Question about magnet filament monitor

[Marco Bona]

I would like to add a filament presence switch about one meter away from the magnetic sensor, which is the distance from the coil to the extruder. Knowing the distance of the sensors, is it possible to create a function that stops printing at a certain distance from the activation of the runout sensor?
More simply explained:
-The runout sensor is activated
-Continue printing for another 800mm
-Pause printing

[dc42]

That's not supported by the firmware. Can you move the filament switch 800mm nearer the extruder?

[Marco Bona]

Hi @dc42 , will it be possible to implement it in the firmware in the future?
I am still in the planning stage and I want to understand if it was possible in the future to implement it.
I don't think I can get close to the runout sensor

[dc42]

I can add it to the firmware wishlist, but it won't have a high priority.

[Marco Bona]

@dc42 ,if you have desire and time to implement it I am in no hurry.
I continue planning for this route.
Thanks for the work you do !!

[zapta]

@Marco-Bona said in Question about magnet filament monitor:

-The runout sensor is activated
-Continue printing for another 800mm
-Pause printing

Not exactly what you are looking for but here somewhat similar scenarios that I believe are feasible

• Runout sensor activated
• Printing paused
• Pause script purges 800 of filament.

or

• Runout sensor activated and trigger a delay
• After X seconds the duet receives the sensor activated signal
• Printing paused

There is another solution that will delay by extrusion length rather than time but it's more complex. It's related to the stepper analyzer discussed somewhere else here, which can tracks in realtime the extrusion length.