Re: Nema 17 are not moving

run the ramps test firmware

check all the stepper driver input pins and voltages.
use -ve probe of meter on -ve plug on power supply (do not use --ve on d8,d9 or d10, they are special)

This is how the stepper module is wired on a ramps.



pick one stepper driver say X.and Check all these

Down left side.

Check enable pin is 0v
ms1, 2 and 3 can be ignored, they wont stop all movement. (sets microstepping)
reset and sleep pins check these are high
step should be pulsing between 0v and 5v
direction should be pulsing between 0v and 5v, but much slower than step

Down right side

Check vmot is 12v
check vmot gnd is 0v (and check it has continuity to gnd)
pins 2a,2b,1a,1b are complicated signals out to the stepper motors, ignore them for now.
Check vdd is 5v
check vdd gnd is 0v (and check it has continuity to gnd)


If all these are correct. you have dead stepper driver. If they aren't you need to look at your ramps.