Remote Controlled Arduino Car





Introduction: Remote Controlled Arduino Car

About: A programming enthusiast. I tinker around with everything I see and love to game.
I always liked to go to camps, etc where there are a lot of my friends, I always liked having a lot of friends, and one day as I was looking up youtube for remote control cars, and how they were made, I figured out that I could make one for myself from the components I had,

Please vote for this in the Micro-controller Contest --->>>(Thanks in advance)

All I needed for this make was :

  • Arduino(20$)
  • Breadboard(3$)
  • Some Capacitors(3$)
  • Resistors 1K,10K(2$)
  • 2 Motors(10$)
  • 1 Servo(3$)
  • 1 Distance sensor (Optional)(10$)
  • 1 Sound sensor (Optional)(5$)
  • 1 Line tracking sensor (Optional)(6$)
  • LEDs(1$)
  • Jumper Cables(2$)
  • Voltage Regulators (1 for the servo)(2$)
  • Transistors((NPN)For the Motors)(2$)
  • 4 pcs 9 V batteries(8$)
  • Blue-tooth Transceiver(13$)

So the total cost for the beginners version is : 69$ with the arduino
And the total cost for the pro version is(Like the one I made with all the optional stuff) : 90$ with the arduino

Here is a video of the whole project, this is the video of the 1st mode of the project, it shows the robot communicating with the computer via USB cable and wirelessly and it shows how the shooter works.

In the code that I will provide there will be only the basic code, which is without the optional parts, if you want the code for any of the other parts, request me in the comments section and Iwill give you the code for that particular part,
In my final version, where the code is quite long, there are 4 modes

1st mode

The robot connects to the computer wirelessly via blue-tooth, and it listens to all the commands, including
(Turn Left, Turn Right, Forward, Target turn Left, Target turn Right, Shoot and more...)
The target stuff is basically, that there is a servo with an LED mounted on it, which acts as a turret as you can see in my other instructable (Star-Wars X-Wing 2)

2nd mode

This is the mode where I use a distance sensor
The distance sensor constantly give in values of how far the things in front are, and if something is close by, then the robot will stop and turn away, or go reverse.
You might like to mount the distance sensor on top of a servo, because that would give you a much wider range.

3rd mode

This is where the sound sensor takes action, When any sound above a certain level is detected as specified in the code, or if a stored tune is herd, then the robot will move accordingly to get away from the sound as much as possible, Its really easy to reverse this so that the robot comes towards you.

4th mode

This one is the line tracking mode, where the robot follows lines, I used a pre-made sensor, but you can find instructions on how to make your own, if you look up Google. In this mode there are another 2 mini modes, one is to follow a line, and the other is to stay inside a line.
One good tip is to make sure that the sensor is placed as close to the ground as possible.

You must be wondering how I switched the modes, well you could do that by using the computer, but I used a 5 way switch for the four modes and one is for off, and for the fourth mode, to switch between the mini modes, I just used a normal switch.
But after all this I realized it was very messy and would be a lot easier and better, if you changed mode from the computer, so I did that later.

There was a huge use of power as I used 4 nine volt batteries, as I had to use two for the two motors, one for the servo and one for the arduino, the servo needed a lot more current than the arduino can provide, so I had to use another power device and add a voltage regulator to it, as the servo could only handle 5V and I thought that adding a lot of 1.5V batteries increases the weight a lot, so I just used my trusty 9 V battery and the voltage regulator.
The motors had to be powered by a separate power supply because, if I connected the motors to the arduino then, there would not be enough power to connect the 3 sensors and the blue-tooth transceiver, and the motors would not go fast if I connected them to the arduino, so I used a transistor for each motor and connected it to the arduino.

And then the last step for me was to make a base for this to make it look cool, so I made a dome sort of thing to cover the entire robot and it looks really cool, you can make any kind of dome you like.

Here is the main code for this robot, but if you want the code for the optional parts then just ask in the comments section :

#include Servo.h

int LedPin1 = 12;
int LedPin = 13;
int MotorPin1 = 9;
int MotorPin2 = 10;
int servoPin = 6;

Servo VishalServo;

void setup()
digitalWrite(LedPin, HIGH);
Serial.println(Robotic tank);
pinMode(LedPin, OUTPUT);
pinMode(LedPin1, OUTPUT);
pinMode(MotorPin1, OUTPUT);
pinMode(MotorPin2, OUTPUT);
Serial.println(Wait for 1 second);
Serial.println(You can now give commands);

void loop()
while (Serial.available() == 0);
int val = - '0';

int i =;

if (val == 2)
Serial.println(Robot is On);
digitalWrite(MotorPin1, HIGH);
digitalWrite(MotorPin2, HIGH);
delay (500);
digitalWrite(MotorPin1, LOW);
digitalWrite(MotorPin2, LOW);

if (val == 1)
Serial.println(Robot is turning left);
digitalWrite(MotorPin2, HIGH);
digitalWrite(MotorPin2, LOW);

if (val == 3)
Serial.println(Robot is turning right);
digitalWrite(MotorPin1, HIGH);
digitalWrite(MotorPin1, LOW);

if (val == 9)
Serial.println(Turning right);

if (val == 7)
Serial.println(Turning left);

if (i = 165)

if(i = 165)

if (val == 5)
digitalWrite(LedPin1, HIGH);
digitalWrite(LedPin1, LOW);

if (val == 8)



This is the code for only the first method as I consider this as the basic / main part of this robot.
If you want the led to stay longer just change the delay between LED pin1 HIGH and LED pin 1 LOW.(Or you might just ask me to do that if you think its too hard or if you are a beginner.

