JDY–31 Bluetooth Module for Arduino

This bluetooth module is a working alternative for HC-05 or HC-06 at affordable price!

JDY-31 Bluetooth is based on Bluetooth 3.0 SPP design, which can support Windows, Linux, for android data transmission, working frequency 2.4GHZ, modulation mode GFSK, maximum transmission power 8db, maximum transmission distance 30 meters, support users to modify device name through AT command The baud rate and other instructions are convenient and quick to use. This Bluetooth module can only be used as a Bluetooth slave.

JDY-31 is a classic Bluetooth protocol that can communicate with Bluetooth-enabled computers (desktops, notebooks) and mobile phones (for android).
Windows computer Bluetooth serial port transparent transmission
For Android Bluetooth serial port transparent transmission
Smart home control
Automotive ODB testing equipment
Bluetooth toy
Share mobile power, share weight
Medical equipment

Parameters:

• Model: JDY-31
• Bluetooth version: Bluetooth 3.0 SPP
• Working frequency band: 2. 4GHZ
• Communication interface: UART
• STM connection temperature: <260 degree
• Operating voltage: 1.8-3.6V (3.3v recommended)
• Operating current not connected: 4. 7mA
• Working temperature: -40~80 degree
• Current after BLE connection: 7.3mA
• Antenna: Built-in PCB antenna
• Transmit power: 8db (Max)
• High transmission distance: 30 meters
• Receive sensitivity: -97dbm
• Master-slave support: slave
• SPP maximum throughput: 16K bytes/s (for android, windows)

JDY-31 support patch and solder pin header

Needle pin application: The pin header specification is standard 2.54 pitch pin header, just need to weld 5 pin holes on the module.
SMD application: Generally, only four pins of VCC, GND, RXD and TXD need to be connected. If you need to disconnect actively in the connection state, send AT+DISC in the connection state.