I think I've read most of the threads with the similar issues and I've tried the recommendations proposed without luck
I got a CR10s PRO, and soon I added a Bondtech DDX kit and upgraded the board to an SKR 1.4T with TMC2209 drivers. Everything went OK, printed perfectly callibrated XYZ cubes, but as as soon as I printed models with curves I saw blobs. Lots of them. Reducing the temperature did not solve anything, but printing from the SD did... so after checking the logs and seeing some timeouts while printing (suspiciously a similar number to the blobs in the surface), the issue should be on the communications between Octoprint and the firmware.
What is the problem?
Blobs because the nozzle does some imperceptible stops at some points when printing from Octoprint
In the image you can see part of the body of a benchy (scaled 200% and then cutting to have a 3mm tall part), 0.2mm layer height, 3 perimeters, 0 infill. Using PrusaSlicer.
Checking the resulting GCODE after using the ArcWelder plugin, there isn't seem to be any weird movements around those points
What did you already try to solve it?
Used the ArcWelder plugin. This is the only thing that made a significant improvement.
Played with temperature and speeds. Nothing.
Upgraded from a Raspberry 3 B+ to a Raspberry 4 4Gb. Using an Aukey 5V3A power supply, so I haven't seen any throttling
Bought a shielded cable manufactured with 2 ferrite cores. Also, added tape to the 5V pin per Put tape on the 5V pin - Why and how
Disconnected the camera
Increased the Marlin parameters MAX_CMD_SIZE and TX_BUFFER_SIZE to 128. You can see my marlin config files here: https://github.com/diegomarino/Marlin/blob/42edebb1357c22967a30499fc9214d02af4ce2ec/Marlin/Configuration.h and https://github.com/diegomarino/Marlin/blob/42edebb1357c22967a30499fc9214d02af4ce2ec/Marlin/Configuration_adv.h
Have you tried running in safe mode? Did running in safe mode solve the problem?
Yes. No effect at all.
Additional information about your setup
- OctoPrint 1.5.2
- Python 2.7.16
- OctoPi 0.17.0
- PrusaSlicer 2.3.0.-rc2
- Raspberry Pi 4 Model B Rev 1.2
I don't know what else I should try from here.