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f591604497
Published © GPL3+

Bluetooth Car

We use the app of mobile phone to transmit data through Bluetooth to control the the car whiche can move forward, back off, left and right

IntermediateProtip401
Bluetooth Car

Things used in this project

Hardware components

Dual H-Bridge motor drivers L298
SparkFun Dual H-Bridge motor drivers L298
Because the arduino can't driver the motor directly, we need the L298 to drive the motor.
×1
HC-06 Bluetooth Module
×1

Software apps and online services

Bluetooth SPP

Hand tools and fabrication machines

Screwdriver

Story

Read more

Schematics

L298

How to link this.

Code

To set up the hc-06

C/C++
#define AT 2
#define LED 13
void setup()
{
pinMode(LED,OUTPUT);
pinMode(AT,OUTPUT);
digitalWrite(AT,HIGH);
Serial.begin(9600);
delay(100);
Serial.println("AT");
delay(100);
Serial.println("AT+NAME=smart car");
delay(100);
Serial.println("AT+ROLE=S");
delay(100);
Serial.println("AT+PIN=1234");
delay(100);
Serial.println("AT+BAUD=9600");
delay(100);
Serial.println("AT+RMAAD");
void loop()
{
digitalWrite(LED, HIGH);
delay(500);
digitalWrite(LED, LOW);
delay(500);
}

The code that uses the L298 controling the car.

C/C++
#define IN1 4
#define IN2 5
#define IN3 6
#define IN4 7
void forward();
void back();
void turnLeft();
void turnRight();
void turnbackLeft();
void turnbackRight();
void turnLeftOrigin();
void turnRightOrigin();
void _stop();
void setup()
{ pinMode(IN1,OUTPUT);
pinMode(IN2,OUTPUT);
pinMode(IN3,OUTPUT);
pinMode(IN4,OUTPUT);
Serial.begin(9600);
}
int i;
void loop()
{ if(Serial.available())
{ i= Serial.read();
switch(i)
{ case'1':{ turnLeft();break;}
case'2':{ forward();break;}
case'3':{turnRight();break;}
case'4':{turnLeftOrigin();break;}
case'5':{_stop();break;}
case'6':{turnRightOrigin();break;}
case'7':{turnbackLeft();break;}
case'8':{back();break;}
case'9':{turnbackRight();break;}
}
}
}
void forward()
{ digitalWrite(IN1,HIGH);
digitalWrite(IN2,LOW);
digitalWrite(IN3,HIGH);
digitalWrite(IN4,LOW);
}
void back()
{ digitalWrite(IN1,LOW);
digitalWrite(IN2,HIGH);
digitalWrite(IN3,LOW);
digitalWrite(IN4,HIGH);
}
void turnLeft()
{ digitalWrite(IN1,LOW);
digitalWrite(IN2,LOW);
digitalWrite(IN3,HIGH);
digitalWrite(IN4,LOW);
}
void turnbackLeft()
{ digitalWrite(IN1,LOW);
digitalWrite(IN2,LOW);
digitalWrite(IN3,LOW);
digitalWrite(IN4,HIGH);
}
void turnRight()
{ digitalWrite(IN1,HIGH);
digitalWrite(IN2,LOW);
digitalWrite(IN3,LOW);
digitalWrite(IN4,LOW);
}
void turnbackRight()
{ digitalWrite(IN1,LOW);
digitalWrite(IN2,HIGH);
digitalWrite(IN3,LOW);
digitalWrite(IN4,LOW);
}
void turnLeftOrigin()
{ digitalWrite(IN1,LOW);
digitalWrite(IN2,HIGH);
digitalWrite(IN3,HIGH);
digitalWrite(IN4,LOW);
}
void turnRightOrigin()
{ digitalWrite(IN1,HIGH);
digitalWrite(IN2,LOW);
digitalWrite(IN3,LOW);
digitalWrite(IN4,HIGH);
}
void _stop()
{ digitalWrite(IN1,LOW);
digitalWrite(IN2,LOW);
digitalWrite(IN3,LOW);
digitalWrite(IN4,LOW);
}

Credits

f591604497
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