That was a very clear explanation. Thank you very much. When I told my tech service guy, that motor is moving hard, he suggest me to replace the motor. Ur video saved my time and money

Great explanation Dave! I struggled with all of those issues at some point or another when building my first CNC. This was probably the best and clearest explanation I have seen in quite a while. Thanks!!

Thank you, I found the problem after watching you.

Thank you sir, I couldn't figure out what was going on with my 3D printer extruder motor and your video helped me find the solution !

Very nice demonstration!

Thanks Dave, Thank you for this troubleshooting video.

Dave, is showing some good stuff in these video

Great trouble shooting video . I actually had an open coil connection at the terminal block. Should check all connections periodically.

Hey man God Bless you, I think that this is my issue, I will check tomorrow, but from what you show me I found it. Thank you so much !!!"""

thank you

I'm using an a4988 stepper motor driver to drive a stepper motor I salvaged from an old Epson printer scanner bed. I managed to get it working and moving in both directs with an arduino sketch. Then, after working on something else for a few days. When I tried again, it would only turn in one direction and was getting pretty hot. checked the wiring several times but it turned out to be the driver. I only found out because I changed the driver and it worked fine. Will have to do more homework on calibrating the motor I guess. Thanks for the tips.

What I needed. Thanks!

I'm curious what gauge wires you use to connect those external stepper drivers to the motors and the board. I have some Nema 17 motors and the wires that were provided seem extremely thin. In fact when I put a ferrule on the end of one if I don't double it over it will often pull out. It seems to me a slightly larger wire diameter might be a good idea. Your thoughts? Thanks. Subscribed.

I wonder if you could help me please. I have one of the Chinese 6040 routers, which is 3 year old now. It's started leaving lines across my carvings and on a big 500mm long carving it drops by about 2mm from one end to the other. I have checked and my bed is level. The Z motor also give a grumble like sound every now and then. I have checked the wiring and have found nothing as in bad connections. Do I need a new stepper motor do you think. Thank you for any help you can give, Terry

Thanks!

you. sir are sent by lord.

Okay, first of all, how do you move the motor using arrow keys?

HI, I have a symptom not mentioned here. When the driver is powered up, I am just getting a holding pulse, once every 1 second. What are the typical reasons where this may happen, when I am expecting the stepper motor to be held in place, awaying pulses. Thanks.

i have a similar problem but not sure if it is related to the stepper driver or motor. My "z" axis on my router is creeping downward. At first I thought it was something mechanical mainly because I did not note any change in DRO location. I checked all mechanical related possibilities. No problems. I then ran program and noticed that knob on top of motor was rotating significantly at a couple of positions in a cutting pattern of circle and plunging into workpiece; locations of movement were approximately 180 degrees apart. No input was given and DRO showed no downward movement. it is almost like a impulse was given via induction? However, there was significant tool chatter when it occurred. Not sure if chatter was the result of unwanted movement or the chatter preceded the movement. Any suggestions where to go from here.

Great job sir, thanks

this is really helpful thank you

My stepper motor moves to the right way normally but when it moves to left direction it gets stuck suddenly I hope you can help with this issue Thank you in advance

Nice, 👍,

I came upon your video because I am at my wits end. You seem to be knowledgeable, maybe you can offer me an idea. My X-ray machine has 3 stepper motors and one of them just vibrates and doesn’t spin. It buzzes also. The motor tests fine , I have 3 other spare motors and the same thing happens with them all. It is a 4 wire 2 phase motor. The board seems to be okay, also. The four pins connected to a different motor by switching the cable, works fine. That brings me to the wire. It seems like it has to be the wire, but how can it? There is continuity on each lead from one end to the other. It’s possible though the plug connectors aren’t contacting. One of the leads isn’t locked into the housing. It looks sort of like a DuPont coupling between the motor and wire. If one lead was not making contact, or was poorly contacting, would that give me the problem I am having? It’s a 40k machine that’s only 10 years old. The manufacturer doesn’t support it anymore, I can’t get another wire. I can try to make one, but the pancon 100 series connector going into the board is going to be hard to find. Right now I have no X-ray machine! Any thoughts would be awesome. Thank you. R

Great stuff, I have a different issue, I am running grbl 1.1f with nema 23 3Nm with the drivers DM542T, and my motors are unable to move unless I specify it to move more than 20 mm, I am running all of them at full steps, the current is properly setted, and when I run any g-code, it doesn't matters if I crated a g-code with a slow feed rate, it always moves way too fast, can anyone help me please?

No one else ever responds to this question i posted ,maybe you have an idea... my ender 5 has just started acting up with a strange issue which seems motherboard driver related... on one print it stopped approx one hour into printing...nozzle is fused to the print since heat to nozzle shuts off also...this happened 3 times printing this file which used to print fine...i probably have over 30 prints with success... so then i prints another file which is a bit less complex and printer has less effort i guess you could say... i can print these which take over 10 hours without a issue... i thought maybe stepper motors were getting to hot so i even setup a box fan which kept motors cool to the touch and it still stopped 50 minutes into the print... i have fixed everything on this machine over the past year ,but i am stumped.... i just ordered a new motherboard for it...Anyway what do you think issue is??? thanks

Hey Dave any experience with a motor refusing to change directions. My z will only go up not down. Goes up with pg up and with page down. Checked ping 6 an 7 and I can see the voltage change so i dont believe its the UC100/Mach3 setup. I am still on an old Xylotec. Plugged Z into my Rotary axis to that output nd it does the same thing .. Rotates both same direction with pageup/page down. I am blaming on the driver but I wonderer if you had some experience/recommendation.

My stepper setup stalled randomly as it was working fine making a loud noise then stopped working altogether. I changed the driver but somehow the driver green light doesn't even come on :((( I checked the voltage and it was 24V so it wasn't a power issue I feel. I powered up other devices so not sure what the hell is going on. I checked all the wiring. It's full on dead :(

i am facing the same problem had tried all the solutions changing wire combination, code, pins drivers but the motor is still sometime gives a beep only or rattles with beep and the strange thing is that motor is showing continuity in all four pairs, led blew up no matter what the wire combination is it show continuity on pairing 1,2 -1,3 -1,4 and so on for all. I had tried running motor directly with arduino without motor driver and it is running, but facing issue while it is connected to CNC shield with A4988 driver. I am using Arduino uno and motors are 4 pinned. Could you please tell me what I am doing wrong?

Hopefully someone can help me out. I have a motor that moves in two different speeds in different directions

It was be more educational if you could see your wire board wiring

Thanks!