do I need to specify a string or a command that is used to program the Arduino board via the Arduino software?
* Dimmer * by David A. Mellis * * Demonstrates the sending data from the computer to the Arduino board, * in this case to control the brightness of an LED. The data is sent * in individual bytes, each of which ranges from 0 to 255. Arduino * reads these bytes and uses them to set the brightness of the LED. * * http://www.arduino.cc/en/Tutorial/Dimmer