icon
    Arduino Robot Car Bluetooth Controlled and Programmed With Android

    Making an Arduino robot car project is very fun, especially if you make it yourself and are supported by tutorials and tools that support quite complete. 

    This time we made the Arduino robot car main chassis is powered by the Black Gladiator tracked robot chassis, low noise, and easy to control, which could be a good partner for your tank-liked robots. This tracked chassis employs high-strength aluminum alloy base with delicate appearance, higher stability and longer durability. 

     Here are tutorials and videos that will guide you from beginning to end with an easy step of course. 

     Let's get started!

    STEP 1
    Part Requeriments
    projectImage
    HARDWARE LIST
    1 Black Gladiator - Tracked Robot Chassis
    1 Arduino Uno Compatible
    1 Motor Shield Adafruit V1
    1 Bluetooth module HC-05
    1 Slide switch SPDT
    1 4 Female Dupont cable 20cm
    2 Cable AWG24 18cm
    2 Cable AWG24 14cm
    2 Battery 18650 Li-ion 3.7V
    2 Spacers 10mm
    1 OTG adapter
    STEP 2
    Circuit Diagram
    projectImage
    STEP 3
    Mount the Motors
    projectImage
    projectImage
    projectImage

    After soldering, you can use heat shrink tube onto the wire so that it covers and secure them futher. It also makes the wires easier to manage. 

     Mount the Motors into metal body chassis and tighten it with 3 M3*6 flat head screws.

    STEP 4
    Install the Drive Wheel
    projectImage
    projectImage

    Firstly insert the coupling into shaft of motor and tighten with black screw; please note: the hole on the coupling must be aligned with the flat end of the motor shaft.

    projectImage
    projectImage

    Install drive wheel into coupling, use the allen key to fit the M3*8 hex socket screw into the drive wheel and lock it with the coupling.

    projectImage

    Repeat these steps to install the drive wheel on the other side.

    STEP 5
    Install Slave Wheel
    projectImage

    First insert the M4*50 long screw into the slave wheel, and lock the other side with the M4 hex nut. Please provide a gap between the hex nut and the wheel, intended so that the wheel can rotate freely.

    projectImage

    Insert the slave wheel assembly (long screw) to the outer side hole of body chassis.

    projectImage

    Clamped with a ring washer and nut, then tighten it using a pass key or pliers.

    projectImage

    When finished make sure the wheels can spin freely.

    projectImage

    Repeat these steps to install the slave wheel on the other side.

    STEP 6
    Tracks
    projectImage

    Remove the track first by pressing using the needle.

    projectImage

    Remove the excess part of the track (remove 4 track), and measure the required track length.

    projectImage

    Embed the track pin into the track using pliers.

    projectImage
    STEP 7
    Install Battery Holder & Switch
    projectImage
    projectImage

    Glue the slide switch SPDT into battery holder.  

    projectImage

    Cut the positive red cable then strip of the insulation off the end of each wire. 

    projectImage

    Solder the positive red cable to two pin of slide switch.

    projectImage

    Install battery holder into body metal chassis follow to the existing hole.

    STEP 8
    Install Arduino Board
    projectImage
    projectImage

    Tighten the two spacer to the holes already in the metal body chassis, then screw the Arduino on them.

    STEP 9
    Add Bluetooth Into Motor Shield
    projectImage
    projectImage

    Glue the Bluetooth module HC-05/HC-06 on the top of Motor Shield.

    projectImage

    Connect the Dupont cable to pin of HC-05/HC-06, then cut the cable so that it remains about 6cm.

    projectImage

    Connect and solder the cable between Bluetooth module HC-05/HC-06 and Motor Shield:

    VCC to 5V GND to GND

    projectImage

    RX to D1 & TX to D0

    STEP 10
    Install Motor Shield
    projectImage

    Push the Motor Shield carefully into Arduino, making sure all the pins go into header socket without missing and bending.

    projectImage

    Insert and tighten the motor wires into the respective terminal. Please note: You do not connect the a motor to the two terminals M1 and M2, the correct is the "Right Motor" connect to M1 and the "Left Motor" connect to M2.

    projectImage

    Install two 18650 battery into battery holder.

    STEP 11
    Programming Arduino Board
    projectImage

    Last step is programming Arduino Uno board, you can upload code/firmware directly from your Android phone to Arduino Uno via USB OTG. First, get app and instal from Google Playstore the link app is below: 

    Arduino Bluetooth Robot Car 

    To upload code firmware you need disconnect the pin RX & TX that connected to bluetooth module HC-05/HC-06 or you can do with unplug Motor shield first, this mean to prevent error when process writing code to Arduino through pin D0 & D1 (RX & TX).

    projectImage

    Open the app, then select menu Circuit Diagram & Code, in the Settings menu specify the parameters as follows: 

    Motor Driver to be used : Adafruit Motor Shield V1 

    Set Baud rate : 9600 

    Upload firmware via : USB OTG 

    Then select Remote Control Mode menu. The last is tap Upload icon and wait moment until the process writing code is completed.

    STEP 12
    Arduino Sketch

    If you use computer to upload sketch into Arduino Uno, copy and paste the code bellow to Arduino IDE and upload it.

