user7328: as it is in the question, i need to know what is the size of the biggest string that i can send using the serial port to the arduino.
Thank you

user2881: That would be 64 bytes, providing the buffer is fully empty. See https://github.com/arduino/Arduino/blob/master/hardware/arduino/avr/cores/arduino/HardwareSerial.h#L42-L43

7328: <p>as it is in the question, i need to know what is the size of the biggest string that i can send using the serial port to the arduino.<br>
Thank you</p>
 2881: <p>That would be 64 bytes, providing the buffer is fully empty. See <a href="https://github.com/arduino/Arduino/blob/master/hardware/arduino/avr/cores/arduino/HardwareSerial.h#L42-L43" rel="nofollow">https://github.com/arduino/Arduino/blob/master/hardware/arduino/avr/cores/arduino/HardwareSerial.h#L42-L43</a></p>
