Hi Lucas-Are you looking for a power supply or a driver?The power supply is just a source of DC voltage that supplies power to the driver, which in turn drives the stepping motor. Once you've determined the voltage and current ratings of the power supply you might want to take a look at the Mean Well brand of power supplies. Both their open frame and enclosed AC to DC power supplies will work well.As for the driver, it takes logic-level signals from the controller to switch the power to the coils in the stepping motor. If you don't have a controller, you'll need that too. At minimum, a controller accepts a "direction" input and a "step" input to control the motor. Obviously, the "direction" input tells it which direction you want the motor to move, and the "step" input tells the motor to advance one step in that direction. Most controllers have several other inputs to adjust how far the motor moves per step (full step, half step, microstep, etc.), and inputs to adjust how much current is delivered to the motor.Many drivers have built-in controllers.If you're just starting out with stepping motors you might want to buy both the motor and the driver/controller from the same supplier, and before ordering ask them to make sure the driver and motor are sized properly to work together.-Rick
