Filler - Filament spool holder with integrated filament weight sensor

The filament holder with integrated electronic scale can determine the weight of the remaining filament for a 3D printer.

For use with the [5 Kg load cell and HX711 load cell amplifier](http://a.co/d/1JRexNN) that can interface with Arduino or Raspberry Pi. The electronics can be adapted from https://www.thingiverse.com/thing:1935177