I can't quite read the board next to the pins on the oscar board. They look like (from top to bottom +5v, Gnd, 1, 2).
The Opti-Wiz can handle three axes (three spinners, or a trackball and a spinner), vs. only one on the Oscar board (if I'm reading it right).
These should be the same:
Opti-Wiz board = Oscar board
use either "G" = Gnd
use either +5 = +5V
Use one axis:
For example
ZA for 1 and ZB for 2. If the spinner is moving the wrong way, you need to swap ZA and ZB.