Hey guys, let me start saying that I'm a total newbie in electronics and CNC machines. I'm building a CNC laser cutter. I'm using Chinese components: Cloudray Ruida RDC6442S controller Leadshine microstep driver DM542 Switch Power Supply LRS-75-24 (24V) RDWorks V8 As well as OpenBuilds parts: Stepper motors NEMA 17 Micro limit switches I'm practically building the CNC based on youtube videos, specially this one, where he explains the electronics. I have two drivers DM542 one for axis X and the other one for axis Y, which I intend to have two stepper motors connected in opposite direction. So I tried the exact same connection that he does in the video (switching letter with the same sign): A + |--------| B + A - |--------| B - B + |--------| A + B - |--------| A - Note: I also tried switching signs instead of letters. I tried different PA settings, the last one that has worked better than the others is: SW1 off SW2 off SW3 on (2.37A) SW4 (half current) SW5 off SW6 off SW7 on SW8 on (1600 pulse/rev) But still, it doesn't work as expected. You can watch the videos with different views, where you can see how at some point the left side motor starts to vibrate and the right side motor moves smoothly. Here are some photos where you can see how I wired the drivers and motors. I have tried multiple settings and always there is the motor that doesn't work as expected, I even switched the motors just to make sure they worked. I don't know what else I can do, I'm thinking it's a problem of calculations that I don't know of...but I'm hoping it's something simple but for my lack of experience and knowledge I'm not able to determine what's the problem, I hope one of you guys can give me an idea of what's happening and what else I could try.