The Pololu Tic T249 Stepper Motor Controller is a versatile, easy-to-use USB-based microstepping controller for two-phase bipolar stepper motors up to 2.8 A per phase. It can drive a wide range of stepper motors, from small NEMA 11 or 14 motors to large NEMA 23 or 34 motors—or combinations of different motor sizes working together. The Tic T249 offers an especially wide range of microstepping modes, up to 256x, maximizing torque and precision while minimizing motor noise and vibration. The controller's USB connection allows you to write your own sketches in the Arduino IDE, or you can use the included Tic Control Center software, which makes programming the controller incredibly easy. No matter what your application, the Tic T249 Stepper Motor Controller can provide a powerful, efficient, and cost-effective solution.