Standalone Filament Sensor (Battery)

I haven't found any good filament sensors that work independently, so I designed one with an AAA battery.

the picture with the components is the first version without screwing option, otherwise identical

3-12 V Piezo: https://www.amazon.de/dp/B09RFH1T8J?ref=ppx_yo2ov_dt_b_fed_asin_title

Limit Switch: https://www.amazon.de/dp/B07F9QKTQQ?ref=ppx_yo2ov_dt_b_fed_asin_title

Battery Contact AAA: https://www.amazon.de/dp/B00GN3PN46?ref=ppx_yo2ov_dt_b_fed_asin_title

13x13 mm toggle switch: https://www.amazon.de/dp/B00IIDY49E?ref=ppx_yo2ov_dt_b_fed_asin_title

Shrink Tubing

Jumper Wire: https://www.amazon.de/gp/product/B01EV70C78/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1