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prusa3d / Prusa-Firmware

Firmware for Original Prusa i3 3D printer by PrusaResearch
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MMU2S FW 3.0.1 TMC driver error #4564

Closed duebelpapst closed 8 months ago

duebelpapst commented 8 months ago

Printer type - MK3 w/ upgrade Kit to MK3S Printer firmware version - 3.13.2

MMU upgrade - MMU2S MMU upgrade firmware version - 3.0.1

SD card or USB/Octoprint I print via SD card

Describe the bug Since I updated my MK3S to 3.13.2 and the MMU2S to 3.0.1, I get an error message from the MMU almost every time I print. Usually only at the end of the print, but sometimes during the print while the print is still running. These are always prints with only one filament. The error message is "TMC driver error prusa.io/04321 FI:1 FS:0" In my opinion, all steppers of the MMU move at twice the speed since the update, can it be related to this? I have found an already closed bug report (#4503), according to which the problem should be solved. How is this supposed to work if there are no new FW versions?

To Reproduce It happens to almost every print and gcode

Expected behavior A clear and concise description of what you expected to happen.

G-code G-code file is not accepted for upload, how can I upload the code.

Video 20240109_211846

3d-gussner commented 8 months ago

@duebelpapst Thanks for the report, sorry to hear that you have that issue quite often. As you can see in the prusa.io/04321 article the MMU3 PD board stabilizes the power to the MMU controller board. The new firmware "monitors" the MMU and also TMC drivers way better than the "old" MMU2 firmware.

Please consider to upgrade to the MMU3 as this will improve the MMU significantly.

duebelpapst commented 8 months ago

@duebelpapst Thanks for the report, sorry to hear that you have that issue quite often. As you can see in the prusa.io/04321 article the MMU3 PD board stabilizes the power to the MMU controller board. The new firmware "monitors" the MMU and also TMC drivers way better than the "old" MMU2 firmware.

  • Which PSU do you have Silver or Black it is silver
  • Which Voltage are shown on LCD Support -> Voltages 23,9V / 23,9V / 5,0V

  • Please check your cables and the pins from the EINSY P3 connector to MMU controller

    • "Bad/Loose" connections can cause additional issues. all good

Please consider to upgrade to the MMU3 as this will improve the MMU significantly.

Well, you make a questionable firmware update and I have to spend 150-250€ to get it working again, I don't find that very funny.

Could it be that your software people have set the current of the MMU motors higher, that would also explain why the error occurs without moving the motors, because they also need current to keep the motors in position. Is it not possible to change this again, or at least make it adjustable via software? I also had error #04306, which is also an error that was supposedly caused by the power supply. Before the update I didn't have a single error message in 4 years.

I have now increased the voltage on the power supply from 23.9V to 24.5V. The 5.0V has remained at 5.0V.

Regards, Stefan

duebelpapst commented 8 months ago

Hello Hello everyone,

it seems that the solution was simply to adjust the voltage on the power supply from 23.9V to 24.5V, since then the MMU2S has been working perfectly.

Regards, Stefan

3d-gussner commented 8 months ago

Hello Hello everyone,

it seems that the solution was simply to adjust the voltage on the power supply from 23.9V to 24.5V, since then the MMU2S has been working perfectly.

Regards, Stefan

Glad to hear you got it working. Please consider to close this issue as users still can find it even it is closed.