Filament sensor using z-max endstop pin

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discojon
Posts: 431
Joined: Sat Mar 07, 2015 1:54 pm

Filament sensor using z-max endstop pin

Post by discojon » Sun Mar 04, 2018 10:43 am

I'm considering adding a mechanical filament run-out sensor to my toolhead. I'd like to use an existing pin that is unused (max endstops) as the trigger. I'm comfortable with editing the fw but haven't messed with pin configs. I'd appreciate some guidance on where to grab power (3.3v?) And how to reassign a pin to the filament sensor.
TAZ 5, Open rails X,Y,Z. Marlin 1.1 RC2. Mangrove dual fan, reinforced extruder mount

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