Filament sensor rod
thingiverse
I made this one for my Voxelab Aquila. It should work in Ender-3 as well, I guess. You need a couple of M3 x 20mm bolt and nut . I purchased very cheap Filament detect sensor in AliExpress. This is the mounting rod for that sensor parts. Voxelab Aquila has a connector for sensor parts but the pin assign of this parts is opposite. I had to swap the white line and red line. ( black line is common ground ). I am using my Aquila with direct extruder unit so i make the spool holder 90 degree by another parts. https://www.thingiverse.com/thing:5305150
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