search

johncarlson21 / SV04-Marlin-2.1.x

Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. | Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.
http://marlinfw.org
GNU General Public License v3.0
21 stars 7 forks source link

[BUG] ???2 of 4 SVO4 printers stutter/dot filament in arcs of first layer #30

Open Kaffiend2 opened 1 year ago

Kaffiend2 commented 1 year ago

Did you test the latest bugfix-2.1.x code?

Yes, and the problem still exists.

Bug Description

I have loaded machine firmware V2.1.3.1b3 along with screen firmware 1.2.7 on 4 different SVO4 printers. On 2 of them they are printing flawlessly. On the other 2 machines anytime a arc/curve is printed the head seems to stutter. So on straight lines it prints as it should but when it gets to an arc head stops puts down a dot of filament, it moves a tiny bit spits a dot of filament, moves a little more then another dot until the end of the arc then goes to full speed normal printing again when it gets to straight line. This only happens on the first layer. All subsequent layers print as normal even in the curves. On one of the two printers i was able to get rid of the majority of the stuttering/dotting by dropping the initial layer speed to 10mm or less. I have reflashed firmware on both machines multiple times which has not helped. On the 2nd stuttering machine after a reflash but before recalibrating I ran a print and it ran perfectly fine in the air above the plate, but again after creating the bed mesh and calibrating everything else it went back to stuttering. Do you have any suggestions on what to try next? Could this be just a case of bad silicone lottery and the printers processing speed cannot handle the extra calibration needed for the 7x7 bed mesh? Or can the bed mesh code be optimized so it is not as taxing on the processor?

Bug Timeline

About 2 months

Expected behavior

I expected printer to print a smooth arc.

Actual behavior

printer stuttered while printing arc with dots of filament

Steps to Reproduce

first flash firmware second calibrate machine and bed mesh run a print with arcs with initial layer speed faster than 10mm

Version of Marlin Firmware

V2.1.3.1b3

Printer model

Sovol SVO4

Electronics

Stock

Add-ons

No response

Bed Leveling

None

Your Slicer

Cura

Host Software

Cura

Don't forget to include

Additional information & file uploads

No response

LostBrownie33 commented 6 months ago

Has there been any update to this issue? Experiencing the same issue, although mine also dots on random straight lines as well. Wondering if it is just a memory issue as you mentioned.