Electrical food grinder with electronically adjustable grind settings and tooless disassembly

A grinder has a toolessly attached ingredient hopper assembly overlying a toolessly attached fixed grinding burr defining the top of a grind chamber within which is received a mating rotary grinding burr that is slidably mounted to a rotary drive motor for adjustment relative to the fixed grinding burr. Adjustment is achieved automatically by control of a stepper motor that pushes on the end of an elongate member passing through a hollow rotary drive axle and carrying the rotary grinding burr at an opposite end. Start of a grinding cycle in response to actuation of a start switch is inhibited if a pair of photosensors do not detect location of a ground ingredient container in a correct position for receipt of the ground food ingredient, if an automatically closable hopper cover lid is not in a closed position or if grinding parameters, such as the fineness of the grind and the amount of ingredient to be ground has not been detected.