I'm struggling to find out how to configure the AREF pin within MatLab 2014a. I have created an Arduino object ard = arduino(); Last time I interfaced the Arduino with MatLab it was in version 2013a, which is significantly different than the latest support package. For instance, the functions have changed names, and don't use . syntax. I've read the PDF that comes with the support packages, and there is no mention of a function that resembles or replaces ard.analogReference('external').