Quote Originally Posted by Dougn0782 View Post
Press and hold the button > This activates a relay for each of the boards > The relay closes a circuit that inputs to the Arduino board > The Arduino is running a keyboard code to repeat the keypress ever 20ms. The keypresses are sent to each PC separately. All I have to do is hold the button down (pedal in my setup) and the DPS assist my tank and cast away.
Holding down a key to repeat a command is against the rules of the game.