Filament sensor mount Flsun
thingiverse
Modified version having a much smaller size but building on the same idea of having the sensor right above the extruder entrance place. Just buy a 10 dollar sensor and connect it to the e wm_det port on the flsun board. I needed to buy a 3-pin jst sm extension cable because the cable was too short. Also a zip tie is needed for connecting the sensor. And last but not least either use klipper (Google cobrapi klipper qq-s) or foxies marlin version. In the install you will find how to enable the sensor.
With this file you will be able to print Filament sensor mount Flsun with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Filament sensor mount Flsun.