How to determine if a filament is selected for a tool

[fcwilt]

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

[Kolbi]

@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."

[Phaedrux]

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.

[dc42]

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

[fcwilt]

@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

[Kolbi]

@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

[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

[dc42]

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

[Kolbi]

@dc42 Thanks!