Controls the position, velocity and acceleration of one bipolar stepper motor Connects directly to a computer's USB port Requires an external 10 to 30VDC power supply RoHS Compliant The PhidgetStepper Bipolar Stepper Motor Controller allows you to control the position, velocity, and acceleration of one bipolar stepper motor. It can be used in applications that require very precise positioning. This is also the product you want to use to control larger industrial steppers or for applications that need a lot of torque. Features Controls the position, velocity, and acceleration of 1 bipolar stepper motor Provides very precise positioning Board is isolated from USB to prevent ground loops On-board fuse protects board from over-current conditions Connects directly to a computer's USB port Requires an external 10 to 30VDC power supply