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Bluetooth Bee

Save that extra Arduino you have lying around for another project, this two-for-one device has the Arduino built-in. Bluetooth Bee with Arduino is an enhanced version of the Bluetooth Bee. We added an onboard ATMEGA168 to it to make it a full-featured Arduino while maintaining the same footprint and instruction set as the Bluetooth Bee. Plus, it still allows you to stack it on XBee Carrier, XBee® Shield, and UartSBee for expansion or reprogramming.


  • Small footprint
  • Identical settings and pairing methods as the Bluetooth Bee
  • Software serial port adopted between the Bluetooth module and ATMEGA168
  • Remains compatibile with XBee Carrier, XBee® Shield, and UartsBee for expansion

Hardware Features

  • Typical -80dBm sensitivity.
  • Up to +4dBm RF transmit power.
  • Fully Qualified Bluetooth V2.0+EDR 3Mbps Modulation.
  • 3.3v Power
  • Integrated PCB antenna.
  • Disconnect and monitor the Bluetooth via Software.
  • xBee compatible headers.

Software Features

  • Use the SoftSerial program to communication.
  • Default Baud rate: 38400, Data bits:8, Stop bit:1,Parity:No parity, Data control: has.
  • Supported baud rate: 9600,19200,38400,57600,115200,230400,460800.
  • Use CTS and RTS to control the data stream.
  • Disconnecte the Bluetooth via a rising edge on PC2
  • Status instruction port PB2: low-disconnected, high-connected;
  • PIO10 is connected to red led, PIO11 is connected to blue led. When master and slave are paired, red and blue led blinks 1time / 2s in interval, while disconnected only blue led blinks 2 times/ s.
  • Auto-connect the last device on power as default.
  • Permit matched device connect by default.
  • Default PINCODE:”0000”.
  • Auto-reconnect in 30 min when disconnected as a result of beyond the range of connection.

Application Ideas

  • Arduino compatilbe module with Bluetooth communication.
*3.3 V power needed.
* While using with UartSBee, set the operation voltage to 3.3V
* Command to change baud rate is persistent even after reset. Hence remember the baud rate for next use.

Pin definition and Rating


  • PD4 - PD7 = Arduino IDE digital pins 4 - 7 (5,6 PWM)

  • PB0 , PB1 = Arduino IDE digital pins 8 , 9 (9 PWM)

  • PC0 - PC3 = Arduino IDE analog pins 0 - 3 (Note PC2 Disconnects the Bluetooth via a rising edge)


  • Step 1

Connect Grove-Red_LED and Bluetooth Bee-Standalone module to XBee carrier like this.

  • Step 2

Write a program by Arduino-IDE to read informations from the Bluetooth Softserial port and identify to shut or turn on the LED.

BluetoothBee Demo Code - Flowcontrol Based Implementation
2010,2011 Copyright (c) Seeed Technology Inc. All right reserved.

Author: Visweswara R Modify:Joinj

This demo code is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

For more details about the product please check


/* Upload this sketch to Seeeduino and press reset*/

#include <NewSoftSerial.h> //Software Serial Port
#define RxD 2
#define TxD 3


NewSoftSerial blueToothSerial(RxD,TxD);

void setup()
pinMode(RxD, INPUT);
pinMode(TxD, OUTPUT);

void loop()
unsigned char control;
unsigned char temp;
while(temp!='4') {;
Serial.println("You are connected");
blueToothSerial.print("You are connected"); //You can write you BT communication logic here
while(1) {;
switch(temp) {
case 'O':{while(temp!='N') {;} digitalWrite(5,HIGH);break;}
case 'S':{while(temp!='H') {;} digitalWrite(5,LOW);break;}

void setupBlueToothConnection()
blueToothSerial.begin(38400); //Set BluetoothBee BaudRate to default baud rate 38400
sendBlueToothCommand("\r\n +STPIN=0000\r\n");
delay(2000); // This delay is required.
delay(2000); // This delay is required.

//Checks if the response "OK" is received
void CheckOK()
char a,b;
a =;

if('O' == a)
// Wait for next character K. available() is required in some cases, as K is not immediately available.
b =;
if('K' == b)

while( (a = != -1)
//Wait until all other response chars are received

void sendBlueToothCommand(char command[])
  • Step 3

Connect the XBee carrier to computer with USB-cable and uploading the program to ATMEGA168 on the Bluetooth Bee-Standalone.

  • Step 4

Remove the USB-cable form XBee carrier and connect the 3.7-Voltage battery to XBee carrier like this.

  • Step 5

Additional ideas

Schematic Online Viewer


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