This work explains the Importance of Micro stepper motor in various fields like military, medical applications, process control system, machine tools, manufacture of packaged foodstuffs, robotics, textile industry, integrated circuit fabrication and commercially used. So accurate control of stepper motor is necessary for these applications In general, stepper motors are driving in full step, half step and micro-step modes. In this wok for operating the micro step we used A3977 Driver. The A3977 translator converts the STEP and DIRECTION inputs into the control signals required to sequence the current in each of the two H-bridge outputs for full- half- quarter- and eighth-step micro stepping operation of a bipolar stepper motor. The A3977 is a complete micro stepping motor driver with built in translator for easy operation with minimal control lines. It is designed for operating bipolar stepper motors in full-, half-, quarter-and eighth-step modes.

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