Smart Bluetooth Module Baseboard

This shield have LED indication light.

Input Voltage ： 3.3V-6V

Size : 16.3mm*39mm

Application :

This item can be used as a normal serial port bluetooth , and can communicate with PC、Mobile Phone etc.

This item can connect with kinds of serial port devices.

This item can be also expanded for second time with kinds of equipments such as GPS etc.

Note :

1、Master modules and slave modules can not switch mode from each other, and only can work as a single work mode

2、 The master modules can only use with this slave modules, and the master modules can not  match with other slave modules such as the computer、cell phones and other bluetooth device etc.

3、The slave modules can match with other slave modules such as the computer、cell phones and other bluetooth device etc.

4、 The master modules have the same At command with the slave modules except for "AT+NAME" , which means the slave modules have At command of "AT+NAME" and The master modules don't have.

Connection :

Click to download reference schematic diagram :


Click to download the Smart Bluetooth Shield schematic diagram

1、Specification

CSR chip : Bluetooth v2.0
Wave band : 2.4GHz—2.8GHz, ISM Band
Protocol : Bluetooth V2.0
Power Class : (+6dbm)
Reception sensitivity: -85dBm
Voltage : 3.3 (2.7V—4.2V)
Current : Paring - 35mA, Connected - 8mA
Temperature : -40℃~ +105℃
User defined Baud rate :  4800, 9600, 19200, 38400, 57600, 115200, 230400,
                                     460800,921600 ,1382400.
Dimension : 26.9mm*13mm*2.2mm

2、Usage

Coupled Mode: Two modules will establish communication automatically when powered.
PC hosted mode: Pair the module with bluetooth dongle directly as virtual serial.

 

Pin definition :

    * PIO8 connects with LED cathodea with 470ohm series resistor in between. LED NEGATIVE connects to ground. It is used to indicate the module state. After powered on, flashing intervals differ in different states.

    * PIO9 is used to control LED indicating paring. It will be steady on when paring is successful.

    * PIO11, module state switching pin. HIGH -> response to AT command; LOW or floating -> regular work status.

    * With build-in reset circuit, reset is completed automatically after powered on.

    * Steps to set to MASTER:

    * Set PIO11 HIGH with a 10K resistor in between.

    * Power on, module comes into AT Command Response Status

    * Open HyperTerminal or other serial tool, set the baud rate 38400, 8 data bits, 1 stop bit, no parity bit, no Flow Control

    * Via serial port, send characters "AT + ROLE = 1 r n",if successful, return "OK r n", where r n is carriage return.

    * Set PIO11 LOW, re-power, then in Master state, automatically search for slave module and connect.
 

 

Download the datasheet

Download the manual

Download the AT Command

下载pdf文档资料.pdf