Bluetooth Bee Standalone baud rate

Products & Technology Bee series & WSN
#1

I’ve been trying to set the baud rate on the BTB device, but the only one that seems to work is the default baud rate. It has all of these baud rates advertised “Supported baud rate: 9600,19200,38400,57600,115200,230400,460800”. What am I missing?

For example, I’m trying:

void setupBlueToothConnection()
{
blueToothSerial.begin(460800); //Set BluetoothBee BaudRate to default baud rate 38400
delay(1000);
sendBlueToothCommand("\r\n+STWMOD=0\r\n");
sendBlueToothCommand("\r\n+STNA=SeeedBluetooth-st\r\n");
sendBlueToothCommand("\r\n+STAUTO=0\r\n");
sendBlueToothCommand("\r\n+STOAUT=1\r\n");
sendBlueToothCommand("\r\n +STPIN=0000\r\n");
delay(2000); // This delay is required.
sendBlueToothCommand("\r\n+INQ=1\r\n");
delay(2000); // This delay is required.
}

#2

I tried using increasing the baudrate using the following as well:

blueToothSerial.begin(38400); //Set BluetoothBee BaudRate to default baud rate 38400
delay(1000);
sendBlueToothCommand("\r\n+STBD=115200\r\n");

Now the device is not functioning at all. Can’t get it back to default state. Why is this? I would like to know if only 38400 baud rate is supported with this device and how to recover the device after changing the baudrate to 115200.

#3

Have absolutely the same problems, need a support.

#4

Hm… seems I have solved this problem and return baud rate to default when uploaded this sketch:

#include <SoftwareSerial.h>
#define RxD 0 // 2
#define TxD 1 // 3

SoftwareSerial blueToothSerial(RxD,TxD);
void setup()
{
//  Serial.begin(9600); //Serial port for debugging, Comment this line if not required
  pinMode(RxD, INPUT);
  pinMode(TxD, OUTPUT);
  setupBlueToothConnection();
}

void loop()
{
  if(blueToothSerial.read() == 'a')
  {
  blueToothSerial.println("You are connected to Bluetooth Bee");
  //You can write you BT communication logic here
  }
}

void setupBlueToothConnection()
{
//  Serial.print("Setting up Bluetooth link"); //For debugging, Comment this line if not required
  blueToothSerial.begin(38400); //Set BluetoothBee BaudRate to default baud rate 38400
  delay(1000);

  sendBlueToothCommand("\r\n+STWMOD=0\r\n");
  sendBlueToothCommand("\r\n+STBD=38400\r\n"); 
  sendBlueToothCommand("\r\n+STNA=UMPT12\r\n");
  sendBlueToothCommand("\r\n+STAUTO=0\r\n");
  sendBlueToothCommand("\r\n+STOAUT=1\r\n");
  sendBlueToothCommand("\r\n+STPIN=0000\r\n");
  delay(2000); // This delay is required.
  blueToothSerial.print("\r\n+INQ=1\r\n");
  delay(2000); // This delay is required.
//  Serial.print("Setup complete");

}

void sendBlueToothCommand(char command[])
{
  char a;
  blueToothSerial.print(command);
//  Serial.print(command); //For debugging, Comment this line if not required
  delay(1000);
/*  
  while(blueToothSerial.available()) //For debugging, Comment this line if not required
  { //For debugging, Comment this line if not required
  Serial.print(char(blueToothSerial.read())); //For debugging, Comment this line if not required
  } //For debugging, Comment this line if not required
*/  
}
#5

But still dunno how to change it!

#6

Sorry, the example code doesn’t work for me.

Anybody know of a way to restore the BT Bee Standalone to its original settings?

#7
  1. bad new, it seems there is no command to reset to the original setting, you need to remember your last setting…
  2. the BT moduel supports more than 115200, but it does not mean the UART of mcu supports. especilly the software serial of arduino. Jenerally, i suggest you not setting baudrate more than 115200. i tested by senting “+STBD=230400” with PC and uartsbee, it returns “OK”, but very bad, there is no 230400 option on my PC comm terminal… so, now , it is dead…!~ help…
#8

I really wish I hadn’t seen this as I really want one now!
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#9

hey , maybe you can use this tool “putty” to reset your baud rate…but i have not used it yet… :unamused: