filament sensor 2 in 1 3D 打印模型

i made a 2 in 1 filament end sensor, it detects when the filament is cut and also when a knot is formed in the spool and prevents the spool from unwinding, the sensor also contains a led to inform the presence some thread .

for this i bought a limit switch on **********: https://fr.**********.com/item/1005003378482639.html?spm=a2g0o.productlist.0.0.224d4c51ezyeue&algo_pvid=5df4cd2c-59a5-4b12-bb92-807f44

i also recovered 2 magnets on geomag type rods (round diameter 5mm thickness 3mm)
i installed it on my ender 3 v2