simple filament sensor switch

  • I need to make a simple microswitch runout sensor:

    It seems to be doable but light on details.

    1. I'm wondering how do I configure what happens when the switch is triggered? I'd like a basic pause, retract, and hotend cool.

    2. Also, It's a bit unclear how to tell duet how to know where the sensor is plugged into.

    #) Switch wiring: I'm assuming stop and ground, no need for the voltage. Right?

    My idea is to have a switch wired like A below.


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