Optical filament runout sensor, hybrid, with PTFE guides

by dancem Aug 23, 2018
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The sensitivity is that with filament diameter a little above the Tolleranz already enough that the lever triggers quickly. To turn this off, I have eg. 2 pieces. Scaling Arduino Washer Z height down 1mm, placed between Part & Sensor Hardware.

My experience has been that these sensors are ambient light sensitive. have you considered a light blocking shroud over the sensor area? might add to accuracy.

In this case you don't need the precision. It is fully locked or not. After a few days of printing I can tell, that with a direct light source above the printer, I don't have any false alarms at all.

But good point, thank you, never thought about this before.