How To Make Android Controlled Robot v2

• 1 x Arduino Uno Board
• 1 x L298N Motor driver Board
• 1 x Bluetooth Module
• 11 x 12v battery
• 2 xWhite LED
• 1 x Red LED
• 1 x Indication LED Any Color
• 4 x Bo Motor or 2 x 12v Geared Motor
• 1 x Buzzer
• 4 x Toy tyres(if you have Bo Motors )If using 2 x 12v Geared Motor then Two Tyres and a Coster wheel.
• 1 x Switch

• 1 x Robot Chassis/base :- i made it with combining 2 CD/DVD Outlets
• 1 x PC/Laptop (Just for coding and watching the recived videos from the bot)
• Arduino IDE
• 2 x Android Phone
• Android App to control robot.

Arduino Uno :-

• FEATURES OF ARDUINO UNO R3:-
• ATmega328 microcontroller
• Input voltage - 7-12V
• 14 Digital I/O Pins (6 PWM outputs)
• 6 Analog Inputs
• 32k Flash Memory
• 16Mhz Clock Speed

Bluetooth Module:-

1. We need some Large  space so Bring two Bad CD/DVD Drive from old PC.
2. Open the Case/Outlet/Outer Body Of that CD/DVD drive using Screw Driver.
3. Join them As shown in the image.
4. Now Connect the clamps of the geared Motor,If you are using Bo Motor then fit them on the chassis as Following diagram.

Circuit Diagram To Make an Android Controlled Robot v2

• Power Supply:-
• L298N's +12v         =  +12v battery
• L298N's GND        =  Gnd of Battery and GND of Arduino
• L298N's 5v            =  Arduino's VIN
• Arduino Board ---- Bluetooth Module
• Arduino's RX       = Bluetooth Module's Tx
• Arduino's TX       = Bluetooth Module's Rx
• Arduino's 5v         = Bluetooth Module's VCC
• Arduino's GND    = Bluetooth Module's GND
• Arduino Board ---- L298N Motor Driver Board
• Arduino's 5           = in1
• Arduino's 6           = in2
• Arduino's 10         = in3
• Arduino's 11         = in4
• Arduino Board ---- LED and Buzzer
• Arduino's 2           = Buzzer's red
• Arduino's 3           = Red Led ( with 220ohm resistor)
• Arduino's 4           = White LED ( with 220ohm resistor)

Also Read:-

Distance Measuring LED's Bar Graph For Parking Sensor

 

Traffic Light System with Pedestrian Crossing lights

Code or Program to Make an Android Controlled Robot v2

//The AndroBot By Sourabh Kumar @ http://www.androroot.com
#define in1 5 //L298n Motor Driver pins.
#define in2 6
#define in3 10
#define in4 11
#define whitelight 4
#define redlight 3
#define buzzer 2
#define LED 12
int command; //Int to store app command state.
int Speed = 204; // 0 - 255.
int Speedsec;
int buttonState = 0;
int lastButtonState = 0;
int Turnradius = 0; //Set the radius of a turn, 0 - 255 Note:the robot will malfunction if this is higher than int Speed.
int brakeTime = 45;
int brkonoff = 1; //1 for the electronic braking system, 0 for normal.
void setup() {
  pinMode(LED, OUTPUT);
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
  pinMode(in3, OUTPUT);
  pinMode(in4, OUTPUT);
  pinMode(whitelight, OUTPUT);
  pinMode(redlight, OUTPUT);
  pinMode(buzzer, OUTPUT);
  Serial.begin(9600);  //Set the baud rate to your Bluetooth module.
    Serial.println("The SKY Bot");
}
 void loop()
 {if (Serial.available() > 0) {
    command = Serial.read();
    Stop(); //Initialize with motors stoped.
    switch (command) {
      case 'F':
        forward();
        break;
      case 'B':
        back();
        break;
      case 'L':
        left();
        break;
      case 'R':
        right();
        break;
      case 'G':
        forwardleft();
        break;
      case 'I':
        forwardright();
        break;
      case 'H':
        backleft();
        break;
      case 'J':
        backright();
        break;
      case '0':
        Speed = 100;
        break;
      case '1':
        Speed = 140;
        break;
      case '2':
        Speed = 153;
        break;
      case '3':
        Speed = 165;
        break;
      case '4':
        Speed = 178;
        break;
      case '5':
        Speed = 191;
        break;
      case '6':
        Speed = 204;
        break;
      case '7':
        Speed = 216;
        break;
      case '8':
        Speed = 229;
        break;
      case '9':
        Speed = 242;
        break;
      case 'q':
        Speed = 255;
        break;
     
