Is there a simple adapter that converts the signal into a direct current signal? Would like to replace a stepper motor on a camera with a DC motor that rotates either forward or backward. I don't want to build a mechanical adapter. The adapter would then be a smaller arm on the stepper motor, which presses a button for counterclockwise rotation of the DC motor when turning to the left and an adapter that presses a button for clockwise rotation when turning to the right.