Filament Jam/Out sensor Rotary Encoder

This is my new filament sensor

Build List:

HC-020K Photoelectric Encoder kit
https://www.aliexpress.com/item/2SET-HC-020K-Double-Speed-Measuring-Module-to-Test-Motor-s-Rotational-Speed-with-Photoelectric-Encoders/32922214503.html

2 - 1.5mm Deep Metal V Groove Guide Pulley/Bearing 4*13*6mm
https://www.amazon.com/gp/product/B012KKTBRU

2 - 624ZZ Bearing 4*13*5mm
https://www.amazon.com/gp/product/B07FW4TXZG

1 - Extruder drive gear

1 - M4 x 30 screw
2 - M4 x 20 screw
2 - M4 nut