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My stepper motor is running hot to the touch. Is there something wrong? Stepper motors are designed to run hot. Our Hybrid stepper motors are rated to run in an ambient temperature range of 20 degrees C to 50 degrees C and can have a temperature rise of 80 degrees C. It What is the difference between a closed loop stepper motor controller and an open loop stepper motor controller? In an open loop stepper motor controller, there is no feedback going from the motor to the controller, so the controller cannot make any necessary adjustments. This type of controller is effective wh What is the difference between Unipolar and Bipolar motors? A traditional unipolar wound motor has six lead wires. Each winding has a center tap. Unipolar wound motors are typically used in applications requiring high speed and high torque. A traditional bipo When should I use microstepping? Typically microstepping is used in applications requiring the motor to operate at less than 700 PPS. At low pulse rates, stepper motors to less smooth and often vibrate.