And make sure that the servo is connected to a PWM enabled pin, I used pin 6(PWM means Pulse Width Modulation)

Here is the code you need to use in processing(Its a program that programs the computer)(You can download it for free from the internet, just type in processing and the first link is the one)This code is used to post updates to twitter saying what your robot is doing when you give it commands :

* based on:

import processing.serial.*;

Serial myPort; // The serial port
PFont myFont; // The display font
String inString; // Input string from serial port
int lf = 10; // ASCII linefeed

Twitter twitter; // Twitter

//Going to get oAuth working instead of this, but this will do for now
String username = "YOUR-TWITTER-USERNAME"; // you Twitter Username Here
String password = "YOUR-TWITTER-PASSWORD"; // your Twitter Password Here

void setup() {
twitter = new Twitter(username,password);
myFont = loadFont("AppleGothic-48.vlw");
textFont(myFont, 18);
myPort = new Serial(this, Serial.list()[0], 9600);
myPort.bufferUntil(lf); //wiat for line feed to specify end of serial buffer

void draw() {
text("color selected: " + inString, 10,50);

void serialEvent(Serial p) {
inString = p.readString();//read serial string
//For some reason this only wanted to work in a try catch
Status status1 = twitter.updateStatus("Arduino's favorite color is "+inString);//update twitter status
catch( TwitterException e) {

Change username and password with your twitter username and password, I tried it and it works perfectly.
If you want to post updates to an application on twitter go and have a look at my other instructable :

This is the code for using the ultrasonic range finder instead of a distance sensor, like I did  : )

int blinkLed=13; // Where the led will blink
int sensorPin=0; // Analog Pin In
int sum=0; // Variable to calculate SUM
int avgrange=50; // Quantity of values to average
int sensorValue; // Value for te average
int i,media,d; // Variables
float cm,inch; // Converted to cm

void setup()
Serial.begin(9600); // To check what is being read on the Serial Port

void loop() {

d=analogRead(sensorPin); // Read the analog value
digitalWrite(blinkLed,HIGH); // Turn on LED
delay(d); // Delay changes with the analogread
digitalWrite(13,LOW); // Turn off LED
delay(d); // Another delay

cm = (d / 2) * 2.4; // Convert the value to centimeters
inch = d/2; // Value in inches

Serial.println(cm); //Print average of all measured values

// This is the code if you want to make an average of the read values


for(i = 0; i < avgrange ; i++) {

media = sum/avgrange;
Serial.println(media); //Print average of all measured values




If you want the schematic for this project, or if you want specific code for different things or if you need help related to this project, then just leave a comment in the comments section, or if you want more details on how to connect any of the below, please ask.

And if you want this to run with commands from remote, all you need to do is use this infrared remote and you can control the whole robot wirelessly with a remote, or if you want it to be more like a remote control car, then you can add an actual remote control car controller or any game-pad for pc, links below...

Infrared Remote :

RC remote :

Steering Wheel :

I made my own dome for this project which fits on top of all the mess and makes the RC Car look like an RC car, but I didn't add any pictures of the dome as I would like you people to make your own personalized domes, and not just copy me...

And of course you can expand upon this project, and if you make something cool share a picture of it by adding a picture while posting a comment, as I would like to see how this instructable has inspired you people to come up with something great.

Links :

Arduino :

LEDs :

Motors :

Servo :

Where to download the Arduino IDE :
Where to download Processing :

I really didn't like the interface of the Arduino as you had to click enter after entering each and every command, so I used putty

Where to download Putty :

Sorry about some blurry pictures... :(



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    111 Discussions

    hy sir is nice project am doing the same typee of project for ma graduation please can you send the over all code and circuit diagraming in ma emai

    Hey, vishalapr. Could you send me the circuit diagram and the code for the computer controlled mode, the ultrasonic sensor, and the sound sensor? My email is


    8 months ago

    Hi. Impressive stuff!! I really need your help to make the arduino car move in the pattern of an 8. Please help me out with the code for that. you can contact me by email: chanda.o.kasongo@gmail.ocm


    1 year ago

    Bro give me the circuit diagram plz


    1 year ago

    Hey everyone,

    If you are looking for a fully assembled Arduino car (you don't have to assemble it at all), which includes all of the code for it to move and instructions on how to use it, program it, and develop it -

    go to:


    1 year ago

    Can you send the schematics and code for driving with the ultra sonic sensor?

    thank you in advance

    This is very interesting. Can you send the schematics for driving with the ultra sonic sensor?

    I like this project and have developed an interest in doing it. Can you please help me out by sending me the circuit diagram of the project?
    My email is-

    Hello sir I m beginner we r making a robot which has wheels . I need a code for car robot which can move forward, reverse, left and right


    1 year ago

    Can u send me the schematics. Thanks.

    Hey man! Could you send me the schematic for this at ?

    Hey can you please send me the circuit diagram of your project? Thanks in advance.


    i like your project. Can you send me the code and circuit at please?

    hey, I know this is a few years later but could you send me the circuit diagram? I'd like to try this, really looks cool! at

    thanks a lot in advance!

    can you send me circuit for

    Can you please send an email with the circuit diagram? Nice work!!

    1 reply

    my email adress is

    Nice work, but it will be better to have a circuit diagram, can u please mail it to Appreciate that

    hai i need a circuit diagram about this project..please mail me the below email address please,