EVA 3 Toolhead filament sensor

This sensorplate will fit inbetween the drive and the universal front of the EVA 3 carriage. 
With ERCF a toolhead filament sensor is needed, this sensorplate works with ERCF.

Needed hardware: 

1) 1 M3 or M4 washer (polished without burrs) 
    The outer diameter should be between 7.8 and 8.8mm. Smaller M3 washers dont work.
    Thickness should be below 0.72mm
2) 1 or 2 6x3 neodym magnets
3) 5V M5 inductive sensor (sometimes the 10V sensors also work on 5V)
    (https://www.amazon.de/gp/product/B07CL3PP2K is working for me)

The M4 model is working reliable, make sure to cut the PTFE tube so that the washer doesnt touch the tube (just cut a small corner away).
 

15-Sep-22 I removed the unreliable M3 model for the small M3 washer
18-Sep-22 I added a model with a wider washer gap, additonal there is a M3 setscrew for the sensor. This is tested with a 0.6nozzle, so it should work on a 0.4 nozzle.

Before you print the whole thing, print it first upto 75% of the height. You can than test it and youll see where you have an issue. Printing parameters are crucial, make sure the washer can move freely and the filament can feed through. Printing in transparent ABS gives you an advantage while adjusting.

I connected the black wire of the sensor to PB6 of the Octopus 1.1

[filament_switch_sensor toolhead_Sensor]
switch_pin:^PB6
runout_gcode:
 M117 TH No Filament
insert_gcode:
 M117 TH Detected 
 

Make sure the washer moves freely in the slot!!!!!!

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