    CODE
    /******************* Robot Remote Control Mode ********************/
    
    // include the Adafruit motor v1 library
    #include <AFMotor.h>
    
    AF_DCMotor MotorFR(1);   // Motor for drive Front Right on M1
    AF_DCMotor MotorFL(2);   // Motor for drive Front Left on M2
    AF_DCMotor MotorBL(3);   // Motor for drive Back Left on M3
    AF_DCMotor MotorBR(4);   // Motor for drive Back Right on M4
    
    const int buzPin = 2;  // set digital pin 2 as buzzer pin (use active buzzer)
    const int ledPin = A5;  // set digital pin A5 as LED pin (use super bright LED)
    int valSpeed = 255;
    
    String readString;  // declaring string
    
    void setup(){
      Serial.begin(9600);    // set up Serial library at 115200 bps
      Serial.println("*Robot Remote Control Mode*");
     
      pinMode(buzPin, OUTPUT);  // sets the buzzer pin as an Output
      pinMode(ledPin, OUTPUT);  // sets the LED pin as an Output
    
      // Set the speed to start, from 0 (off) to 255 (max speed)
      MotorFL.setSpeed(valSpeed);
      MotorFR.setSpeed(valSpeed);
      MotorBL.setSpeed(valSpeed);
      MotorBR.setSpeed(valSpeed);
      // turn off motor
      MotorFL.run(RELEASE);
      MotorFR.run(RELEASE);
      MotorBL.run(RELEASE);
      MotorBR.run(RELEASE);
    }
    
    void loop() {
      while (Serial.available() > 0) {
         char command = Serial.read();    // gets one byte from serial buffer
         Serial.println(command);
    
        switch(command){
        case 'F':   // move forward
            SetSpeed(valSpeed);
            MotorFL.run(FORWARD);
            MotorFR.run(FORWARD);
            MotorBL.run(FORWARD);
            MotorBR.run(FORWARD);
            break;
        case 'B':   // move backward
            SetSpeed(valSpeed);
            MotorFL.run(BACKWARD);
            MotorFR.run(BACKWARD);
            MotorBL.run(BACKWARD);
            MotorBR.run(BACKWARD);
            break;
        case 'R':   // turn right
            SetSpeed(valSpeed);
            MotorFL.run(FORWARD);
            MotorFR.run(BACKWARD);
            MotorBL.run(FORWARD);
            MotorBR.run(BACKWARD);
            break;
        case 'L':   // turn left
            SetSpeed(valSpeed);
            MotorFL.run(BACKWARD);
            MotorFR.run(FORWARD);
            MotorBL.run(BACKWARD);
            MotorBR.run(FORWARD);
            break;
        case 'G':   // forward left
            MotorFL.setSpeed(valSpeed/4);
            MotorBL.setSpeed(valSpeed/4);
            MotorFL.run(FORWARD);
            MotorFR.run(FORWARD);
            MotorBL.run(FORWARD);
            MotorBR.run(FORWARD);
            break;
        case 'H':   // backward left
            MotorFL.setSpeed(valSpeed/4);
            MotorBL.setSpeed(valSpeed/4);
            MotorFL.run(BACKWARD);
            MotorFR.run(BACKWARD);
            MotorBL.run(BACKWARD);
            MotorBR.run(BACKWARD);
            break;
        case 'I':   // forward right
            MotorFR.setSpeed(valSpeed/4);
            MotorBR.setSpeed(valSpeed/4);
            MotorFL.run(FORWARD);
            MotorFR.run(FORWARD);
            MotorBL.run(FORWARD);
            MotorBR.run(FORWARD);
            break;
        case 'J':   // backward right
            MotorFR.setSpeed(valSpeed/4);
            MotorBR.setSpeed(valSpeed/4);
            MotorFL.run(BACKWARD);
            MotorFR.run(BACKWARD);
            MotorBL.run(BACKWARD);
            MotorBR.run(BACKWARD);
            break;
        case 'S':   // stop
            MotorFL.run(RELEASE);
            MotorFR.run(RELEASE);
            MotorBL.run(RELEASE);
            MotorBR.run(RELEASE);
            break;
        case 'V':   // beep buzzer
            digitalWrite(buzPin, HIGH);
            delay(150);        
            digitalWrite(buzPin, LOW);
            delay(100);        
            digitalWrite(buzPin, HIGH);
            delay(250);        
            digitalWrite(buzPin, LOW);
            break;
        case 'W':   // turn light on
            digitalWrite(ledPin, HIGH);
            break;
        case 'w':   // turn light off
            digitalWrite(ledPin, LOW);
            break;
        case '0':   // set speed motor to 0 (min)
            SetSpeed(0);
            break;
        case '1':   // set speed motor to 30
            SetSpeed(30);
            break;
        case '2':   // set speed motor to 55
            SetSpeed(55);
            break;
        case '3':   // set speed motor to 80
            SetSpeed(80);
            break;
        case '4':   // set speed motor to 105
            SetSpeed(105);
            break;
        case '5':   // set speed motor to 130
            SetSpeed(130);
            break;
        case '6':   // set speed motor to 155
            SetSpeed(155);
            break;
        case '7':   // set speed motor to 180
            SetSpeed(180);
            break;
        case '8':   // set speed motor to 205
            SetSpeed(205);
            break;
        case '9':   // set speed motor to 230
            SetSpeed(230);
            break;
        case 'q':   // set speed motor to 255 (max)
            SetSpeed(255);
            break;
        } 
      }
    }
    
    // function for setting speed of motors
    void SetSpeed(int val){
      valSpeed = val;
      MotorFL.setSpeed(val);
      MotorFR.setSpeed(val);
      MotorBL.setSpeed(val);
      MotorBR.setSpeed(val);
    }
    Add TipAsk QuestionCommentDownload
    
    STEP 13
    Enjoy

    Hopefully you enjoy it. If you do and done, please share "I Made it!" to let me know how much is worked. Share the link, like and subscribe. As always, if you have any questions please let me know!  

    License
    All Rights
    Reserved
    licensBg
    1