HC-06 Bluetooth Module

The HC-06 Bluetooth Module is a cost-effective, easy-to-use Bluetooth-to-serial (UART) interface module designed for wireless communication between microcontrollers and Bluetooth-enabled devices. Ideal for a wide range of applications, including DIY electronics projects, robotics, and home automation, this module provides a reliable and straightforward way to add Bluetooth functionality to your projects.

Key Features:

• Simple and Efficient Communication: The HC-06 module supports a UART interface, making it easy to establish wireless serial communication with microcontrollers such as Arduino, Raspberry Pi, and other embedded systems.
• Bluetooth 2.0 Technology: Utilizes Bluetooth 2.0 protocol, ensuring stable and fast data transmission with low power consumption, perfect for projects that require consistent wireless connectivity.
• Slave Mode: Operates exclusively in slave mode, making it an ideal choice for devices that need to connect to a Bluetooth master device such as smartphones, tablets, or PCs.
• Built-In LED Indicator: The module features an LED indicator that provides visual feedback on the connection status, simplifying debugging and setup.
• Wide Compatibility: Works seamlessly with various operating systems, including Android, Windows, and Linux, providing flexibility for different development environments.
• Compact Design: The small form factor (27mm x 13mm) makes it easy to integrate into space-constrained projects, from wearable electronics to compact IoT devices.
• Preconfigured Settings: Comes with default baud rate settings of 9600 bps, making it quick and easy to start communication. The settings can be changed using AT commands if needed.

Technical Specifications:

• Bluetooth Protocol: Bluetooth 2.0+EDR (Enhanced Data Rate)
• Operating Voltage: 3.3V to 5V
• Operating Current: 30mA
• Default Baud Rate: 9600 bps (Configurable using AT commands)
• Range: Up to 10 meters (line of sight)
• Operating Mode: Slave mode only
• Dimensions: 27mm x 13mm x 2.2mm

Applications:

• Wireless Data Transmission: Use in applications where wireless communication is needed between microcontrollers and Bluetooth-enabled devices, such as wireless sensors, remote monitoring systems, or data logging projects.
• Home Automation: Control and monitor home appliances and systems remotely using Bluetooth connectivity.
• Robotics: Enable wireless control of robots and other automated systems, allowing for remote command execution and real-time data feedback.

DIY Electronics Projects: Perfect for hobbyists looking to add Bluetooth capabilities to their projects, from smart home devices to custom-built gadgets.

Connectivity:

The HC-06 Bluetooth module does not require a logic-level filter because it features built-in level-shifting circuitry. This circuitry supports both 3.3V and 5V logic levels, ensuring compatibility with controllers like the ESP32, Teensy, or Arduino. Employing a simple Serial communications interface, the module connects easily to other controllers via TX/RX pins.

Pinout Diagram:

The pin descriptions of the Bluetooth module are shown below.

Example Wiring Diagram with Arduino Uno

Uses:

• Wireless communication
• Robotic control

Documentation:

The HC-06 Bluetooth module uses the software serial library.

• Arduino IDE library.