I am trying to run this sample program, http://www.robot-electronics.co.uk/files/arduino_md25_serial.ino , which I got from the Devantech website. My hardware is hooked up as in this diagram: Arduino Examples RD02 Motor Controller serial (Scroll down to the "MD25 RD02 Motor Controller Serial.") The program compiles correctly, but when I upload it, nothing happens to the motor or LCD screen...it all just sits there and does nothing. Is it waiting for a button-push or something? How do I get the motors running, using this code? I only have 1 of the 2 motors hooked up.