[ahmed]

I have a question I hope someone can help me
I am currently building my CNC machine and I have actually started getting to the point of building The Driver I find a good driver in this site www.ifrance.com/mac1 and i build it for unipolar motor's i have 3 motor's 4.0v and 1.6A and i use power supply 6A and 24V and in the circuit say to put a resistor 5w .5ohm , can any one tell me how can i run the motor in the best mode how many voltage can i use and what about the resistor when i change it to 5w 5ohm the motor did't run and i cann't uderstand why

plz help me to run the motor in the best mode and what resistor i use to achive the max oz

thankes