How to determine if a filament is selected for a tool



  • Hi,

    I would like to write some conditional code based a filament selection having been loaded into a given tool.

    Is it possible?

    Thanks.

    Frederick



  • @fcwilt I also was looking for this, I figured it would be in the metadata somewhere but could not find it.
    My workaround solution was to have the user select a filament - then based on that selection, write a separate macro file, with the contents of gcode to be executed for that filament type.

    This is not what you were asking for, but it may give you an idea to conquer your objective. I made three macro files that work as a team, look at "Set Filament Type" macro:

    Filament Handling

    ; 0:/macros/Filament Handling
    ; Macro used for all filament handling evolutions
    
    if state.status != "processing"
    
       ; Printer is not currently printing!
    
       if sensors.filamentMonitors[0].filamentPresent = true
       
          M291 P"Press OK to begin filament UNLOADING, else press CANCEL to exit." R"Filament Handling" S3
          M291 P"Please wait while the nozzle is being heated." T5 ; Display message
          M98 P"0:/macros/Heat Nozzle"                     ; heat nozzle to predetermined temp
          M291 P"Ready for filament unloading. Gently pull filament and press OK." R"Filament Handling" S2
          M291 P"Retracting filament..." T5                ; Display another message
          G1 E-150 F5000                                   ; Retract filament
          M400                                             ; Wait for the moves to finish
          T0 M702                                          ; Select tool 0, set filament to NOT LOADED
          M104 S-273                                       ; turn off temperature
          M140 S-273                                       ; turn off heatbed
          M98 P"0:/macros/Filament Handling"; run again
    
       else
    
          M291 P"Press OK to begin filament LOADING, else press CANCEL to exit." R"Filament Handling" S3
          M291 P"Please wait while the nozzle is being heated." T5 ; Display message
          M98 P"0:/macros/Heat Nozzle"                     ; heat nozzle to predetermined temp
          M291 P"Ready for filament loading. Insert filament and press OK." R"Filament Handling" S2
          M291 P"Feeding filament..." T5                   ; Display new message
          G1 E150 F450                                     ; Feed 150mm of filament at 600mm/min
          G1 E20 F100                                      ; Feed 20mm of filament at 100mm/min
          G4 P1000                                         ; Wait one second
          G1 E-1 F1800                                     ; Retract 10mm of filament at 1800mm/min
          M400                                             ; Wait for moves to complete
          M98 P"0:/sys/filaset"                            ; set filament type and LOADED
          M400                                             ; Wait for moves to complete
          M104 S-273                                       ; turn off temperature
          M140 S-273                                       ; turn off heatbed
    
    else
    
       M291 P"Press OK to begin filament CHANGE, else press CANCEL to exit." R"Filament Handling" S3
       M98 P"0:/sys/filament-change.g" ; call filament-change.g
       M24
    

    Heat Nozzle

    ; 0:/macros/Heat Nozzle
    ; Macro used to heat hozzle to temperture set by "Set Filament Type" macro
    
    M291 R"Filament Handling" P"Heating nozzle for PETg, please wait." S0 T5
    T0 
    M109 S230                           ; set temp to 230c and wait                           
    

    Set Filament Type

    ; 0:/macros/Set Filament Type
    ; Macro used to set system's loaded filament type
     
    if sensors.filamentMonitors[0].filamentPresent = false ; if filament is loaded then reject action to change filament type
    
      M291 P"Press OK to change filament type, else press CANCEL to exit." R"Filament Handling" S3
    
      ; Set PLA temp
      M28 "0:/macros/Heat Nozzle"         ; Begin writing to SD card file
      M291 R"Filament Handling" P"Heating nozzle for PLA, please wait." S0 T5
      T0                                  ; Activate Hotend
      M109 S200                           ; set temp to 200c and wait
      M29                                 ; Stop writing to SD card
      
      M28 "0:/sys/filaset"                ; Begin writing to SD card file
      ; This gcode is used by Filament Handling Macro
      T0 M702                             ; Set system filament as UNLOADED
      T0 M701 S"PLA"                      ; Set system filament as PLA
      M29                                 ; Stop writing to SD card
    
      M291 S3 R"Filament Handling" P"Filament type currently set to PLA. Press cancel to save this selection or OK to proceed to next filament type."
      
