🚗 Arduino Bluetooth Car

Arduino Bluetooth Car is an open-source project that guides you through building a Bluetooth-controlled car using Arduino. It includes everything from 3D-printable STL files and wiring diagrams to Arduino code and a mobile app, making it a comprehensive solution for electronics and embedded systems development.

Includes STL files for 3D-printing the car components.
Fully functional Arduino code to control motors and Bluetooth communication.
Detailed circuit diagrams for easy and accurate assembly.
Custom Android app for real-time car control via Bluetooth.
Ideal for students, makers, and robotics enthusiasts.

Gain practical experience with a fully functional prototype!

🖼️ Preview

🛠️ Assembly Guide

Follow these steps to build your Car from scratch

Gather the Components

Arduino Nano
Bluetooth module HC-05 TTL
Double H bridge driver L298N
4x TT motors with gearbox
2x GeB LiPol Baterie 3.7V
Breadboard 830 points
Dupont Wires (M-M, F-F, M-F)

Print and Assemble the Car Body

All .stl files are ready for printing and are located in the 3d-models/ folder.
You will need to print nail.stl 8 times and wheel.stl 4 times.
To help visualize the complete car, refer to the included Blender file: arduino-BTcar.blend.
Open this .blend file in Blender to view the correct orientation and placement of all printed components.

Assemble the Electronics

Upload the Code

Connect the Arduino Nano to your computer using a Mini-B USB cable.
Open code.ino in the Arduino IDE
Select Arduino Nano and correct COM port
Click Upload

Install the App

Download the controller.apk from the repo root or click here.
Install it on your Android device (you may need to allow unknown sources).
Enable Bluetooth and connect to HC-05. The default pairing password is 1234.
Open the app, tap Connect, and choose HC-05. Wait until the Connect button becomes dark — this indicates a successful connection.

📋 License

All the code contained in this repo is licensed under the MIT License

MIT License

Copyright (c) 2025 marsdevx

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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License

marsdevx/arduino-BTcar

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