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prusa3d / Prusa-Firmware

Firmware for Original Prusa i3 3D printer by PrusaResearch
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[BUG]MK3S (fw3.13.0) with MMU2S (fw3.3.0): M403 causes filament choice #4352

Closed KeanWong closed 1 year ago

KeanWong commented 1 year ago

Printer type - MK3S Printer firmware version - 3.13.0

MMU upgrade - MMU2S MMU upgrade firmware version - 3.3.0

SD card or USB/Octoprint Tested on both, and by sending manually input terminal command via Octoprint

Describe the bug Sending M403 E0 F0 to the printer causes a filament choice operation to start. It should not (M403 is send 5 times at the start of a non-single print generated in PrusaSlicer, and T? should initiate a filament choice selection, not M403)

To Reproduce Let everything boot/reset. Send "M403 E0 F0" to the printer

Expected behavior Whatever the MMU does with M403 (I assume it is recalling timing settings that vary based on at the filament type?) should occur. It should NOT ask for a filament choice. Asking for a filament choice prevents the next T0 command from loading the first filament (in my example)

G-code ; Send the filament type to the MMU2.0 unit. ; E stands for extruder number, F stands for filament type (0: default; 1:flex; 2: PVA) ; M403 E0 F0 ; M403 E1 F0 ; M403 E2 F0 ; M403 E3 F0 ; M403 E4 F0

;go outside print area G1 Y-3 F1000 G1 Z0.4 F1000 ; select extruder T0

gbzh01 commented 1 year ago

Same issue here!

gudnimg commented 1 year ago

Please try out 3.13.2 RC1. I think it is very likely it solves your problem.

We found that G80 had an extrusion move in the firmware and could cause false FINDA runout event for some users.

The issue affects MK3S specifically.

https://github.com/prusa3d/Prusa-Firmware/releases/tag/v3.13.2-RC1

PxT commented 1 year ago

RC1 appears to have fixed the problem for me.

gbzh01 commented 1 year ago

Jep, it fixed it! Great job, Prusa team. I am working regularly again.

Best regards,

Gregor Buehrer
Director



Sputnique Creative GmbH Industriestrasse 44 8152 Glattbrugg Switzerland

+41 76 586 04 83 www.SPTNQ.com

Am 13.09.2023 um 01:47 schrieb PxT @.***>:

RC1 appears to have fixed the problem for me.

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