You would not be able to control the elektraDRIVE or REV2 motors with the Second Shooter or Second Shooter Plus controller. The SS/SS+ system uses digital encoded motors, the elektraDRIVE motors are NOT encoded.
You could used the SS/SS+ controller and SS slider motor to control the slider movement, then you would use the Oracle with the Rev2 to control the pan/tilt movement. Going this route, you would have the base of the SS/SS+ system, and then could add the SS pan/tilt or soon to be released Digital Rev pan/tilt (similar form factor as Rev2, but with encoded motors) later in the future.
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