Connects to a PC or Laptop using our USB Cable or to any other host which incorporates an RS-232 serial port. Stack multiple cards together on the same port. Directly drives a unipolar stepper motor using precise positioning and tracking algorithms. Simple coordinates sent from the host will advance stepper motor to an exact position in the range of 0 to 16,777,215. Host can also instruct motor to move in either direction until a limit switch has been triggered, or use a basic single-step mode which is host incremental. S-curve acceleration/deceleration slope profiles are automatically generated and incorporated into any multiple step sequence, independent of host. Thus reducing stall conditions during acceleration, and overrun conditions during deceleration. Ideal for use in cost sensitive, open-loop, precision motion control applications requiring a minimal user learning cycle.