Hello Snapmaker 2.0 users,
We’re collecting the issues you’ve encountered when using Vibration Compensation Firmware V2.3.1.
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@Jade
This photo may be difficult to make out, but there is significant defect in the top surface layer of the print on the right. This defect exists ONLY when the VC is turned ON, even after full tuning. Both parts are the exact same .gcode file, but the left part is with the VC off. The part on the right looks and feels like the lines’ widths have been heavily increased to the point of leaving gaps between the lines and are not following the slicer settings. I am still testing this to see if I can figure out exactly what is causing it, and will share a similar .gcode file that does the same thing, but I understand that when the VC is on it uses a significantly different linear advance; perhaps that has something to do with it?
I think it’s more dynamic and this could cause underextrusion like seen in your picture.
Is it really simply turned off left and turned on right with the same firmware? - Wondering about such a big affect in those short movements…
I have seen problematic hotend temperature behavior in the past when printing “too” fast, do you see any temperature drop while printing?
Well, I reverted back to non-VC firmware v1.20.3 to run a test print for troubleshooting, then re-installed VC firmware v2.3.1, and now I can’t get the problem to re-produce. The VC firmware also calibrated perfectly at the default freq setting (~59Hz) using both EI and MZV shapers, where before it calibrated at around 18. So I am inclined to believe that this may have just been a transient bug with the initial install. I can’t remember what exact process was the first time, but this time I know I made sure to power cycle the machine both after installing the firmware, and after turning on VC. Now printing with wall speed 100, travel speed 120, top surface speed 50, and accels 2k all-around, getting nearly perfect prints.
The only defects I see now are very slight pinholes at the edges of my top layers that I believe are caused by linear advance, since they are present when using 2k accel, but not at 1k. Is linear advance still user/slicer-adjustable when the VC firmware is installed and the VC is turned on?
