Hello I previously had issues with 2 motor drivers, so I bought 2 new ones which solved my problem. https://forum.arduino.cc/t/cncjs-x-axis-z-axis-not-moving/905789
But today something funny happened with the Y-axis. All of a sudden one side of the Y-axis was not moving putting my Y-axis out of sync. Any idea what could have happened here? Video of issue( one moving but the other is not)
What happens if you swap the drives to the Y axis from one side or the other ? Does the problem follow the swap ?
@Professor_Joe, your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with your project 
See About the Installation & Troubleshooting category.
I just swapped the Y-axis motors with each other, someway it is now working. but now I have another problem. The X-axis seems to have a lot of clicking sounds from this G-code test to draw a circle. Test
G17 G20 G90 G94 G54
G0 Z0.25
X-0.5 Y0.
Z0.1
G01 Z0. F5.
G02 X0. Y0.5 I0.5 J0. F2.5
X0.5 Y0. I0. J-0.5
X0. Y-0.5 I-0.5 J0.
X-0.5 Y0. I0. J0.5
G01 Z0.1 F5.
G00 X0. Y0. Z0.25
Are you using toothed belts? A clicking sound might be a belt skipping. That could be the axis binding or the belt not tight enough.
Looks like your X stepper is missing steps. Either something is binding or the current setting on your driver is too low. Read up on how to set the current on your drivers.
Swapping the two Y drivers made things work again. Nice of course but.... for how long will it work, is my question.
Could You present a description and pictures of connectors, connections used? What kind of cables are feeding the steppers? Intermittent contact in certain places of the circuit might blow things up f ex inside a driver.
Help us to help you.
Provide more information about your CNC.
What engines are you using, (link).?
Which driver are you using?
What voltage from the source that powers the motors?
RV mineirin
Railroader
The stepper motors I bought came with 4 pin female connectors Stepper Motors I'm using A4988 drivers and I use a 12V 3A dc plug to power the engine.
I know very little about stepper motors but that does not sound enough current for 4 motors working at the same time. Can you measure the voltage with all 4 motors running ?
What voltage do you need me to measure? The V reference for motor drivers?
Start with the voltage being supplied by the "12V 3A dc plug" with all 4 motors running
Ok then how do measure this voltage when I run the 4 motors?
Run some G-code that moves the cutter from one corner of the bed to the diagonally opposite corner whilst lifting the cutter from just above the bed to its highest position. All 4 steppers will be running and taking current. Measure the output voltage during the run using a DVM
Before you ask, no, I do not have the G-code to do that
It's 12.32 to 12.54V
It sounds like the power supply is able to supply enough current to drive the motors but I would very carefully check all of your connections as it is worrying that swapping the 2 Y axis motors resolved the original problem
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