Included on the DCB-25 OEM stepper motor driver and controller board are a microprocessor, memory, serial command input, and 0.25A unipolar drivers. A 2A version is also available. The board uses a flexible phase-sequence generator and is designed for OEM applications using high-volume production linear actuators, rotary steppers, and solenoid or valve drivers. Built-in phase step sequences include full, half and wave drives.A custom user-sequence capability provides a means of sequencing eight states with up to four devices. There's also an instruction set of over 30 commands.