FreePrusa Mk3 indirect filament sensor for all filaments (transparent, black, shiny, whatever).
Thingiverse
18 model
FreeThingiverse
FreeThingiverse
Thingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse
Thingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse
FreeThingiverse