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

Jan 10, 2018

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toys

cars

robots

Components and supplies

Dual H-Bridge motor drivers L298

HC-06 Bluetooth Module

Tools and machines

Screwdriver

Apps and platforms

Bluetooth SPP

Project description

Code

The code that uses the L298 controling the car.

c_cpp

1#define IN1 4
2#define IN2 5
3#define IN3 6
4#define IN4 7
5void   forward();
6void back();
7void turnLeft();
8void turnRight();
9void turnbackLeft();
10void   turnbackRight();
11void turnLeftOrigin();
12void turnRightOrigin();
13void _stop();
14void   setup()
15{ pinMode(IN1,OUTPUT);
16pinMode(IN2,OUTPUT);
17pinMode(IN3,OUTPUT);
18pinMode(IN4,OUTPUT);
19Serial.begin(9600);
20}
21int   i;
22void loop()
23{ if(Serial.available())
24{ i= Serial.read();
25switch(i)
26{   case'1':{ turnLeft();break;}
27case'2':{ forward();break;}
28case'3':{turnRight();break;}
29case'4':{turnLeftOrigin();break;}
30case'5':{_stop();break;}
31case'6':{turnRightOrigin();break;}
32case'7':{turnbackLeft();break;}
33case'8':{back();break;}
34case'9':{turnbackRight();break;}
35}
36}
37}
38void   forward()
39{ digitalWrite(IN1,HIGH);
40digitalWrite(IN2,LOW);
41digitalWrite(IN3,HIGH);
42digitalWrite(IN4,LOW);
43}
44void   back()
45{ digitalWrite(IN1,LOW);
46digitalWrite(IN2,HIGH);
47digitalWrite(IN3,LOW);
48digitalWrite(IN4,HIGH);
49}
50void   turnLeft()
51{ digitalWrite(IN1,LOW);
52digitalWrite(IN2,LOW);
53digitalWrite(IN3,HIGH);
54digitalWrite(IN4,LOW);
55}
56void   turnbackLeft()
57{ digitalWrite(IN1,LOW);
58digitalWrite(IN2,LOW);
59digitalWrite(IN3,LOW);
60digitalWrite(IN4,HIGH);
61}
62void   turnRight()
63{ digitalWrite(IN1,HIGH);
64digitalWrite(IN2,LOW);
65digitalWrite(IN3,LOW);
66digitalWrite(IN4,LOW);
67}
68void   turnbackRight()
69{ digitalWrite(IN1,LOW);
70digitalWrite(IN2,HIGH);
71digitalWrite(IN3,LOW);
72digitalWrite(IN4,LOW);
73}
74void   turnLeftOrigin()
75{ digitalWrite(IN1,LOW);
76digitalWrite(IN2,HIGH);
77digitalWrite(IN3,HIGH);
78digitalWrite(IN4,LOW);
79}
80void   turnRightOrigin()
81{ digitalWrite(IN1,HIGH);
82digitalWrite(IN2,LOW);
83digitalWrite(IN3,LOW);
84digitalWrite(IN4,HIGH);
85}
86void   _stop()
87{ digitalWrite(IN1,LOW);
88digitalWrite(IN2,LOW);
89digitalWrite(IN3,LOW);
90digitalWrite(IN4,LOW);
91}

#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);
}

To set up the hc-06

c_cpp

1#define AT 2
2#define LED 13
3void setup()
4{
5pinMode(LED,OUTPUT);
6pinMode(AT,OUTPUT);
7digitalWrite(AT,HIGH);
8Serial.begin(9600);
9delay(100);
10Serial.println("AT");
11delay(100);
12Serial.println("AT+NAME=smart  car");
13delay(100);
14Serial.println("AT+ROLE=S");
15delay(100);
16Serial.println("AT+PIN=1234");
17delay(100);
18Serial.println("AT+BAUD=9600");
19delay(100);
20Serial.println("AT+RMAAD");
21void  loop()
22{
23digitalWrite(LED, HIGH);
24delay(500);
25digitalWrite(LED, LOW);
26delay(500);
27}

#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_cpp

1#define IN1 4
2#define IN2 5
3#define IN3 6
4#define IN4 7
5void  forward();
6void back();
7void turnLeft();
8void turnRight();
9void turnbackLeft();
10void  turnbackRight();
11void turnLeftOrigin();
12void turnRightOrigin();
13void _stop();
14void  setup()
15{ pinMode(IN1,OUTPUT);
16pinMode(IN2,OUTPUT);
17pinMode(IN3,OUTPUT);
18pinMode(IN4,OUTPUT);
19Serial.begin(9600);
20}
21int  i;
22void loop()
23{ if(Serial.available())
24{ i= Serial.read();
25switch(i)
26{  case'1':{ turnLeft();break;}
27case'2':{ forward();break;}
28case'3':{turnRight();break;}
29case'4':{turnLeftOrigin();break;}
30case'5':{_stop();break;}
31case'6':{turnRightOrigin();break;}
32case'7':{turnbackLeft();break;}
33case'8':{back();break;}
34case'9':{turnbackRight();break;}
35}
36}
37}
38void  forward()
39{ digitalWrite(IN1,HIGH);
40digitalWrite(IN2,LOW);
41digitalWrite(IN3,HIGH);
42digitalWrite(IN4,LOW);
43}
44void  back()
45{ digitalWrite(IN1,LOW);
46digitalWrite(IN2,HIGH);
47digitalWrite(IN3,LOW);
48digitalWrite(IN4,HIGH);
49}
50void  turnLeft()
51{ digitalWrite(IN1,LOW);
52digitalWrite(IN2,LOW);
53digitalWrite(IN3,HIGH);
54digitalWrite(IN4,LOW);
55}
56void  turnbackLeft()
57{ digitalWrite(IN1,LOW);
58digitalWrite(IN2,LOW);
59digitalWrite(IN3,LOW);
60digitalWrite(IN4,HIGH);
61}
62void  turnRight()
63{ digitalWrite(IN1,HIGH);
64digitalWrite(IN2,LOW);
65digitalWrite(IN3,LOW);
66digitalWrite(IN4,LOW);
67}
68void  turnbackRight()
69{ digitalWrite(IN1,LOW);
70digitalWrite(IN2,HIGH);
71digitalWrite(IN3,LOW);
72digitalWrite(IN4,LOW);
73}
74void  turnLeftOrigin()
75{ digitalWrite(IN1,LOW);
76digitalWrite(IN2,HIGH);
77digitalWrite(IN3,HIGH);
78digitalWrite(IN4,LOW);
79}
80void  turnRightOrigin()
81{ digitalWrite(IN1,HIGH);
82digitalWrite(IN2,LOW);
83digitalWrite(IN3,LOW);
84digitalWrite(IN4,HIGH);
85}
86void  _stop()
87{ digitalWrite(IN1,LOW);
88digitalWrite(IN2,LOW);
89digitalWrite(IN3,LOW);
90digitalWrite(IN4,LOW);
91}

#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);
}

Downloadable files

L298

How to link this.

L298

How to link this.

L298

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