ShenZhen DX BT18 Users manual
User Manual
FCC ID: 2AKS8DX-BT18
Model Name: DX-BT18
Shenzhen DX-SMART Technology Co Ltd.
DX-BT18 Dual Bluetooth Module
Table Of Contents
1、Overview .................................................................................................................14
2、Module Default Parameters .................................................................................14
3、Application Area....................................................................................................14
Power consumption parameters
4、
5、Transparent Transmission Parameters ................................................................15
6、Module Pin Description And Minimum Circuit Diagram..................................16
...................................................................15
7、Pin Function Description ......................................................................................17
8、Detailed Description Of Function pins.................................................................18
9、Dimensions ...........................................................................................................18
LAYOUT
10、
11、AT COMMAND...................................................................................................19
11.1 Test Instructions .....................................................................................21
11.2 Get The Software Version……………...................................................21
11.3 Set/Query Module Bluetooth MAC……...............................................21
11.4 Set/Query Device Name.........................................................................21
11.5 Set/Query - Serial Port Baud Rate..........................................................22
11.6 Set/Query Pairing PIN............................................................................22
11.7 Query - UUID………………….............................................................23
Precautions
...................................................................................19
11.8 Set -Service UUID..................................................................................23
11.9 Set- NOTIFY UUID\ WRITE UUID.....................................................24
11.10 Set -WRITE UUID ..............................................................................24
11.11 Disconnect The Llink……....................................................................24
12、Contact Us...........................................................................................................24
1．Overview:
DX-BT18 dual-mode Bluetooth module is a dual-mode
Bluetooth module (Dual-Mode) that is specially designed for
smart wireless data transmission by Shenzhen DX-SMART
Technology Co., Ltd. and follows the Bluetooth 4.2 standard
protocol.
DX-BT18 module applies to wireless data transmission
field, uses BT4.2 Bluetooth chip + PCB printed antenna
design, SOC chip embedded BT4.2 Dual-Mode protocol stack,
supports data transmission of Windows, Linux, Android, iOS
and other systems And applications, with industrial design,
transmission distance, data stability, simple operation, high
cost performance and technology leading edge.
2．
Module default parameters
Bluetooth Protocol Bluetooth 4.2 BR/EDR+BLE -
Working Frequency 2402-248MHz
Communication Interface UART
Power Supply 3.3V
Communication distance 30-40M (Open and unobstructed environment)
Physical Dimension 27mm x 13mm x 2.35 mm
Bluetooth Authentication ROHS REACH FCC
Bluetooth Name DX-BT18
Pairing Code 1234 (The SPP agreement is valid)
Serial Port Parameters
Service UUID FFE0
Notify\Write UUID FFE1
Write UUID FFE2
：
9600、8 data bits、1 stop bit、No check、No flow control
Storage temperature
Work temperature
Custom requirements
MIN:-40℃ - MAX:+140℃
MIN:-20℃ - MAX:+85℃
If you have other special function requirements, you
can contact us to customize the module.
3．Application area:
DX-BT18 module supports BT4.2 SPP standard protocol, which can be paired with all
Bluetooth-enabled desktop computers, notebooks, Andriod mobile phones and Bluetooth main
module to achieve bidirectional data transmission and receiving; DX-BT18 module supports
BT4.2 BLE protocol at the same time , Can connect directly with iOS device with BLE Bluetooth
function, support background program resident operation.
Successful application of BT18 module:
※ Bluetooth wireless data transmission;
※ mobile phones, computer peripherals;
※ hand-held POS devices;
※ Medical equipment wireless data transmission;
※ smart home control;
※ car detection OBD equipment;
※ Bluetooth printer
※ Bluetooth Remote Control Toy
※ Anti-lost device, LED light control
4．Power consumption parameters:
DC-DC Average Current Unit
Discoverable 4.4 mA
Connected (BLE) 3.8 mA
Connected (SPP) 12 mA
5．Transparent transmission parameters
SPP data throughput:
Android ->BT18 -> UART UART ->BT18 -> Android BAUD
14400 bytes/s 7500 bytes/s 115200
BLE data throughput:
IPhone 6 ->BT18 -> UART UART ->BT18 -> IPhone 6
Baud rate 115200 Baud rate
Connection interval (ms) 15 Connection interval (ms)
115200
15
APP Serial packet size (bytes) 300 Serial packet size (bytes)
Transmission interval (ms) 20 Transmission interval (ms)
Throughput (bytes/s) 5000 Throughput (bytes/s)
300
50
5040
Characteristic Write method
Note: This table parameter is for reference only and does not represent the maximum data
throughput that the module can support.
Write without
Response
6.Module pin description and minimum circuit diagram:
7．Pin function description:
Pin number Pin name Pin description
1
2
3
4
5
6
7
8
UART_TX Serial data output
UART_RX Serial data input
UART_CTS Vacant
UART_RTS Vacant
GPIO4 Programmable input and output port
GPIO5 Programmable input and output port
VPP
ICE
Firmware upgrade port
VPP
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