Galileo2 extruder filament sensor using MK3S+ IR optical sensor

What is Galileo2 :

it's a open source extruder

https://github.com/JaredC01/Galileo2

What is a PRUSA MK3S+ IR filament sensor?

What is MK3S+ IR filament sensor? you can get one from your old retired MK3S+ printer, or buy one for about $6, 7, 8 .... we only need the PCB,  no need long magnet and steel ball.

This project is to add a filament sensor to the galileo2 extruder.

two top holes add on top of the galileo part to mount the sensor

galileo2's arm is modified to add space for the sensor too.

BOM

• MK3S+ IR filament sensor and a M2 tapping screw

• M2.5 heat insert, L3.5, OD 3.5   4 pcs.

• M2.5 6mm screws X 4

• M2 tapping screw

• Magnet  round size dia 4mm X 2mm thick

• ECAS filament tube fitting

• short PTEF tube

Assemble

filament sensor:

add ECAS ptfe tube fitting to top part.

add 2 M2.5 heat insert (L3.5 OD 3.5) to HGX adapter

add 2 M2.5 heat insert (L3.5 OD 3.5) to base part.

use black marker pen to make mover part tip all black so it should block the light better.

cut a small piece of PTFE tube and put inside base part.

put 4X2 round magnet in mover part and base part, make sure they repel each other.

put top part to base part, use M2.5 scrwe to secure the filament sensor.

use 2  M2.5 6mm screw to secure the sensor on the top of the Galileo2 part.

related:

for stealthburner  :  https://www.printables.com/model/1471525-voron-stealthburner-entrance-filament-sensor-using

 for HGX extruder :