RoboEssentials
HC-05 Bluetooth Module for Arduino, Robotics, Wireless & DIY Projects
HC-05 Bluetooth Module for Arduino, Robotics, Wireless & DIY Projects
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The HC-05 Bluetooth Module is a popular serial Bluetooth communication module for adding wireless connectivity to Arduino, microcontrollers, and robotics projects. It is ideal for Bluetooth-controlled cars, wireless sensor systems, home automation, and DIY electronics.
Technical Specifications
| Specification | Details |
|---|---|
| Module | HC-05 |
| Communication | Bluetooth |
| Bluetooth Version | Bluetooth 2.0 + EDR |
| Communication Interface | UART / Serial |
| Operating Voltage | 3.3V logic |
| Breakout Board Supply | Commonly 3.6V–6V, depending on board |
| Typical Range | Up to approximately 10 m in open conditions |
| Baud Rate | Configurable |
| Operating Mode | Master / Slave capable |
| Antenna | PCB antenna |
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Key Features
Key Features
Bluetooth wireless communication
Serial UART interface
Easy microcontroller integration
Suitable for Arduino projects
Ideal for robotics applications
Useful for wireless control
Compact module
Simple TX/RX communication
Suitable for DIY and educational projects
Popular choice for Bluetooth robot cars
Applications
Applications
Bluetooth-Controlled Robot
Bluetooth RC Car
Wireless Sensor Monitoring
Home Automation
Wireless Serial Communication
Robotics Projects
Smart Vehicle
Remote Control Projects
Arduino Projects
IoT Prototypes
Educational Electronics
Engineering Projects
DIY Automation
Package Includes
Package Includes
1 × HC-05 Bluetooth Module
Compatibility
Compatibility
Frequently Asked Questions
Frequently Asked Questions
Is HC-05 compatible with Arduino Uno?
Yes. It can communicate with Arduino Uno through its serial/UART interface.
Can I use it for a Bluetooth-controlled car?
Yes. It is one of the most common modules used for Bluetooth-controlled robot cars.
Can I connect it to an Android phone?
Yes, with a compatible Bluetooth serial application.
Does HC-05 support wireless serial communication?
Yes. UART data can be transmitted wirelessly over Bluetooth.
What is the difference between HC-05 and HC-06?
HC-05 modules are commonly configurable for master/slave operation, while HC-06 modules are generally intended for slave operation.
Can it work with ESP32?
It can be connected to an ESP32 through UART, although the ESP32 already has built-in Bluetooth on many boards.
What is the communication range?
A typical HC-05 setup can communicate over around 10 metres in open conditions, though actual range depends on the environment and module variant.
Can I change the baud rate?
Yes. The baud rate can generally be configured using the module's AT-command mode.
