Sorry! My math used a 60 degrees turn to both sides and the Voltages are not correct, as the turns should be only 30 degrees. To get as large as possible voltageswing set the potentiometer to lowest walue where you are still sure not to hit the mechanical stop of the potentiometer when turning fully. During calibration turn less to one side to compensate for the unlinearity. See "newpotmeter60" drawing attached. This works for myOne way of getting around the 60-degrees potentiometer problem:View attachment 48676