Bluetooth 3.0 Module with SPP Transparent Transmission/Compatible with HC-05,06 Slave Devices/JDY-31 Bluetooth Serial Module
Price range: $1.60 through $1.86
Please send RFQ to service@omaginetech.com
Description
The JDY-31 Bluetooth serial module, compatible with HC-05/06 slave devices, is designed based on Bluetooth 3.0 SPP (Serial Port Profile), enabling data transparent transmission with Windows, Linux, and Android systems. Operating in the 2.4GHz frequency band with GFSK modulation, it boasts a maximum transmission power of 8dB and a maximum transmission distance of 30 meters. Users can conveniently modify device names, baud rates, and other settings via AT commands, providing ease of use and flexibility. This Bluetooth module can only function as a Bluetooth slave device.
Product Basic Parameters:
|
Model |
JDY-31 |
|
Operating Frequency Band |
2.4GHZ |
|
Communication Interface |
UART |
|
Operating Voltage |
3.6-6V (5V recommended) |
|
Operating Temperature |
-40℃ – 80℃ |
|
Antenna |
Built-in PCB Antenna |
|
Transmission Distance |
30 meters |
|
Master/Slave Support: |
Slave |
|
Module Dimensions |
19.6 * 14.94 *1.8 mm(L x W x H) |
|
Bluetooth Version |
Bluetooth 3.0 SPP |
|
STM Soldering Temperature |
<260℃ |
|
Standby Current (Unconnected) |
4.7mA |
|
Operating Current (Connected) |
7.3mA |
|
Transmission Power |
8db（max） |
|
Reception Sensitivity |
-97dbm |
|
SPP Maximum Throughput |
16K bytes/s(android、windows) |
Application Scope:
The JDY-31, adhering to the classic Bluetooth protocol, can communicate with Bluetooth-enabled computers (desktops, laptops), and Android phones. It can be applied in various fields such as:
- Bluetooth serial port transparent transmission for Windows computers
- Bluetooth serial port transparent transmission for Android devices
- Smart home control
- Automotive OBD detection equipment
- Bluetooth toys
- Shared mobile power banks and weight scales
- Medical instruments
Pin Function Description:
|
STATE |
Connection status pin (low level when unconnected, high level when connected) |
|
RXD |
Serial input pin (TTL level) |
|
TXD |
Serial output pin (TTL level) |
|
GND |
Power ground |
|
VCC |
Power supply (supports 3.6-6V) |
|
EN |
Not used |
Product Dimensions:
Pin Interface:
JDY-31 Supports Both SMD and Soldered Pin Headers
-
Application of Pin Headers: The pin headers used are standard 2.54mm pitch, and only require soldering to 5 pin holes on the module.
-
Application of Surface Mount Devices (SMD): Typically, only 4 pins need to be connected: VCC, GND, RXD, and TXD. If you need to actively disconnect while in a connected state, send “AT+DISC” while connected.
|
Pin Numbers |
Functions |
Descriptions |
|
1 |
TXD |
Serial output pin (TTL level) |
|
2 |
RXD |
Serial input pin (TTL level) |
|
3 |
CTS |
|
|
4 |
RTS |
|
|
5 |
NULL |
|
|
6 |
NULL |
|
|
7 |
NULL |
|
|
8 |
NULL |
|
|
9 |
SWI |
|
|
10 |
NULL |
|
|
11 |
RST |
Reset (active low) |
|
12 |
VCC |
Power supply (1.8-3.6V) |
|
13 |
GND |
Ground |
|
14 |
EN |
|
|
15 |
ALED |
Broadcast status pin (flashes when unconnected, outputs high level when connected) |
|
16 |
STAT |
Connection status pin (low level when unconnected, high level when connected) |
|
17 |
SELECT |
|
|
18 |
NULL |
|
|
19 |
NULL |
|
|
20 |
NULL |
|
|
21 |
NULL |
|
|
22 |
NULL |
|
|
23 |
NULL |
|
|
24 |
NULL |
When sending AT commands via the serial port of the JDY-31 module, it is imperative to include the \r\n sequence. Below are the default functions of the commands
|
Number |
Command |
Function |
Default |
|
1 |
AT+VERSION |
Version number |
JDY-31-V1.2 |
|
2 |
AT+RESET |
Soft reset |
|
|
3 |
AT+DISC |
Disconnect (valid when in connected state) |
|
|
4 |
AT+LADDR |
Query the MAC address of the module |
|
|
5 |
AT+PIN |
Set and query the connection password |
1234 |
|
6 |
AT+BAUD |
Set and query the baud rate |
9600 |
|
7 |
AT+NAME |
Set and query the broadcast name |
JDY-31-SPP |
|
8 |
AT+DEFAULT |
Restore factory settings |
|
Compatibility and Performance Comparison between JDY-30 and JDY-31:
|
|
JDY-30 |
JDY-31 |
|
|
Working Current |
19mA |
7.3mA |
|
|
Transmission Rate |
8KByte |
16KByte |
|
|
2 |
JDY-30 has slower search speed |
JDY-31 has faster search and connection speeds |
JDY-31 has obvious advantages |
JDY-30 will be phased out and replaced by JDY-31 in the future.
Additional information
| Weight | 0.05 kg |
|---|---|
| Type | SMD (Surface Mount Device) Type, With Base Plate Pin Type (4-Pin), With Base Plate Pin Type (6-Pin) |
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