Automate Nevermore activation by Material

[Geul]

Hello,

I'm quite new to this Forum, but have a Voron for some time.
The 2.4 350 is equipped with a nevermore v6 and I want to automate the activation whenever I print with ABS.
I use OrcaSlicer for my projects. There is a Variable inside the G-Code for material, but I don't get it, how to find it in Klipper.

Can you help me with some Videos or post to learn this kind of scripting?

Thanks

 

[claudermilk]

I do exactly that in my printer setup. There's two parts I have cobbled together: a bit in print_start and a separate macro it calls. I am triggering off desired chamber temp.
PRINT_START bit that takes chamber temperature as a parameter passed by the slicer. SuperSlicer & Orca have that as a field in the filament definition.

## Do heatsoak
    {% if printer["temperature_fan chamber"].temperature < chambertemp %}
          _HEATSOAK TEMP={bedtemp} MOVE=1                        # Set up to heat soak if chamber temp is set higher than current reading
      M190 S{bedtemp}                                        # Set target bed temp & wait for it
      TEMPERATURE_WAIT SENSOR="temperature_fan chamber" MINIMUM={chambertemp}   # Do the actual heat soak wait, until chamber temp is at target
        {% else %}
            {% if printer.heater_bed.temperature < (bedtemp-2) %}
        _HEATSOAK TEMP={bedtemp} MOVE=1                                    # Bed is below target temp, get it heating & safely park toolhead
        M190 S{bedtemp}                                     # Set bed target temp & wait for it
            {% else %}
                _HEATSOAK TEMP={bedtemp} MOVE=0                     # Just do a bed heat, no champer temp (open case for PLA)
            {% endif %}
        {% endif %}

Then the heatsoak macro:

[gcode_macro _HEATSOAK]
description: Helper: Set up to heat soak printer. Usage: _HEATSOAK [TEMP=temp(110)] [MOVE=move(1)]
gcode:
  {% set temp = params.TEMP|default(110)|int %}
  {% set move = params.MOVE|default(1)|int %}
    
    LED_HEATING
  RESPOND MSG="Warming up"
    M141 S0                                                 # Turn off exhaust fan
    M140 S{temp}                                            # Heat the bed
  M104 S150                                               # Set hotend to no-ooze temp & for Tap warm probing
    {% if temp >= 100 %}                                    # It's ABS or other high-temp plastic, closed case
        M106 S205                                             # Turn on part fan to 80% for
        SET_FAN_SPEED FAN=nevermore_fan SPEED=1                   # Turn on Nevermore fans to circulate & accelerate chamber soak
    {% else %}
    M106 S0                                               # Turn off part fan. Open case, no need
        SET_FAN_SPEED FAN=nevermore_fan SPEED=0                   # Make sure Nevermore is off
    {% endif %}

    {% if move == 1 %}
        _CG28                                                 # Conditional home
        PARK P=bed                                            # Park toolhead in safe location (center volume)
        LED_HEATING
    {% endif %}

 

[Geul]

I do exactly that in my printer setup. There's two parts I have cobbled together: a bit in print_start and a separate macro it calls. I am triggering off desired chamber temp.
PRINT_START bit that takes chamber temperature as a parameter passed by the slicer. SuperSlicer & Orca have that as a field in the filament definition.

## Do heatsoak
    {% if printer["temperature_fan chamber"].temperature < chambertemp %}
          _HEATSOAK TEMP={bedtemp} MOVE=1                        # Set up to heat soak if chamber temp is set higher than current reading
      M190 S{bedtemp}                                        # Set target bed temp & wait for it
      TEMPERATURE_WAIT SENSOR="temperature_fan chamber" MINIMUM={chambertemp}   # Do the actual heat soak wait, until chamber temp is at target
        {% else %}
            {% if printer.heater_bed.temperature < (bedtemp-2) %}
        _HEATSOAK TEMP={bedtemp} MOVE=1                                    # Bed is below target temp, get it heating & safely park toolhead
        M190 S{bedtemp}                                     # Set bed target temp & wait for it
            {% else %}
                _HEATSOAK TEMP={bedtemp} MOVE=0                     # Just do a bed heat, no champer temp (open case for PLA)
            {% endif %}
        {% endif %}

Then the heatsoak macro:

[gcode_macro _HEATSOAK]
description: Helper: Set up to heat soak printer. Usage: _HEATSOAK [TEMP=temp(110)] [MOVE=move(1)]
gcode:
  {% set temp = params.TEMP|default(110)|int %}
  {% set move = params.MOVE|default(1)|int %}
   
    LED_HEATING
  RESPOND MSG="Warming up"
    M141 S0                                                 # Turn off exhaust fan
    M140 S{temp}                                            # Heat the bed
  M104 S150                                               # Set hotend to no-ooze temp & for Tap warm probing
    {% if temp >= 100 %}                                    # It's ABS or other high-temp plastic, closed case
        M106 S205                                             # Turn on part fan to 80% for
        SET_FAN_SPEED FAN=nevermore_fan SPEED=1                   # Turn on Nevermore fans to circulate & accelerate chamber soak
    {% else %}
    M106 S0                                               # Turn off part fan. Open case, no need
        SET_FAN_SPEED FAN=nevermore_fan SPEED=0                   # Make sure Nevermore is off
    {% endif %}

    {% if move == 1 %}
        _CG28                                                 # Conditional home
        PARK P=bed                                            # Park toolhead in safe location (center volume)
        LED_HEATING
    {% endif %}

Oh ok cool, that's a good idea. I think I'll do it that way too.
I was initially planning to control the whole thing via the Gcode and the variable "; filament_type = PLA".
Is there a way to extract this or other information from the Gcode file?

 

[claudermilk]

Which? The filament type? I have that as part of the file name from the slicer. As you can see from the code, I use the chamber temp as my trigger and that's sent as a parameter to the print_start and print_end macros from the slicer.