A system and method for calibrating a vending apparatus is provided. A vertical base reference position of a selector arm is stored, wherein the vertical base reference position corresponds to one of a plurality of rows in a cylindrical storage device. A horizontal base reference position is stored, wherein the horizontal base reference position corresponds to a compartment identifier identifying a compartment within each of the plurality of rows. A position of the selector arm corresponding to a media storage compartment is also stored, wherein the position comprises a vertical position and a horizontal position. A motor is initiated to move the selector arm along a vertical axis, wherein a movement of the selector arm results in one of an increment and/or a decrement to the vertical position of the selector arm. A stepper motor is initiated to rotate the cylindrical storage device, wherein a rotation of the device results in one of an increment and/or a decrement to the horizontal position of the selector arm.