If you are looking for a way to simplify the process of controlling your stepper motor take a look at
Lin Engineering's Silverpak C. This integrated motor and controller is designed to allow for rapid implementation of step motors requiring automation.
Features:
• 2.0 Amp chopper (PWM) driver
• Operates from 12V to 40V
• RS232 or RS485 based communications
• Stand alone operation with no connection to a PC
• Single 4 wire bus linking up to 16 step motors
• Up to 256 microstep resolution
• Fully programmable ramps and speeds
• Two digital I/O and two fixed input channels
• Software selectable “Move” and “Hold” currents
• Hold current automatically selected upon move completion
• Up to 85 oz-in of holding torque