potentiometer to max via arduino uno

wtf? reply just vanished?

Anyhoo
disclaimer: not familiar with Mavericks, but . . .

Ensure you have the correct driver installed:

http://www.ftdichip.com/Drivers/VCP.htm

Load the Standard Firmata (File/Examples/Firmata) onto the board, and go Tools/Board and Tools/Serial Port/ dev/tty . . .

Maxuino should behave.

Otherwise, do all of the above, leaving out Standard Firmata and Maxuino, then load this onto the board:

/*use the serial monitor window in Arduino to
verify the min and max values from the pot;
enter these values below
*/
int readPin = 0; //connect centre pin of pot to A0
int potRead; //variable to store the reading
int potMin = 0; //lowest pot value
int potMax = 1023; //highest pot value

void setup(){
Serial.begin (19200); //must match the argument to the serial object
}

void loop(){
potRead = analogRead(readPin); //read A0
potRead = map(readPin, potMin, potMax, 0, 255); //map onto 8 bit value
Serial.println(potRead); //delete this line and uncomment the next to send to Max
//Serial.write(potRead); //send to Max
delay(50); //samplerate = 20Hz
}

Use the "print" message to the serial object in Max to detect the available ports (see the Help file), and poll it with a [metro 50].

Should be ok.

Brendan