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bt-car-f5299b-en.md

This project is a car that can be controlled by an Android device. It works using a Bluetooth module, specifically the HC-05, and an Adafruit motor shield. An important part is to connect TX and RX of Arduino to their opposites on the module: RX and TX. To connect the HC-05 module, use male-to-female jumper wires. To connect it, we want to cut an end of the wire that is the male part and connect it to Arduino. Then fix the motor shield upon it. The steps are: solder wire at two terminals of the motor, connect the wires to motor shield, fix the tires to the motor, connect the module to the Arduino, fix the components on the chasis, power the Arduino and motor shield, and lastly upload the code. Now the car is ready to run. Download an application which has left and right mentioned in it, then connect it with HC-05 module.

EXPANDED TECHNICAL DETAILS

Bluetooth-Powered Mobile Robotics

This project creates a responsive and modular remote-controlled vehicle, bridging standard serial communication with physical motor control.

  • Serial Character Parsing: The Arduino communicates with a smartphone via the HC-05 or HC-06 Bluetooth module. The firmware listens for specific action characters (e.g., 'F' for Forward, 'B' for Back, 'S' for Stop) and translates them into H-bridge logic signals.
  • Dual DC Motor Drive: Uses an L298N motor driver. The Arduino provides PWM (Pulse Width Modulation) signals to control the speed of two DC motors, allowing for proportional acceleration and smooth differential steering.

Prototyping

  • Wireless Range Optimization: Explains the placement of the BT antenna to minimize interference from the motor's electromagnetic noise, ensuring a stable control link up to 10 meters.

ข้อมูล Frontmatter ดั้งเดิม 

title: "BT Car"
description: "The car is controlled by Bluetooth with a HC_05 module and also by an Adafruit motor shield."
author: "karthik2006"
category: ""
tags:
  - "bluetooth"
  - "car"
views: 2775
likes: 0
price: 2450
difficulty: "Easy"
components:
  - "1x Arduino MotorShield Rev3"
  - "1x DC motor (generic)"
  - "1x Jumper wires (generic)"
  - "1x Arduino UNO"
tools: []
apps:
  - "1x Arduino IDE"
downloadableFiles:
  - "https://projects.arduinocontent.cc/1bd1d538-fc49-4ec0-aafa-c1fcade3272e.ino"
documentationLinks: []
passwordHash: "69b21779d0dc0246c0311c2d6bf398a212b2ce9531652a0d19f95e1401d0687e"
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seoDescription: "Build a Bluetooth car using HC_05 module and Adafruit motor shield. Simple Arduino robotics project."
videoLinks: []
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/default.jpg"
lang: "en"