int ledPin =  13;  
int i=0;
void setup()   {                
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);     
}
void loop()                     
{
  i=i+1;
  Serial.println(i,DEC);
  digitalWrite(ledPin, HIGH);   
  delay(500);           
  digitalWrite(ledPin, LOW);    
  delay(500);              
}
Then I plugged the Arduino into the Chumby One USB port, I turned on the Chumby sshd, ssh'ed into the Chumby One, and did this:
stty -F /dev/ttyUSB0 9600
while true; do
        read LINE < /dev/ttyUSB0
        echo $LINE
done
And boom, I started seeing data coming in from the Arduino.  Wow, that was simple! 
Next to get a USB hub so I can have the USB drive with Chumby Python & PySerial on it as well as connecting the Arduino.  I assume that would work...
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