PaulS:
as i know the Enhanced 2A Stepper Motor Driver have Vmotor,GND,PULSE,DIR,EN,*Vin...so how i connect this pin to my arduino board??
The page you linked to has several downloads available. I'd think that #3 and #5 might prove especially useful.
i have already run the sample source code and it works well. but tutorial given only using UART connection is using serial monitor to move the stepper motor. my project have to use the lcd keypad shield to control the stepper motor speed. any other method how to connect arduino with enhanced 2A stepper motor driver?. XD