With a normal (sorry Keteland ) ramps system adjusting the driver current would be correct, but with the Leadshine driver I believe you will need to set the micro-step switches to correct this. If you could post a clear pic of the switch settings and tell us what positions you currently have your switches set at.

Monster printers are awesome, so you know what I think of this giant printer!!! Big high five!!!!!

 

I would also agree with Stargeezer and say step switches.

 

I am not a fan of ramps so I would spend a little more on the controls. For this build the planet cnc products are great because it is designed for external stepper drives in that pulse timing is adjustable in the software. I use leadshine drives and setup with this card was very straight forward. You are going to need a control system that is more flexible than others. Planet cnc is also very good at digitizing with a part probe which can get a handmade parts into a digital format for reproduction and unless you are very proficient with 3D software or have a high end scanner, getting artistic creations printable is challenging.

 

I ran into a very similar problem about 2 weeks ago except mine was only doing it on the z motors. I will mention it am in the middle of building my first 2 3d printers. But I ordered enough parts total to build 5 so I got 3 complete ramps kits in athe once. 1 out of 3 of the ramps boards ended up being bad but only the z motor connections were bad for some reason everything else worked fine except the z motors I tried a different ramps board with same exact configuration file and worked fine. Idk if this is same problem for you but put it up just in case. But please keep us updated I have been wanting to build a 3d printer to print concrete for about 2 years now. I would love to see it finished and possibly make one myself

 

If it's possible (do you have another ramps board on hand or able to obtain a second one just in case) try using another ramps board I am in no way saying that the ramps board is for sure the problem just saying that if you have a second one on hand or able to get a second one without worrying about spending the extra money in one. It would not hurt to cancel that out of possibly being the problem. Either way let us know what you end up figuring out and during my builds if I come across anything else that relates to your problem I will post it

 

How is your configuration h file set up? I'm surprised more people have not commented on this as I'm still very new. One of the other problems I ran into is I downloaded a pre-configured configuration h file and I couldn't get any movement out of any of my axis because something about the way he had the endstops set up. I managed to play with a standard configuration h file that I downloaded and just manually made adjustments little by little way more time consuming this way but this is the stage I'm still at but all my motors are moving properly now and I am ready to hook up heat bed.

 

The microstepping I haven't got to play with yet but will be at some point I do however know that this is also something that could cause the issue you are having based of some comments I have read from other people. When I first was having my issue a lot of people were saying that was my problem something to do with mi rostepping which ended up not being the issue but just trying to give you some possibilities to try. If it is a microstepping issue I can't offer any advice on that yet

 

What is the voltage you are supplying to the stepper motors?

 

Try swapping steppers. See if this stepper works in place of one that functions correctly. Then plug a stepper that is working ok in place of the one that's buzzing. If they work in these different locations, the problem is your driver or your mega board (unlikely), if not, it's the stepper.

 

Hey,

How is your build going ? Is it finished ? Any pictures of it (finished or not) ?

Thank you,
Jacques

 

i am building a similar size printer but mainly for plastic, its 4ft x 4ft x 4ft im using a printrboard rev d, also like to give you a high five
the commercial industry is a tad behind on making extremely large 3d printer platforms