Closed Ohmarinus closed 4 years ago
@Ohmarinus is the issue still there?
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Bug Description
Raising the flowrate to 200% during a print causes the machine to vibrate heavily and make really loud noises, see the video here: https://www.youtube.com/watch?v=ZZZDV9c6sxI
My Configurations
Using Marlin 2.0.5.2 Marlin 2.0.5.2.zip
Steps to Reproduce
I'm building a pen plotter, DIY design, it was using strings and is now converted to belts so the pulley size increased and I increased the steps/mm from 36.57 to 100 which is the correct setting.
During the first test print I noticed the machine suddenly printed much slower than before (I thought this was weird, changing the pulley size and raising the steps/mm accordingly shouldn't slow down a print)
I raised the flow rate to test out how fast the machine could draw while maintaining dimensional accuracy and now have any ringing.
Expected behavior: I expected the printer to speed up linearly with the speed settings while maintaining silent operation like I am used to from the TMC2208 drivers.
Actual behavior: The machine did speed up, but not by 200% and it started making really bad noises (see video).
Additional Information
Here again is the video: https://www.youtube.com/watch?v=ZZZDV9c6sxI
What I did:
I hope anyone recognizes what's going on. This pen plotter was built to be fast so I am really curious to find out what could cause the problem. Is it raising flow rate that causes an issue? Or is there something else I'm overlooking?
In the end, despite the noises, the images come out perfectly so there are no artifacts visible of the noise that is generated in the line-art. However, I don't believe this can be good for the machine. It sounds as if it is destroying itself slowly.