Published May 2, 2017 © CC BY-NC-SA

CARMAGEDDON: The Agile Arduino Car

A simple and easy to assemble car controlled via smartphone using bluetooth technology.

BeginnerShowcase (no instructions)11,604

Things used in this project

Hardware components

Arduino UNO

Arduino MotorShield Rev3

HC-06 Bluetooth Module

4xAA Battery Holder - 2xDC Motors - 2xWheels - Frame - Wires

2xAA Battery Holder

Rechargeable Battery AA

Male/Female Jumper Wires

Four jumpers needed

Slide Switch

Software apps and online services

Arduino IDE

Story

Since I was a kid I have always wanted a RC car. Unfortunately, for many reasons, I have never got one. So, one day, I decided to make one all by myself.

I thought it would have been better if I had controlled it directly with my smartphone and if it had been simple, without any camera or sensor. I did not want to make it too fancy, I just wanted something that you can turn on, make it going around an have fun with it.

I ended up making, in my opinion, one of the best demonstration of how easy and satisfying is creating something with Arduino. Without almost any effort, everyone can replicate this project and start learning Arduino.

And that's how it works!

Code

Carmageddon's Head.ino

char command;                  
int const directionA = 12;		   
int const directionB = 13;
int const speedA = 3;		                    //A is the left wheel, B is the right one
int const speedB = 11;
int const brakeA = 9;			   
int const brakeB = 8;
bool flagBackward;

void setup() {
  Serial.begin(9600);          
  pinMode(directionA, OUTPUT);
  pinMode(directionB, OUTPUT);
  pinMode(speedA, OUTPUT);             
  pinMode(speedB, OUTPUT);
  pinMode(brakeA, OUTPUT);
  pinMode(brakeB, OUTPUT);
}

void loop() {

  if (Serial.available() > 0) {             

    command = Serial.read();                 

    switch (command) {
      case ('='):                                //stop command
        flagBackward = false;
        analogWrite(speedA, 0);
        analogWrite(speedB, 0);
        digitalWrite(brakeA, HIGH);
        digitalWrite(brakeB, HIGH);
        break;

      case ('F'):                               //forward command
        flagBackward = false;
        digitalWrite(brakeA, LOW);	   
        digitalWrite(brakeB, LOW);
        digitalWrite(directionA, LOW);	
        digitalWrite(directionB, LOW);
        analogWrite(speedA, 255);
        analogWrite(speedB, 255);
        break;

      case ('B'):                               //backward command
        flagBackward = true;
        digitalWrite(brakeA, LOW);
        digitalWrite(brakeB, LOW);
        digitalWrite(directionA, HIGH);
        digitalWrite(directionB, HIGH);
        analogWrite(speedA, 255);
        analogWrite(speedB, 255);
        break;

      case ('R'):                               //right command
        digitalWrite(brakeA, LOW);
        digitalWrite(brakeB, HIGH);
        if (flagBackward == false) {
          digitalWrite(directionA, LOW);
        } else {
          digitalWrite(directionA, HIGH);
        }
        digitalWrite(directionB, HIGH);
        analogWrite(speedA, 255);
        analogWrite(speedB, 0);
        break;

      case ('L'):                               //left command
        digitalWrite(brakeA, HIGH);
        digitalWrite(brakeB, LOW);
        digitalWrite(directionA, HIGH);
        if (flagBackward == false) {
          digitalWrite(directionB, LOW);
        } else {
          digitalWrite(directionB, HIGH);
        }
        analogWrite(speedA, 0);
        analogWrite(speedB, 255);
        break;

    }
  }
}

Credits

RogerGold

1 project • 3 followers

CARMAGEDDON: The Agile Arduino Car

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Carmageddon's Body.fzz

Code

Carmageddon's Head.ino

Credits

RogerGold

Comments

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CARMAGEDDON: The Agile Arduino Car

CARMAGEDDON: The Agile Arduino Car

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Carmageddon's Body.fzz

Code

Carmageddon's Head.ino

Credits

RogerGold

Comments

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