Short hopper for Qumar grinder.
The bottom outer diameter of the hopper is 68mm.
Coffe bean reservoir.
Hopper for Quamar M80.
I wrote an alternative firmware for Quamar M80 and board with ATMEGA8
https://create.arduino.cc/editor/tyfoza/0c3f82d3-bbeb-4334-a6a9-473406b693ea/preview