i have some questions…i am trying to make cnc machine.i am using a stepper motor.there was no labeling on it.i mean nema 17,nema 14 ,nema 23 or what?..i think this is what i am using…
i am using arduino uno,cnc shild, 2 piece of A 4988 stepper driver,2 piece of stepper motor and a servo motor and 12 v 2 amp adapter.
The problem is after programming and setting up everything motor does not rotates.its just vibrating and giving a annoying sound.First i used 12v 500mA power source.then also motor does not rotated but the sound was little low.then i used 12v 1amp, same thing happened ,but now sound becomes higher.using 12v 2 amp same thing happened and the sound gets ultimate. but the most socking thing is dvd drive motor works perfectly with the same setup… i m fed up with this.
My question is A4988 stepper driver has max current 2 amps, so if i use 10 amp power source will it not harmful for the driver and motor?
i which value i should set the potentiometer to rotate my stepper?