Does any one Use the Alegro A4988 stepper drivers,and are there any problems. I have a small cnc that uses a dremal tool for the spindle,and uses the nema 17 stepper motors.The current is at about 1.5 amps. right now I have them on gecko drivers and a breakout board. I want to use the gecko drivers on another larger machine because the current capacity of these geckos will handle about 6 amps or more.I dont need that much power for these small of steppers,(have them throttled back to about 1 amp).can order 5 each from china at about 6.00 free shipping.Again Has any one used these and have you had any problems.Or what other low cost drivers would you use with better results...THanks very much...............