Introduction: Arduino Bluetooth Controled RC Car
In this instructable I am going to show you how to make Bluetooth controled car with 2 DC motors.
Step 1: Materials
Materials:
1.2x DC motor
2.L298N (motor controler)
3.Arduino Uno (or clone)
4.HC-05 (bluetooth module)
Step 2: Chassis Editing
I cut off Middle plastic part and replaced it with wood, then I added 4x1.5V battery pack in the middle of it.
Step 3: Wiring Scheme
Connect one motor to the OUT1 and OUT2 pins of L298N, connect second to the OUT3 and OUT4 pins.
Connect positive wire of batteries to +12V pin and negative to the GND of L298N, then connect same GND to GND of arduino.
Pins of HC-05 are conected to arduino like this: GND to GND; VCC to 5V; RX to TX and TX to RX.
Pins of arduino 8,9,10,11 are connected to IN1,IN2,IN3,IN4 of L298N.
Step 4: Connecting
Connect wites like in prevous step.
Step 5: Upload Code to Arduino
Connect your PC to Arduino and upload this code.
Attachments
Step 6: Download App
You can download app here:
https://play.google.com/store/apps/details?id=com.buncaloc.carbluetoothrc&hl=en
Step 7: App
Turn on your car.
Open app, turn bluetooth on and connect it to the HC-05.
Step 8: Done
Special thanks to "Srpska Nauka", he helped me build this car.
You can check his acaunt here:
https://www.instructables.com/member/Srpska+Nauka/

Participated in the
Robotics Contest

Participated in the
Tech Contest
2 People Made This Project!
- CarlosM175 made it!
- Marethno made it!
75 Comments
2 years ago
the car doesn't work and the scheme is wrong
5 years ago
i bought all these items,
i wired according to given...
i uploaded the code...
i connected hc05 with my tab...
but the car make no respones...i is remained stationary
Reply 4 years ago
when u upload the code remove rx and tx cables and plug when u done upload the code
Reply 2 years ago
i have also removed rx,tx and upload code .but my car is not working.
Question 2 years ago on Step 8
i have done everything.but my car is not working.
Question 3 years ago on Introduction
hi i have followed you instructions to build car i have downloaded code which compiles ok it uploads ok, i want to control it by android phone bluetooth i have downloaded the app ok it pairs ok states car is conected ok but on pressing directions nothing happens i do not know what i am doing wrong i am new to arduino so my codeing knowledge is sketchy please help as its driving me nuts
Question 4 years ago on Step 8
My car just turns arount itself, doesn't go forward. How can I solve it? And after some time the app on my phone gets errors. I didn't use servo motor, you didn't list it also but in the codes there is servo why?
Question 4 years ago
Hi. Where do you connect the servo motor for steering in the motor controller or the arduino uno? Pls help me!
Question 4 years ago
finished , but car make no response
help]']
4 years ago
Finished ,but no response
help me fast
4 years ago
thankzz...this is very helpfull...
4 years ago
Can you send this project pdf format to karolis656@gmail.com?
Reply 4 years ago
Same here can u send it to himipritmani@gmail.com ? thanks in advance :)
5 years ago
can i use the arduino bluetooth rc car app?
5 years ago
owsum site
Reply 5 years ago
qual o link do site?
5 years ago
no programa "APK" quais sao as portas do arduino para as luzes da frente e de tras?
5 years ago
@Dzefri I met problems while uploading the files.. Please help me to solve it..
5 years ago
Hi everyone, I am beginner to arduino. I don't know how the black wire from the battery can be separated into two. I don't know how to see the wiring schematic. anyone who know please reply me . thank you very much.
5 years ago
can you change the code for a 2wd car.i mean there will be not left-right motor.car will turn right-left by using two motor same time