MarlinFirmware/Marlin

[FR] Filament Change for DGUS / DWIN

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#18,713 opened on Jul 19, 2020

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C: LCD & ControllersT: Feature Requesthelp wanted

Description

Bug Description

Dear Marlin firmware developers, I have got troubles with my 3d printer with FYSETC S6 mainboard onboard connected to DGUS (DWIN Graphical Utility Software) LCD. Everything works like a charm, but filament change is not optimal. I would like to have option to extrude more filament after filament change, but unfotunately there is just possibility to terminate the change process. Is there any solution to solve such issue? Would you be so kind and could you advise me also with the screen (number and name), which should be optimal to serve such event, please? Thank you very much in advance. Kind regards, jopl.

My Configurations

FYSETC S6 DGUS (DWIN Graphical Utility Software) LCD

Config files are in zip attached

Steps to Reproduce

  1. Start print
  2. Filament change (M600 command via serial port)

Expected behavior: [What you expect to happen]

Marlin should wait for a) Filament change process termination confirmation and continue with printing or b) Extrude more filament choice to have clean material on output of extruder

Actual behavior: [What actually happens]

Marlin FW waits just for termination of filament change process and continues with printing, no etrude more option is available

Marlin_FYSETC_DGUS_cfgs.zip

Additional Information

  • Provide pictures or links to videos that clearly demonstrate the issue.
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Contributor guide

Tech stack
cpp
Domain
frontend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Marlin firmware developmentDGUS/DWIN LCD protocolC++ programmingfilament change M600 command
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate the current filament change implementation in Marlin, particularly in the DGUS LCD driver files (e.g., Marlin/src/lcd/dgus/). Understand the M600 command flow and how the LCD status screen is managed. Consider adding an option to extrude more filament before continuing, possibly by modifying the DGUS UI to include a button for additional extrusion. Check existing similar features for reference.