Arduino Bluetooth RC Car (Android Controlled)

362,597

139

192

Introduction: Arduino Bluetooth RC Car (Android Controlled)

Hello, in this project I will show you how to transform an RC toy car to Bluetooth controlled through your Android smartphone!

Before starting, make sure that you have:

  • Arduino uno board
  • L293D motor driver
  • HC-06 Bluetooth module
  • RC Car that can fit all the above !

Optional you will need:

  • 1M & 100K resistor for battery level
  • 4x leds for lights
  • 1x speaker/buzzer for horn sound

For power, you can use the existing batteries (4x 1.5V AA), or replace them with a LiOn rechargeable battery pack.

(I used 12V LiOn rechargeable battery pack)

Official page: http://www.ardumotive.com/bluetooth-rc-car.html

Step 1: Remove the Existing Rc Circuit

Before starting, remove the existing rc circuit. You will not need it any more... you will make a better one from the beginning with Arduino uno ;)

Now, with one battery AA 1.5V you must find the polarity of 2 c motors.

  • For movement motor (back side) the positive polarity cable will be that moves the car forward.
  • For direction motor (front side) the positive polarity cable will be that moves the wheels left.

Step 2: Breadboard Schematic

Ι suggest you to build your circuit on (small) breadboard first.

You can use on/off switch of car like this:

Battery +........./ .......... Arduino Vin

Tip

If you have a "big" rc car it will need more power so you can use L298 module board. L293D motor driver will give max 0.5A per channel and it will be come very hot after while. L298 module board has a heat sink and can give 1A per channel, but is bigger than L293D.

Step 3: Code

Download and open file with Arduino ide. Read every line of code (+comments) to understand how it's working and then upload it to your Arduino uno board!

(for programming arduino uno board you must disconnect first the RX & TX pins of Bluetooth module)

Step 4: Android Bluetooth Controller

To control your new Bluetooth car, download and install this android application:

http://www.ardumotive.com/bluetooth-rc-car.html

Tip

First enable Bluetooth and establish connection with BT module.
(ex. HC-06, password 1234)
Use "Help & info" button if you can not understand how it is working.

Accelelometer function is under developing, use with attention!

If you have problem with this app on your android device you can also use this one.

Step 5: Video of My BT ArduiCar

Video is in Greek language but I believe that you can understand it...

Thanks for watching!!!

Remember that Bluetooth technology will give you max 15-20 meters of control.

Follow - Comment - Share

12 People Made This Project!

Recommendations

  • Toys & Games Contest

    Toys & Games Contest
  • Big vs Small Challenge

    Big vs Small Challenge
  • Fix It Challenge

    Fix It Challenge

192 Comments

0
HariN27
HariN27

3 years ago

bro i want to add a ultrea sonic [distance sensoer] to the same code that is the car will stop automatically when objects come naear 2meters,plz pm me harinadh.38@gmail.com

0
JomarM3
JomarM3

Reply 3 years ago

could you kindly send this also to me? i am also planning to add the ultrasonic sensor :) thank you, my email is jmangubat528@gmail.com

0
HariN27
HariN27

Reply 12 months ago

HAAA I WILL

0
HariN27
HariN27

Reply 1 year ago

YAAA

0
HariN27
HariN27

Reply 3 years ago

if isuccess i will send u

0
bajabhai846
bajabhai846

Question 1 year ago

Hey I have an HC-05 can I use it..?

0
HarisY
HarisY

1 year ago

Hello, I have made this project and run well. But when I press forward or other button continuously, the system became hang and not respond to any command from android. After I press reset button on Arduino, it back to normal again. At first I think arduino deficient power because I use 1 battery source. So I try to separate battery for arduino and for motor DC and configure the jumper on L293D motor driver shield. But it still hang when I run the car with continuous pressing. What should I do? anybody have the same problem like me? thanks in advance.

0
Parasji100
Parasji100

Question 1 year ago

How much mah battery we have to use ?

0
LashaG
LashaG

Question 3 years ago

I was using this app for a while and now it sends only S on any button can you help me?

0
Parasji100
Parasji100

Answer 1 year ago

Can u give me the code.

0
JokubasG1
JokubasG1

Question 2 years ago on Introduction

I made rc car that is a bit bigger than it’s shown. My problem is that there is too low voltage to turn front wheels. I don’t know what to add or change to put more voltage. I think that arduino puts out too low voltage. 10V battery sould be enough. Could you help me out?

image.jpg
0
HuseynS1
HuseynS1

Answer 2 years ago

You can use L298N motor driver and add additional battery to use the motor.

0
RoboT16
RoboT16

2 years ago

Can i use l298n in this programing

0
hobby electronics
hobby electronics

3 years ago

Hello

Can I use HC-05 bluetooth module instead of 06 and is there any AT mode settings in this project

0
ErvanP
ErvanP

3 years ago

Can i have the android apps code.

0
JhonG26
JhonG26

Question 3 years ago on Introduction

Can I use here 10000mah 5V powerbank instead of 12v LiOn battery; and instead of bluetooth module can I use wifi module instead? thanks!