Bluetooth Controlled Robot Car

Ever wanted to make one yourself? controlled by your own smartphone? This is for you.

Jun 3, 2021

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1 respects

bluetoothcontrolled

toycar

robot car

Components and supplies

Dual H-Bridge motor drivers L298

Jumper wires (generic)

9V battery (generic)

Maker Essentials - Micro-motors & Grippy Wheels

Arduino UNO

HC-05 Bluetooth Module

Project description

Code

c_cpp

Here is the project code

1int lmp1=4, lmp2=5, rmp1=2, rmp2=3;
2char incomingData;
3#include   "function.h"
4void setup() {
5  Serial.begin(9600);
6  pinMode(2,OUTPUT);
7   pinMode(3,OUTPUT);
8  pinMode(4,OUTPUT);
9  pinMode(5,OUTPUT);
10  
11}
12
13void   loop() {
14  if(Serial.available()>0){
15    incomingData = Serial.read();
16     if(incomingData == 'F'){
17      Serial.print("For");
18      goForward();
19       delay(500);
20      stopCar();
21    }
22    else if(incomingData == 'B'){
23       goBackward();
24      delay(500);
25      stopCar();
26    }
27    else   if(incomingData == 'L'){
28      leftTurn();
29      delay(500);
30      stopCar();
31     }
32    else if(incomingData == 'R'){
33      rightTurn(); 
34      delay(500);
35       stopCar();
36    }
37    else if(incomingData == 'X'){;
38      stopCar();
39     }
40    else if(incomingData == 'Y'){
41      stopCar();
42    }
43   
44   }
45  
46
47}
48

int lmp1=4, lmp2=5, rmp1=2, rmp2=3;
char incomingData;
#include   "function.h"
void setup() {
  Serial.begin(9600);
  pinMode(2,OUTPUT);
   pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  
}

void   loop() {
  if(Serial.available()>0){
    incomingData = Serial.read();
     if(incomingData == 'F'){
      Serial.print("For");
      goForward();
       delay(500);
      stopCar();
    }
    else if(incomingData == 'B'){
       goBackward();
      delay(500);
      stopCar();
    }
    else   if(incomingData == 'L'){
      leftTurn();
      delay(500);
      stopCar();
     }
    else if(incomingData == 'R'){
      rightTurn(); 
      delay(500);
       stopCar();
    }
    else if(incomingData == 'X'){;
      stopCar();
     }
    else if(incomingData == 'Y'){
      stopCar();
    }
   
   }
  

}

Code

c_cpp

Here is the project code

1int lmp1=4, lmp2=5, rmp1=2, rmp2=3;
2char incomingData;
3#include  "function.h"
4void setup() {
5  Serial.begin(9600);
6  pinMode(2,OUTPUT);
7  pinMode(3,OUTPUT);
8  pinMode(4,OUTPUT);
9  pinMode(5,OUTPUT);
10  
11}
12
13void  loop() {
14  if(Serial.available()>0){
15    incomingData = Serial.read();
16    if(incomingData == 'F'){
17      Serial.print("For");
18      goForward();
19      delay(500);
20      stopCar();
21    }
22    else if(incomingData == 'B'){
23      goBackward();
24      delay(500);
25      stopCar();
26    }
27    else  if(incomingData == 'L'){
28      leftTurn();
29      delay(500);
30      stopCar();
31    }
32    else if(incomingData == 'R'){
33      rightTurn(); 
34      delay(500);
35      stopCar();
36    }
37    else if(incomingData == 'X'){;
38      stopCar();
39    }
40    else if(incomingData == 'Y'){
41      stopCar();
42    }
43   
44  }
45  
46
47}
48

int lmp1=4, lmp2=5, rmp1=2, rmp2=3;
char incomingData;
#include  "function.h"
void setup() {
  Serial.begin(9600);
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  
}

void  loop() {
  if(Serial.available()>0){
    incomingData = Serial.read();
    if(incomingData == 'F'){
      Serial.print("For");
      goForward();
      delay(500);
      stopCar();
    }
    else if(incomingData == 'B'){
      goBackward();
      delay(500);
      stopCar();
    }
    else  if(incomingData == 'L'){
      leftTurn();
      delay(500);
      stopCar();
    }
    else if(incomingData == 'R'){
      rightTurn(); 
      delay(500);
      stopCar();
    }
    else if(incomingData == 'X'){;
      stopCar();
    }
    else if(incomingData == 'Y'){
      stopCar();
    }
   
  }
  

}

Downloadable files

Schematic

Here is the circuit diagram.

Schematic

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