strange works without smart sensor

[lulu9149]

Hello
I removed the smart sensor not really finding the right code for my anycubic and well the plugin does not see anything or my raspebery cat all works and tells me that the filament is advancing while the smart sensor is disassembled? Strange

Thank

[RobeeeJay]

If the GPIO pins are not connected (floating) they could be picking up stray capacitance and triggering