why start serial with 115200 baud

hi !

i have a Question About https://www.roboremo.com/projects/arduino/arduino-bluetooth-l298n

there will be write

Code:

 delay(500); // wait for bluetooth module to start

  Serial.begin(115200);
  // My Bluetooth default baud is 115200
  // If your Bluetooth uses other baud rate,
  // then you must modify it here,
  // otherwise it will not work.
  // for HC-05/06 it is usually 9600
 
  pinMode(EN_1, OUTPUT);

i understand that is required to Change the baud depend to use Bluetooth device - but why you start

Code:


  Serial.begin(115200);


why not direct by 9600?

regards Jan

You probably mean the code where I switch the baudrate:

Code:


bluetooth.begin(115200); // Bluetooth default baud is 115200
bluetooth.print("$");
bluetooth.print("$");
bluetooth.print("$"); // enter cmd mode
delay(250); 
bluetooth.println("U,9600,N"); // change baud to 9600
bluetooth.begin(9600);



Yes, that is confusing and I must change it or explain better, sorry

I used the BlueSMiRF module with default baud rate of 115200 and the command "U,9600,N" was TEMPORARLY changing it to 9600. This way the code is compatible with both BlueSMiRF and (some) HC-05 that default to 9600.

Of course if you use a specific module, you can use directly its baudrate.

Regards,
Victor

post in wrong article!



Jan