Stepper Motor Hell (2 replies)

Hello everybody,

I am having a really hard time trying to make my stepper motors to work ...
What i am using:
- ramps 1.4
- A4988 stepper motor driver
- 200 steps motor (17HSR1006-25)
- marlin 1.0.2-1

I tried a lot of things ... Checking the motors wires, playing with the micro-stepping, the driver calibration, acceleration constant definition, the feedrate ... but I can't get a reliable and smooth movement.

Most of the time, all i am getting is this something like this type of "vibration" [vid.me] (slower or faster, depending of the feedrate I use with the 'move' command, stronger or weaker depending of the driver calibration).

Any idea, tips or link concerning this subject would be highly appreciated.