[BUG] zebra stipes with tmc drivers on cartesian

[iliya-malecki]

Description

with tmc2208 on skr1.3 im having a lot of zebra stipes, using cartesian kinematics. A friend has that problem too on cartesian, and doesnt have it on coreXY, with exact same settings.

Steps to Reproduce

im using bigtreetech tmc2208 v3.0, gonna attach the config files. Cant get rid of them lines, so it is rather easy to reproduce with any settings)))

1. all microstepping modes give this result
2. adaptive step smoothing and s-curve doesnt help
3. square wave stepping makes it worse

Additional Information

config.zip

[gloomyandy]

See this thread for an investigation into what looks like the same thing on a Prusa-i3-Mk3.

https://forum.prusaprinters.org/forum/original-prusa-i3-mk3s-mk3-user-mods-octoprint-enclosures-nozzles-.../stepper-motor-upgrades-to-eliminate-vfa-s-vertical-fine-artifacts/

[iliya-malecki]

but tmc 2208 should give much more uniform current than other cheapeys like drv. Other 2208 give way less vfa than mine, so I am clearly doing something wrong with my firmware

[gloomyandy]

I don't think you are. Read the above thread, it varies from system to system. One thing is that the smoother your rails and other movements are the more you can see the vfa. Other faults can mask them.

[iliya-malecki]

I didnt change anything in my kinematics when I changed from cheap drivers to tmc2208, and the problem escalated only with new drivers

[gloomyandy]

So was the only thing you changed the drivers or did you also change the control board and the version of Marlin you use? If you really want to investigate what is going on you probably need to try "cheap drivers" on the same board and version of Marlin.

[iliya-malecki]

ye probably I should buy some of them a4988

[DerAndere1]

Did you try PID tuning? I heard it helped in another issue that was concerned with wave patterns. This fix was found by Gerald A. in the marlin facebook group: https://www.facebook.com/groups/1049718498464482/search/?query=heating%20cycles&epa=SEARCH_BOX

[boelle]

@IliyaMalecki tried what @DerAndere1 suggested?

[iliya-malecki]

@boelle it didnt help much, the problem is not connected with extrusion itself

[boelle]

have you checked that belts and pulleys are ok? loose screws etc?

are you trying to print faster than the printer can handle?

[iliya-malecki]

@boelle everything is checked and working properly. Still having problems

[boelle]

could you try and attach the model you printed? i will then try and print and see if i get the same result

[iliya-malecki]

okay, thank you

[boelle]

you forgot to attach the model

[iliya-malecki]

gonna attach it later, I'm a bit busy right now

[boelle]

still busy?

[iliya-malecki]

I'm solving it right now by installing new skr 1.3 and reprinting test models I'm gonna send you. And i fell for the trick, nice job

[boelle]

could be nice if you also attach the stl file, you might need to make a zip file

or is the test model from thingiverse?

[iliya-malecki]

zebra.zip

didnt find the stl, i have been using this test for some time, and the original vanished somewhere.

[iliya-malecki]

and these are my results

[boelle]

seems to be less that the white print

[iliya-malecki]

only thing changed is the board - except visuals of the plastic, of course, white pla shows the problem more

[boelle]

Lack of Activity This issue is being closed due to lack of activity. If you have solved the issue, please let us know how you solved it. If you haven't, please tell us what else you've tried in the meantime, and possibly this issue will be reopened.

[github-actions[bot]]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.