HC-05 Bluetooth Module – Wireless Serial Communication Module for Arduino

The HC-05 Bluetooth Module is a compact wireless serial communication module designed for Arduino, microcontrollers, robotics, home automation, and DIY electronics projects. It allows compatible devices to communicate wirelessly over Bluetooth through a simple UART serial interface.

The HC-05 module is commonly used to add Bluetooth connectivity to Arduino and other microcontroller-based projects. It can be used for wireless data transfer, remote control applications, robotics, automation projects, and serial communication.

Features

HC-05 Bluetooth wireless communication module
Bluetooth serial communication
UART interface for easy microcontroller connection
Suitable for Arduino and compatible microcontrollers
Supports wireless data transfer
Compact and easy-to-use module
Suitable for robotics and automation projects
Useful for DIY and educational electronics projects

Specifications

Module: HC-05 Bluetooth Module
Communication: Bluetooth
Interface: UART / Serial
Logic Level: 3.3V TTL
Supply Voltage: Typically 5V through onboard regulator on common breakout boards
Bluetooth Version: Bluetooth 2.0 + EDR
Communication Mode: Serial wireless communication
Operating Range: Up to approximately 10 meters in open space
Antenna: PCB antenna
Status Indicator: LED

Applications

Arduino Bluetooth projects
Wireless serial communication
Robot control projects
Bluetooth-controlled robots
Home automation
Wireless data transfer
IoT and embedded projects
DIY electronics
Educational electronics projects

Compatibility

The HC-05 Bluetooth Module can be used with Arduino boards and other compatible microcontrollers that support UART serial communication. It is suitable for students, hobbyists, makers, engineers, technicians, and developers working on wireless electronics projects.

Important

Specifications can vary slightly between HC-05 breakout-board versions, especially supply-voltage handling and pin configuration. Please verify the module version before connecting it to your circuit.