[Jeremy Germita]

here is a rough idea of the constructor

public void robotInit() {
  Arduino arduinoEx = new Arduino(CommsMode commsMode,int inChannel, int outChannel);
  Arduino arduinoAn = new Arduino(CommsMode.kAnalog, 1);    //Analog, channel 1
  Arduino arduinoDig = new Arduino(CommsMode.kDigital, 7, 8);  //Digital, Channels 7 and 8
  Arduino arduinoSer = new Arduino(CommsMode.kSerial, baudRate);  //Serial, baudRate
  Arduino arduinoI2C = new Arduino(CommsMode.kI2C, 1);
}

ControlMode - Analog(with a digital Pot), Digital(with the DIO pins of the crio and arduino), Serial, I2C, etc

int inChannel - Digital-the recieving pin
Analog-The input pin
Serial-Not Needed
I2C-The address on the bus

int OutChannel-Digital only- the sending pin

long BaudRate - Serial Only, self explanatory

I'll write something up in the library to show you how the constructors would work