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 nuts
3 - M4 lock nuts (nylon insert)

NOTES
The encoder board comes with a 90 degree pin header on the top of the board. I removed it and replaced it with a straight pin header on the bottom of the board.

The hole on the left side is for the LED on the sensor board. Push a short peice of translucent fimament in as far as it will go. It will act like a fiber optic strand and enable you to the LED when the top is on.

The only part that may need supports is the bottom where the screws are re