I am using an easy driver to run a Nema 17 stepper motor. The easy driver is connected to an arduino and supplied by a 12v and 750mA power as recommended.
At first, the motor run great when I ran a code. Then a few days later, whenever I try to run the code with the same set up as before, all the motor does is vibrate as if it is trying to move but are not getting enough power to do so.
Why did they run before and not now. Any opinion is appreciated.
check the wiring, the grounds.
check the ramp speed.