JDY-67 Dual-mode Bluetooth Audio Module

JDY-67 Dual-mode Bluetooth Audio Module is a high-integration solution designed to quickly add wireless audio streaming and data transmission capabilities to your electronics projects. Unlike single-mode modules, the JDY-67 supports both classic Bluetooth 3.0/4.0 (for high-quality audio streaming) and Bluetooth Low Energy (BLE) for efficient data communication. This dual-capability makes it exceptionally versatile, allowing users to build everything from compact wireless speakers to advanced IoT devices that require both music playback and configuration via a smartphone app. With an integrated amplifier circuit, straightforward connectivity, and a small form factor, this module offers a professional-grade audio solution without the complexity of a full Bluetooth stack implementation.

Key Features:

• Dual-Mode Operation: Supports both Bluetooth Classic (A2DP, AVCTP, AVDTP, AVRCP) for stereo audio streaming and BLE (GATT) for data communication.
• High-Quality Audio: Utilizes the classic Bluetooth protocol to ensure clear, high-fidelity wireless music playback.
• Integrated Amplifier: Features a built-in power amplifier capable of directly driving small speakers or headphones, simplifying the circuit design.
• Simple AT Command Configuration: Users can configure the device name, password, and working mode using simple AT commands sent via the serial port.
• Low Power Consumption: The BLE mode enables efficient data transfer for IoT applications, extending battery life in portable products.
• Line/MIC Input: Includes dedicated pins for line-in or microphone input, supporting basic recording or hands-free calling functionality.

Technical Specifications:

• Bluetooth Version: V3.0 + EDR (Classic) and V4.0/4.2 (BLE)
• Operating Voltage: DC 3.3V – 4.2V (typically 3.7V)
• Max Transmission Distance: Up to 15 meters (open space)
• Working Current: ~10-20 mA (Connected, streaming audio)
• Sensitivity: -90 dBm
• Supported Profiles: A2DP, AVRCP, HFP (Hands-Free Profile)
• Interface: UART (Serial Port) for configuration.

Mechanical Specifications:

• Module Type: Compact SMD/SMT module with castellated holes for easy PCB integration.
• Antenna: Onboard PCB antenna.
• Connector: Standard 1mm pitch pins for soldering or use with a breakout board.

Dimensions:

• Module Length: ~20 mm
• Module Width: ~15 mm
• Module Thickness: ~3 mm

Pinout and Wiring:

• VCC: Power supply input (3.3V to 4.2V).
• GND: Ground connection.
• TX/RX: UART Transmit and Receive pins (used for AT commands).
• L/R OUT: Left and Right Audio Output pins for connecting to speakers or a larger external amplifier.
• LINE_IN_L/R: Left and Right input pins for external audio source (e.g., analog input).
• MIC_P/MIC_N: Differential input for a microphone (for hands-free applications).
• Wiring Note: Power the module with a stable 3.7V lithium battery or regulated supply. Connect the TX/RX pins to a microcontroller for configuration, but the module operates independently for simple audio streaming.

Datasheet Reference:

• Download Datasheet (Note: Replace with actual manufacturer link)

Commonly Used in:

• Portable Audio Devices: The primary choice for developing small, battery-powered Bluetooth speakers and headphones.
• Home Automation: Integrating wireless audio into smart mirrors, intercom systems, or custom announcement systems.
• Retrofitting Projects: Easily upgrade vintage stereos or wired speakers to modern wireless Bluetooth capability.

Applications:

• DIY Bluetooth Speakers: Build custom, rechargeable stereo speakers with reliable connectivity.
• Wireless Intercoms: Create short-range wireless communication devices using the microphone and audio features.
• Configuration Apps: Use the BLE data mode to send configuration settings from a smartphone app while maintaining high-quality audio streaming via Classic Bluetooth.
• Audio Data Logging: Combine the module with a microcontroller to log environmental sounds or voice commands.

Equivalent Models:

• HC-05/HC-06 (Classic Data Only): These offer only serial data and lack audio capability.
• HM-10 (BLE Data Only): A popular module for BLE data but does not support classic stereo audio streaming.
• BK3259: Another common chip used in high-integration audio modules with similar dual-mode features.

Package Includes:

• 1 x JDY-67 Dual-mode Bluetooth Audio Module