HC-06 Bluetooth Module

The HC-06 Bluetooth Module is a popular and cost-effective solution for adding wireless serial communication to your electronics projects. Operating on the classic Bluetooth 2.0 SPP (Serial Port Protocol), it allows seamless data exchange between Arduino, Raspberry Pi, NodeMCU, or any microcontroller with UART capability and devices such as smartphones, tablets, or PCs.

Its simple AT command configuration and compact design make it ideal for IoT projects, wireless control, robotics, and sensor data transmission.

🔹 Key Features

• Bluetooth 2.0 + EDR: Supports Serial Port Profile (SPP) for transparent UART communication.

• Slave Mode: Acts as a Bluetooth slave device for pairing with a master (phone/PC).

• Easy Configuration: AT commands for setting name, baud rate, and PIN.

• Stable Connection: Reliable range of up to 10 meters (line of sight).

• Low Power Consumption: Ideal for battery-powered applications.

• Simple Wiring: Standard 4-pin interface (VCC, GND, TXD, RXD).

🔹 Technical Specifications

• Bluetooth Protocol: Bluetooth v2.0 + EDR, SPP profile

• Operating Voltage: 3.3 V–6 V DC (recommended 3.6–5 V)

• Logic Level: 3.3 V (TX/RX)

• Default Baud Rate: 9600 bps (configurable via AT commands)

• Default PIN Code: 1234 (configurable)

• Communication Range: Up to 10 m (open space)

• Current Consumption: ~30 mA during connection

• Dimensions: ~28 mm × 15 mm × 2.5 mm

• Operating Temperature: –20 °C to +75 °C

🔹 Applications & Use Cases

• Wireless Data Logging: Stream sensor data to a smartphone or PC.

• Robotics Control: Send commands to Arduino and Accessories based robots.

• IoT Devices: Pair with NodeMCU or ESP32 for smart automation.

• Home Automation: Control appliances or lights wirelessly via a mobile app.

• Educational Projects: Ideal for students learning about serial communication and Bluetooth technology.

🔹 Advantages for Makers & Engineers

• Works out-of-the-box with most microcontrollers using UART.

• Broad community support and numerous Arduino libraries.

• Compact form factor makes it easy to integrate into existing designs.

🔹 Safety & Precautions

• Ensure level shifting when connecting TX/RX to 5 V logic controllers.

• Keep module away from strong RF interference for a stable connection.

• Pair only with trusted devices to maintain security.

🔗 Helpful Internal Links

• Explore Electronics Components for complementary sensors and modules.

• Check Tools and Accessories for soldering and assembly tools.

🎥 Video Tutorial

[YouTube tutorial link here]

📝 Product Summary

The HC-06 Bluetooth serial module provides simple, low-cost wireless UART communication for Arduino, Raspberry Pi, and IoT applications, perfect for robotics, home automation, and wireless data transfer.