      ; Set PETg temp
      M28 "0:/macros/Heat Nozzle"         ; Begin writing to SD card file
      M291 R"Filament Handling" P"Heating nozzle for PETg, please wait." S0 T5
      T0                                  ; Activate Hotend
      M109 S230                           ; set temp to 230c and wait
      M29                                 ; Stop writing to SD card
      
      M28 "0:/sys/filaset"                ; Begin writing to SD card file
      ; This gcode is used by Filament Handling Macro
      T0 M702                             ; Set system filament as UNLOADED
      T0 M701 S"PETG"                     ; Set system filament as PETG
      M29                                 ; Stop writing to SD card
    
      M291 S3 R"Filament Handling" P"Filament type currently set to PETg. Press cancel to save this selection or OK to proceed to next filament type."
    
      ; Set ABS temp
      M28 "0:/macros/Heat Nozzle"         ; Begin writing to SD card file
      M291 R"Filament Handling" P"Heating nozzle for ABS, please wait." S0 T5
      T0                                  ; Activate Hotend
      M109 S250                           ; set temp to 250c and wait
      M29                                 ; Stop writing to SD card
      
      M28 "0:/sys/filaset"                ; Begin writing to SD card file
      ; This gcode is used by Filament Handling Macro
      T0 M702                             ; Set system filament as UNLOADED
      T0 M701 S"ABS"                      ; Set system filament as ABS
      M29                                 ; Stop writing to SD card
    
      M291 S3 R"Filament Handling" P"Filament type currently set to ABS. Press cancel to save this selection or OK to proceed to next filament type."
    
      ; Set PC temp
      M28 "0:/macros/Heat Nozzle"         ; Begin writing to SD card file
      M291 R"Filament Handling" P"Heating nozzle for PC, please wait." S0 T5
      T0                                  ; Activate Hotend
      M109 S270                           ; set temp to 270c and wait
      M29                                 ; Stop writing to SD card
      
      M28 "0:/sys/filaset"                ; Begin writing to SD card file
      ; This gcode is used by Filament Handling Macro
      T0 M702                             ; Set system filament as UNLOADED
      T0 M701 S"PC"                       ; Set system filament as PC
      M29                                 ; Stop writing to SD card
    
      M291 S3 R"Filament Handling" P"Filament type currently set to PC. Press cancel to save this selection or OK to proceed to next filament type."
    
    else
    
     M291 S3 R"Filament Handling" P"Filament is currently loaded. Please unload filament before changing filament type."
    

  • Moderator

    I could be wrong, but I think the filament stuff is located within DWC only, so probably not in the object model.

    @chrishamm would have to give more detail.


  • administrators

    Does OM field move.extruders[n].filament have the information you are looking for?



  • @dc42 said in How to determine if a filament is selected for a tool:

    Does OM field move.extruders[n].filament have the information you are looking for?

    Yes that is what I was looking for. Just wasn't able to find it.

    Thanks much.

    Frederick



  • @dc42 said in How to determine if a filament is selected for a tool:

    move.extruders[n].filament

    @dc42, could you help me with the following please.

    This line works:

    echo "System filament currently set to: " ^ move.extruders[0].filament ^ "."
    

    This one, not so much:

    M291 P"System filament currently set to: " ^ move.extruders[0].filament ^ ". Press OK to change filament type, else press CANCEL to exit." R"Filament Handling" S3
    

    Cheers,
    Kolbi



  • This works:

    M291 P{move.extruders[0].filament} ^ " is currently set. Press OK to change filament type, else press CANCEL to exit." R"Filament Handling" S3
    

  • administrators

    That's almost correct. When you use an expression as the value of a parameter in a regular G- or M-code command, you must enclose it in { }. See https://duet3d.dozuki.com/Wiki/GCode_Meta_Commands#Section_Use_of_expressions_within_GCode_commands. So it should really be:

    M291 P{move.extruders[0].filament ^ " is currently set. Press OK to change filament type, else press CANCEL to exit."} R"Filament Handling" S3
    


  • @dc42 Thanks!


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