Control the car with your phone (Arduino)

1. INTRODUCTION

This project is about building a two wheel mobile robot that could be controlled using your Android smartphone via Bluetooth. The robot uses a HC-05 Bluetooth module interfaced to an Arduino UNO.

Firstly before I assemble the robot i build a prototype circuit with the entire electronic component required to operate the robot. Before assembling the circuit to the robot base, I tested the circuit

and the programe sequence using a software call FLOWLOGIC 6 allow me to test each electronic component such as DC motor, sonor sensor, push buttons etc. Manually using various flowchart command blocks. Upon testing, troubleshooting and debugging proses, I begin to develop embedded proses . I begin to develop embeded my robot control program in C++ language using ARDUINO IDE.

The embedded program contains multiple function such as setup, loop, motor foward, motor reverse, motor right, motor left, motor stop. After completing codding the program I compile it and upload option that is available in the ARDUINO IDE. During compiling and uploading proses restify number of program errors that occured.




2. THE CONTROL CIRCUIT

3.ROBOT EMBEDED C++ CONTROLL PROGRAM

 * MY MOBILE ROBOT  PROGRAM

 *

 *

 * DEVELOPED BY: S.PRAVEEN RAJA

 * 16 DECEMBER 2016

 */

#include <NewPing.h>;

 byte serial

int sv;

#define TRIGGER_PIn12  // Arduino pin tied to trigger pin on the ultrasonic sensor.

#define ECHO_PIN11  // Arduino pin tied to echo pin on the ultrasonic sensor.

#define MAX_DISTANCE 200 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.

#define m1speed 5

#define m1fwd 6

#define m1rev 7

#define m2speed 10

#define m2fwd 9

#define m2rev 8

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.

void setup(){

Serial.begin(9600); // Open serial monitor at 115200 baud to see ping result

pinMode(2,INPUT);

pinMode(3,INPUT);

  pinMode(4,INPUT);

  pinMode(m1fwd,OUTPUT);

  pinMode(m1rev,OUTPUT);

  pinMode(m2fwd,OUTPUT);

  pinMode(m2rev,OUTPUT);

}

Void loop ()

{

  delay(50);                // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.

 unsigned int uS = sonar.ping(); // Send ping, get ping time in microseconds (uS).

 sv = (uS / US_ROUNDTRIP_CM);

 Serial.println(sv);

    if (sv < 4)

    {

    STOP();

    Serial.println("4") ;          

  if (Serial.available()>0)

  {

    serialA=Serial.read();

    Serial.println(serialA);

    switch (serialA)

    {

      case 49 :

      fwd()
     break;

   

     case 50 :

     rev();

     break;

     case 51 :

     left();

     break;

     case 52 :

     right();

     break;

   

     case 53 :     

     STOP();

     break;

  }

  }

  if (digitalRead(2) == 1)

  {

    fwd();

  }

   if (digitalRead(3) == 1)

   {

    rev();

   }

  if (digitalRead(4) == 1)

  {

  STOP();

}

}

void fwd()

{

    Serial.println("fwd");

  analogWrite(m1speed,255);

  digitalWrite(m1fwd,HIGH);

  digitalWrite(m1rev,LOW);

  analogWrite(m2speed,255);

  digitalWrite(m2fwd,HIGH);

  digitalWrite(m2rev,LOW);

}

void rev()

{

  Serial.println("rev");

  analogWrite(m1speed,255);

  digitalWrite(m1fwd,LOW);

  digitalWrite(m1rev,HIGH);

  analogWrite(m2speed,255);

  digitalWrite(m2fwd,LOW);

  digitalWrite(m2rev,HIGH);

}

void STOP(){

  Serial.println("STOP");

   analogWrite(m1speed,0);

  digitalWrite(m1fwd,LOW);

  digitalWrite(m1rev,LOW);

  analogWrite(m2speed,0);

  digitalWrite(m2fwd,LOW);

  digitalWrite(m2rev,LOW);

}

 void left()

{

  Serial.println("left");

  analogWrite(m1speed,255);

  digitalWrite(m1fwd,LOW);

  digitalWrite(m1rev,LOW);

  analogWrite(m2speed,255);

  digitalWrite(m2fwd,HIGH);

  digitalWrite(m2rev,LOW);

}

void right()

 {

    Serial.println("right");

  analogWrite(m1speed,255);

  digitalWrite(m1fwd,HIGH);

  digitalWrite(m1rev,LOW);

  analogWrite(m2speed,255);

  digitalWrite(m2fwd,LOW);

 digitalWrite(m2rev,LOW);}

4. ROBOT APP USING MIT APP INVENTOR

BLOKS FOR BLUETOOTH CONNECTION  SELECTION

BLOKS FOR ROUTINE BLUTOOTH CONNECTION

BLOKS FOR MOTOR CONTROLLER

5.ROBOT COMPONENT

I HAVE UPLOADED A VIDEO TO SHOW IT"S WORK

THERE WERE SUBTITLE IN THIS VIDEO


HAPPY ROBOTING😊😊😊😊