JDY-31B Bluetooth 3.0 SPP Module w/ Base Plate
JDY-31B Bluetooth 3.0 SPP Module w/ Base Plate - Image 2
SKU: IOWC-0070
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JDY-31B Bluetooth 3.0 SPP Module w/ Base Plate

₹117.00 (Inclusive of all taxes)
Out of Stock

The JDY-31B is a Bluetooth 3.0 SPP serial module mounted on a convenient base plate, offering transparent UART communication for Arduino, Raspberry Pi, and microcontroller projects. It operates on a 3.3V supply and is fully compatible with HC-05/HC-06 pinouts and AT commands for easy wireless integration.

Features

  • Bluetooth 3.0 SPP protocol for stable, low-latency serial data transmission, fully compatible with HC-05 and HC-06 modules.
  • Integrated base plate with clearly labeled pins (VCC, GND, TXD, RXD) for simplified wiring and rapid prototyping, reducing setup errors.
  • Wide 3.6V to 6V input range (with onboard regulator) and a recommended 3.3V logic level, suitable for most microcontroller systems.
  • Supports AT command configuration via UART interface for setting baud rates, device names, and pairing modes directly from your code.
  • Compact form factor with an effective communication range of up to 100 meters in open space, ideal for robotics and remote control applications.

Out of stock

Description

The JDY-31B Bluetooth module provides a robust wireless serial bridge for IoT and embedded systems. Based on Bluetooth 3.0 Classic technology, it implements the Serial Port Profile (SPP) to create a transparent, two-way data channel between a microcontroller’s UART and any Bluetooth-enabled host, such as a smartphone or computer. The module is pre-soldered onto a breakout board, offering immediate access to power, ground, transmit, and receive pins for hassle-free integration.

Engineered for reliability, the module features strong anti-interference performance and stable connectivity for continuous data streaming. Its low-power design and support for configurable baud rates up to 128000 make it versatile for applications requiring varying data throughput. The JDY-31B serves as a direct, pin-compatible upgrade or replacement for popular HC-05/HC-06 modules, enabling seamless migration in existing projects with enhanced convenience from the included base plate.

Key Features

  • Bluetooth 3.0 Classic with Serial Port Profile (SPP) for transparent serial communication.
  • Direct HC-05/HC-06 hardware and command set compatibility for easy project migration.
  • Pre-mounted on a breakout base plate with clearly labeled pins (VCC, GND, TXD, RXD, STATE, EN).
  • Configurable via AT commands over UART for setting parameters like baud rate, device name, and role.
  • Wide operating voltage range of 1.8V to 3.6V (DC) with an onboard voltage regulator supporting inputs up to 6V.
  • Compact footprint (44mm x 16mm x 6mm) suitable for space-constrained embedded designs.
  • Offers a practical wireless range of approximately 30 meters (up to 100m in ideal open conditions).

Applications

  • Wireless serial communication for Arduino, ESP8266, ESP32, and Raspberry Pi projects.
  • Remote control and telemetry for DIY robotics, drones, and RC vehicles.
  • Home automation systems for wirelessly connecting sensors, switches, and actuators.
  • Industrial data logging and wireless sensor networks (WSN) for monitoring equipment.
  • Replacement for HC-05/HC-06 modules in existing designs requiring a plug-and-play upgrade.

Technical Specifications

Wireless ProtocolBluetooth 3.0 Classic (SPP)
Chipset / ModelJDY-31B
Frequency Range2.4GHz ISM Band
RF Transmit PowerApprox. 8 dBm
Supply Voltage1.8V - 3.6V DC (3.3V Recommended), Module Input: 3.6V - 6V
InterfaceUART (TXD, RXD), AT Command Configuration
Default Baud Rate9600 (Configurable up to 128000)
Data SpeedUp to 16 KBytes/sec
Operating Temperature-40°C to +80°C
Dimensions (LxWxH)44 mm x 16 mm x 6 mm
Weight4 grams

Frequently Asked Questions

How do I configure the JDY-31B module using AT commands?

Connect the module's VCC to 3.3V-5V, GND to ground, and the TXD/RXD pins to your microcontroller's UART crosswise (module TXD to MCU RXD). Set your serial monitor to the default baud rate (often 9600) and send commands like 'AT' to check connectivity, 'AT+NAME?' to read the device name, or 'AT+BAUD?' to check the baud rate. Ensure the module is in command mode by holding the KEY/EN pin high or following the specific datasheet procedure before sending AT commands.

What is the power supply requirement for the JDY-31B module?

The JDY-31B module's core operates at 1.8V to 3.6V DC, with 3.3V being the recommended logic voltage. The included base plate typically has a voltage regulator, allowing you to supply a wider input range of 3.6V to 6V. Always verify the pinout on your specific base plate. Exceeding the maximum voltage without a regulator can damage the Bluetooth chip. For stable operation, use a clean 3.3V supply from your microcontroller or a dedicated regulator.

Can I use this JDY-31B module as a direct replacement for an HC-05 or HC-06?

Yes, the JDY-31B is designed as a hardware and software-compatible replacement for HC-05 and HC-06 modules. It uses the same Serial Port Profile (SPP), operates on the same 3.3V logic level, and supports the standard AT command set for configuration. The pinout (VCC, GND, TXD, RXD) is identical, allowing you to drop it into existing HC-05/HC-06 sockets or PCB footprints. The added base plate simply makes wiring more convenient but does not alter the fundamental serial communication protocol.

Package Includes

  • 1 x JDY-31B Bluetooth Module with Base Plate

Additional Information

Weight 0.004 kg
Dimensions 4.4 × 1.6 × 0.6 cm

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