About this item

📡 Bluetooth Module HC-05

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🔹 Description

The HC-05 Bluetooth Module is a powerful and easy-to-use wireless communication module that enables your microcontroller projects to communicate over Bluetooth 2.0 SPP (Serial Port Protocol). It supports both Master and Slave modes, making it ideal for embedded systems, robotics, and IoT applications.

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📑 Technical Details

⚙️ Features

• 📶 Bluetooth 2.0 + EDR module with SPP (Serial Port Profile)
• 🔄 Supports Master & Slave configuration
• 🖧 Communication via UART (3.3V TTL) interface
• 📈 Baud rate: Default 9600 bps (configurable up to 1382400 bps)
• 🔌 Operating Voltage: 3.6V–6V (logic level 3.3V)
• 🔋 Low power consumption, long-range stable communication (~10 meters)

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🛠️ Applications

• 🤖 Robotics & DIY electronics (Arduino, ESP32, Raspberry Pi)
• 📡 Wireless serial communication projects
• 📱 Smartphone-controlled devices
• 🔧 Home automation systems
• 🚗 Wireless data logging and remote control

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⚠️ Notes

• ✅ Requires 3.3V logic on RX pin (use a voltage divider if connecting to 5V MCU).
• ✅ Default pairing code: 1234 or 0000.
• 📘 Module LED indicates connection status (blinking = not connected, steady = connected).

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✨ Key Advantages

• 🔌 Simple UART interface for fast integration
• 🔄 Configurable via AT Commands
• 📱 Compatible with Android devices (not iOS by default)
• ⚡ Stable connection up to 10m range
• 💡 Ideal for wireless serial communication without extra hardware

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🔗 Useful Links

• 📄 HC-05 Datasheet (PDF)
• 💡 Arduino Example with HC-05