HC-05 Bluetooth Module for Wireless Communication Projects

The HC-05 Bluetooth Module is a powerful and affordable solution for enabling wireless serial communication between microcontrollers like Arduino, Raspberry Pi, ESP32, and other embedded systems. It supports Bluetooth 2.0 + EDR protocol and works in both master and slave modes, making it highly versatile for a wide range of IoT and automation projects.

With onboard 3.3V regulator and serial TTL interface, the HC-05 is easy to integrate into most systems. The module has a communication range of up to 10 meters, and it’s ideal for wireless data transmission, remote control, and device-to-device communication.

Whether you’re designing a home automation system, building a Bluetooth-controlled robot, or enabling wireless configuration for your IoT devices, the HC-05 provides reliable performance with simple setup.

✅ Key Features:

• Supports Bluetooth 2.0+EDR (Enhanced Data Rate)

• Master/Slave mode configuration

• Serial communication (TTL) interface

• Baud rate: 9600 (default, configurable)

• Operating voltage: 3.3V logic (tolerant up to 5V)

• Range: up to 10 meters

• Built-in LED indicator for connection status

🛠️ Applications:

• Wireless communication for Arduino & Raspberry Pi

• Bluetooth-based robots and remote controls

• IoT device configuration & communication

• Wireless sensor data logging systems

• Bluetooth home automation controls

• PC-to-microcontroller serial bridges