Stepper motor driver

The invention discloses a stepper motor driver, and belongs to the field of fine control. The stepper motor driver comprises an embedded single-chip microcomputer, a drive module and a power module. The power module is connected with the drive module. The drive module is connected with the single-chip microcomputer. The stepper motor driver further comprises fault detection modules, an alarm module, communication modules and a storage module. The fault detection modules, the alarm module, the communication modules and the storage module are all connected with the embedded single-chip microcomputer. The communication modules include the RS485 module, the Zigbee module, the RS232 module and the Usb module. Through the communication modules, the stepper motor driver can conduct communication in various modes, so that the shortcoming of existing physical connection communication is overcome, and the stepper motor driver is capable of meeting different industrial requirements. Through the various fault detection modules, hidden troubles of the driver can be found in time, targeted alarms are given through the combination of the fault detection modules and the alarm modules, and therefore convenience is brought to daily maintenance of the driver.