Connects to the RS-232 serial port of a PC, laptop, or other host. This module is a complete stepper motor driver and intelligent controller built into one. Simple coordinate commands sent from the host will advance the motor to an exact position in the range of 0 to 16,777,215 using S-curve acceleration/deceleration slope profiles which reduce stall effects during ramping, and overrun effects during breaking. Host can also instruct the motor to accelerate to a target velocity and continue to move until a limit switch triggers the deceleration curve, or rotate continuously while the host controls the velocity on the fly. Ideal for use in cost sensitive, open-loop, precision motion control applications requiring a minimal user learning curve.