Could Duet2 cause this? CoreXY skew.
GeorgeM last edited by Phaedrux
I built this coreXY printer about 1 1/2 years ago.
It has been working well. Recently I added a Duex2 to the system. ( this will become pertinent a little later)
So I have Duet2 wifi 1.04
Very recently (I THINK since I tried to add the Duex) it has started to printed very skewed. (see pic).
The duex I installed had a bad driver5 it was determined. It produced a "driver5 has overheated. And eventually it would shut down". Part of the diagnoses I did was to connect my X axis to the driver5. Obviously it did not work. Motor would not turn. I've since removed the duex from my system.
Now I am not saying that hooking the motor to the driver damaged the motor. I don't know that. I do know that the time frame is about right.
What happens is that when the program calls for an X- to X+ motion, the X axis creeps forward, and when it calls for X+ to X- motion it creeps backward.
The first thing people suggest on a corexy system is to check the belts and I do have new belts and idlers on order. I do have another motor I can swap out but it is a real pain to do so, so I thought I would ask here if there is anything in the duet that could be causing this?
I have had to add this line to my config to somewhat correct the skew:
M556 S100 X4.5 Y0 Z0 ; adjust for obtuse XY angle
Thanks for looking
mrehorstdmd last edited by
Are the X and Y axes - i.e the guide rails- square? Belt tension is what squares the rails. In most designs, the belts should be pretty close to equal tension when the X and Y axes are square.
Save yourself some trouble and expense- motors almost never go bad, and when they do the smell is unmistakeable.
Are you using steel core belts? They are usually white...
Hinotori last edited by
In the following page http://reprapltd.com/reprappro/documentation/commissioning-introduction/calibration-duet/index.html see the section "Orthogonal Axis Compensation", it work for me. I have the same problem in my first build of CoreXY.
GeorgeM last edited by
Boy do I feel STUPID!!!! I was doing some calibrations last week (new filament) and forgot that I can't adjust x an y steps like in a cartesian printer. Went back and used same steps for both motors and now all is fine. It's amazing what pops into your head when it's 3 in the morning and you can't sleep!
bot last edited by
GeorgeM last edited by