    case 'U': // Red light on
    Serial.println("Red LIght On");
    digitalWrite(redlight, HIGH);
    break;
 
    case 'u': // Red light off
    Serial.println("Red Light Off");  
    digitalWrite(redlight, LOW);
    break;
 
    case 'W': // Front Lights On
    Serial.println("White LIght On");
    digitalWrite(whitelight, HIGH);
    break;
 
    case 'w': // Front Lights Off
    Serial.println("White Light Off");  
    digitalWrite(whitelight, LOW);
    break;
 
    case 'V': //Buzzer On
    Serial.println("Buzzer On");
    digitalWrite(buzzer, HIGH);
    break;
 
    case 'v': // Buzzer OFF
    Serial.println("Buzzer Off");  
    digitalWrite(buzzer, LOW);
    break;
    }
    Speedsec = Turnradius;
    if (brkonoff == 1) {
      brakeOn();
    } else {
      brakeOff();
    }
  }
}
void forward() {
  analogWrite(in1, Speed);
  analogWrite(in3, Speed);
}
void back() {
  analogWrite(in2, Speed);
  analogWrite(in4, Speed);
}
void left() {
  analogWrite(in3, Speed);
  analogWrite(in2, Speed);
}
void right() {
  analogWrite(in4, Speed);
  analogWrite(in1, Speed);
}
void forwardleft() {
  analogWrite(in1, Speedsec);
  analogWrite(in3, Speed);
}
void forwardright() {
  analogWrite(in1, Speed);
  analogWrite(in3, Speedsec);
}
void backright() {
  analogWrite(in2, Speed);
  analogWrite(in4, Speedsec);
}
void backleft() {
  analogWrite(in2, Speedsec);
  analogWrite(in4, Speed);
}
void Stop() {
  analogWrite(in1, 0);
  analogWrite(in2, 0);
  analogWrite(in3, 0);
  analogWrite(in4, 0);
}
void brakeOn() {
  //Here's the future use: an electronic braking system!
  // read the pushbutton input pin:
  buttonState = command;
  // compare the buttonState to its previous state
  if (buttonState != lastButtonState) {
    // if the state has changed, increment the counter
    if (buttonState == 'S') {
      if (lastButtonState != buttonState) {
        digitalWrite(in1, HIGH);
        digitalWrite(in2, HIGH);
        digitalWrite(in3, HIGH);
        digitalWrite(in4, HIGH);
        delay(brakeTime);
        Stop();
      }
    }
    // save the current state as the last state,
    //for next time through the loop
    lastButtonState = buttonState;
  }
}
void brakeOff() {
}

Now we have to burn The code to the Arduino:

1. Download or copy the Code from the section Code or Program to Make an Android Controlled Robot v2 above.
2. Now start Your computer transfer the .ino file and open it with Arduino IDE.
3. Connect the Arduino Board and computer with Connecting Cable.
4. Select the Port and Board
5. Compile and Burn the code by clicking on the Upload button which will be on the Top-Left Corner of the IDE.

Steps to Controlling the Rover through The Android Phone:-

1. Switch the Rover On
2. In your Phone Go to Settings and find the Bluetooth settings.
3. Switch on the Bluetooth of the Android Phone,And Search for new Bluetooth Devices.
4. HC-04/05 will be Appear in the List after search result.
5. Pair with the Bluetooth module by using Passward:-1234
6. Now Open the Android App and click on Connect or connect to the bot.
7. A new window will be appear in which all the Bluetooth devices will be appear.
8. Click on HC-04/05.
9. Now your bot is connected with the android Smartphone.
10. Observe the Buttons and check then one by one by pressing them.
11. To add a camera take a android phone install AirDroid app in your Smartphone and also on Computer and connect them.Camera option will appear on the main menu on desktop AirDroid click on it.Now place the smartphone in the free space of the rover.