t == 'L'){      //turn right (left side motors rotate in forward direction,  right side motors doesn't rotate)
  digitalWrite(11,HIGH);
}
 
else  if(t == 'R'){      //turn left (right side motors rotate in forward direction, left  side motors doesn't rotate)
  digitalWrite(13,HIGH);
}

else if(t ==  'W'){    //turn led on or off)
  digitalWrite(9,HIGH);
}
else if(t == 'w'){
  digitalWrite(9,LOW);
}
 
else if(t == 'S'){      //STOP (all motors stop)
  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
}
delay(100);
}
9
  1. Refrain from starting multiple topics with the same subject.
  2. Respond to the assistance when you receive them.

Delete this topic, and continue with your other topic...

10

Sorry, but it says I have no permission. I would still appreciate if you gave the answer for my problem :sweat_smile:

11

The answer is: Click on the "flag" in your message, scroll to the bottom, select "Other" and enter: "I have created multiple topics with the same subject. Please, find and merge or delete the least used topics." >> SUBMIT <<

You are putting 5vdc from the motor driver into Arduino Vin, which wants 7.5vdc.

Once you have the wire in the correct socket... your power supply is not strong enough. The four batteries you show equate to 6vdc. The motor driver will take all the power it wants, first, leaving 4.5vdc for the motors, bluetooth and Arduino. The motors will take the next bit of power remaining, dropping the voltage more, shutting down the Arduino. Use a suitable power supply that has 5vdc remaining for the Arduino AFTER the motor driver and motors have taken their amount.

12

I merged the topics as requested.

Carry on.

13

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