Simple Bluetooth Controlled Car

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Introduction: Simple Bluetooth Controlled Car

Hi,

in this tutorial I'll show you how did I transfer one of my broken RC cars in working one using Arduino.

(there are some descriptions in pictures so don't just look at text below pictures)

Step 1: Parts

All I used is Arduino, BT HC-06, relay shield ( I really love relays, cheap and can lead currents up to 10A), some LEDs, wires and old RC car.

Step 2: Connecting Diagrams

In pictures is all described.

As power supply for motors I used batteries under the car and for arduino I used 9V battery.

There is on servo for turning the car, there is just ordinary DC motor, so for this setup you have to have minimum of 4 relays, 2 relays are for forward and back and other 2 are for left and right.

Step 3: The Code

Code for android application is in pictures, for programming I used MIT App inventor, it's very simple program for making some basic applications.

I attached arduino code in .txt file, just download it and copy paste it in arduino software.

Step 4: Putting All Together

Android application for car control you can download from here:

https://play.google.com/store/apps/details?id=brau...

I also made simple application just for driving the car, without possibility of controlling the lights, you can download it in attached file.

And here is video :)

That would be it! I'm sorry for the lack of more detailed pictures, but if you have some more questions just post below. Thanks for watching and fell free to vote :)

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40 Comments

Hi friends İ want stop car when bluetooth disconnect or lost how to do?

hello evver , i need some your of help, can i have a complete wiring picture of your relay shield and motor because i have tried mine, the motor didnt run but the relay works perfecty but just motor i have no idea why the motor didint run

I really liked this a lot.

But the file "arduino car control.txt" is a code for arduino or bluetooth controlling app.

if it is for arduino then it should have ".ino" extension right?

It's for arduino, I used to make some changes in software in notepad at school , so that's why it stood .txt file

Can't we make our own relay shield?

Is there any site to do it?

Is your relay shields are of 5v or 12v?

I'll answer on your both posts.

You can make your own relay shields with no problem, but it was cheaper to buy shield which is already assembled.
These relays are 5V and can connect and disconnect around 380V 10A (I think) , if you plan to do it, it's not hard at all, just connect output of arduino to relay coil and you have it :=)

Arduino Car control.txt is arduino code, just copy-paste it, it doesn't matter if is .ino or .txt, code is a code.

I'll answer on your both posts.

You can make your own relay shields with no problem, but it was cheaper to buy shield which is already assembled.
These relays are 5V and can connect and disconnect around 380V 10A (I think) , if you plan to do it, it's not hard at all, just connect output of arduino to relay coil and you have it :=)

Arduino Car control.txt is arduino code, just copy-paste it, it doesn't matter if is .ino or .txt, code is a code.

Which battery you used for motors?

2x 4.5V batteries, they are great because they have greater capacity than 6x 1.5V batteries.

is this the image u are talking about

and btw M is motor?

coz i am using 2 motors