Vcore 4 endless ringing
Hey guys I’m desperately trying to get rid of ringing. I have the 500mm vcore 4 hybrid and can’t get rid of ringing on my benchy. I have spend hours and hours tuning the belts and making sure everything is aligned, but something just doesn’t seem to work. I’m using prusament pla and have turned the speeds down to 2000mm/^2 external perimeters and 50mm/s outside walls. Btw this is only using the core xy kinematics, as I haven’t added the hybrid stuff yet. I also attached my input shaper graphs as well as belt tension graphs. I’m desperate so any advice is welcomed!!!
48 Replies
Did you actually put it into your printer cfg?
Yeah, here it is.
always use mzv
zv is not effective
oh really? thanks, let me try that
So that seemed to help, but still not anywhere near perfect. I printed a bench with the same filament on an old prusa mk3s+ I have laying around and it was wayyyy better quality.
I even tried using the ei shaper to try to be more dramatic, but still not much better
And these are the setting I have slowed the printer down to. I feel like this printer shouldn't be having this many ringing issues?
I'm wtill wondering if it uses it.
Can you share klipper log?
if you run internal perimeters much faster than internal, the artifacts from them can show outside as well. You are going to switch to hybrid anyway so there's not much sense in trying to tune corexy print quality. because there's a bunch of stuff that make the surface quality shitty that's not directly related to input shaping. eg. if PA is off it can manifest in similar way or magnify visible ringing.
in your place, i'd try to find a reason for that 100hz peak if possible. Then add the hybrid hardware and only then tune print quality.
So I took your advice and tuned tensions and added the hybrid stuff. The resonance graphs are here. If I slow eveything down a lot I can get decent results. But if my perimeters are anything over 100mm/s ish the ringing is awful. I also attached my printer.cfg. I set the max acceleration in the ratos.cfg to be 6400mms/^2. Is it possible that the config is just not using input shaping?
Here’s a benchy I just did
To test, I ran a ringing print "with" input shaper and with the input shaper commented out. The prints look basically the same. What am i missing? @miklschmidt is it possible that my input shaper isn't being used and its not working?
Your Y belts are overtightened and possibly not equal. Open the realtime analysis tool and create a macro called "Hybrid Y Belt Tension" with the following sequences
Sequence 1
gcode: MAYBE_HOME
recording off
Sequence 2
name: Right Y Belt
gcode:
Recording on, use toolhead adxl
Sequence 3
name: Left Y Belt
gcode:
Recording on, use toolhead adxl
Save that macro and run it from the resonance analysis tool front page.
I made it and tried to run it but I got these errors.
Is the configurator up to date?
And did you pick the right accelerometer to record with?
Yeah its up to date and i picked T0 which is right. It gives me the same error when I got Tools-> home printer
Same thing when I try to see the live accelerometer streaming
Please post you debug-zip (link in sidebar)
Wait, do you have beacon configured as your accelerometer on t0 ?
That won't work (yet). Use the EBB42 (select it in the hardware configurator, you don't need to save it to your config)
No im pretty sure im using the EBB42
yep, confirmed
This is very odd
klipper is reporting adxl errors
Hmm. Any suggestions?
no unless you're familiar with web development, i need to see the requests it's making
it's definitely requesting the wrong adxl
and i just tested the setup here, works fine. Can you double check the settings in the hardware configuration?
Yeah let me double check those settings
Btw you're getting temperature warnings on your X stepper driver
Also show me those macro sequences because it looks like the first sequence completes just fine
All setting looked right btw
Yeah this looks correct. But then what the heck is this:
Ah, you're testing the oscillator here it seems
Yeah I think I was trying different things to see if anything worked
I can't find anything related to that failure. Very odd. Will have to look more into this tomorrow, sorry!
in any case, it's prolly worth checking you driver cooling, it's complaining quite a lot
it's also reporting openload in some cases, suggesting a bad connection to the stepper.
This is not resonance btw, that's artifacts from a stepper acting wonky
same with the majority of this
Could actually all be down to that one driver struggling from a poor stepper cable connection
Hmm ok. I have everything stock and the fans are running. Maybe I need more fans? I can check that out
Is there a way to diagnose which stepper might have the bad connection?
No problem, thanks for your help!
i think it's just the cable having a loose connection
Does it say which stepper? I assume x because thats the one you said that got hot?
Ahhh now I see what you were saying
So after watching the log files, it seems that i get this overheating error randomly for other steppers too. I checked and know my conenctions are stable. Everything is securely in there. This is making me think there is a firmware issue maybe?
This is making me think there is a firmware issue maybe?No, this is reported directly from the drivers. The "OpenLoad" is a loose connection in the motor cable. Check the crimps Did you forget the driver duct in the electronics ompartment? And are you absolutely sure the fans are running (and running the right voltage)?
Ahhh the driver fan duct was not on
I can check all of the crimps. In fact let me redo them to organize the wires. I will let you know if this fixes it
What does is mean when it says TMC 'Stepper" reports GSTAT?
@miklschmidt Undid the belts, re-aligned everything. Also checked all connections. Here are the tension graphs before and after adding the hybrid. Still can't get the realtime analysis to work. Same error as before.
Internal driver error, see if a power cycle helps.
i'm sorry i haven't had the time to dig further into it, i still can't reproduce the problem on my end
No worries, thanks for the help. I think this last print I did was a lot better. Now just battling VFA's
So looks like I got it all fixed. For anyone in the same boat, I took off the hybrid belts and made their tensions perfect. Then added hybrid belts and tightened them super slowly. I only looked at the shaper graphs instead of the tension graphs. I guess I misunderstood that the tension graphs aren’t helpful for hybrid.
gorgeous result!
Excellent sleuthing, this looks great 👍
Very nice I'm kinda in the same boat
Did you get yours sorted out?
Nope not yet it's my first diy kit so it's a hella of a learning curve
Well best of luck, I can try to help if you have questions!